Total pp cross section measurements at 2, 7, 8 and 57 TeV
|
|
- Susanna Clark
- 5 years ago
- Views:
Transcription
1 Total pp cross section measurements at 2, 7, 8 and 57 TeV A) One (out of several) theoretical framework B) Topologies of events in σ tot C) Direct measurement of σ inel : 1) cosmic-ray experiments 2) collider experiments D) The art of elastic scattering E ) Results: σ Tot, σ SD, σ DD F ) Implication of the new results LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 1
2 Let s set the scale The total cross section is dominated by soft processes mb If you were to eliminate every process below the first line (even the Higgs, the first AND the second one..!) the value of the total cross section would be the same If R 1 = R 2 = cm (one fermi)! σ ~ cm 2 = 100 mb LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 2
3 Scattering of composite particles The cross section between composite particles has a much more complex dependence from the center-of-mass energy, and it s not calculable. Let s consider a proton. It contains: - valence quarks - sea quarks - gluons These define the particle to be a proton Mostly SU(3) color symmetric, common to protons and anti-protons (almost true..) What part is controlling the total cross section? LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 3
4 pp vs pbarp cross section At low energy σ is different: valence quarks need to be important here At high energy σ is the same: only sea quarks and gluons can contribute LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 4
5 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 5
6 Theoretical framework: Regge Theory Regge Theory, and derivations, is the language used to describe the total cross sections of hadron-hadron scattering. The value of the total cross section depends on the exchanges of many particles. 1) Particles, when plotted in the mass (t) - spin plane, form lines, called trajectories. 2) You cannot exchange a single particle, you exchange all the particles on the trajectory. p Plot of spins of families of particles against their squared masses: α(t) α t Intercept p? Trajectory exchange The function α(t) is called a Regge trajectory LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 6
7 Contribution of each trajectory to σ All known particles lie on trajectories such as: α(t) α + α t Each trajectory contributes to σ according to: σ TOT (s) = Im A(s,t = 0) = s α 1 And therefore the prediction for the total cross section is: α smaller than 1!! So, it should decrease with s. However. σ TOT (s) = s α(0) 1 = s -1/2 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 7
8 Overview of hadronic cross sections pp πp pk pn The cross section is raising at high energy: every process requires a trajectory with LISHEP the same 18 March positive 2013 exponent: s 0.08 N...something Cartiglia, INFN Turin. is clearly missing 8
9 The advent of the Pomeron Intercept larger than one! A trajectory without known particles Intercept larger than one V. Gribov introduced, within Regge theory, a vacuum pole (Pomeron with α(0) ~ 1.1) in order to have a constant (or rising) total cross section. 9 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 9
10 The problem with the Pomeron trajectory The exchanged particles (poles) on Reggeon an pion trajectories offer guidance on how to write the scattering amplitude A(s) There is little spectroscopic guidance from the pomeron trajectory, as it has no particles. Pomerons exchange contribute as: σ TOT (s) = Im A(s,t = 0) ~ s ε (simple pole) σ TOT (s) = Im A(s,t = 0) ~ ln(s) (double pole) σ TOT (s) = Im A(s,t = 0) ~ ln 2 (s) (triple pole) The COMPETE collaboration has scanned a large selection of models compared with all available experimental data points and has produced a comprehensive set of predictions. σ COMPETE tot (7 TeV) = 98 ± 5 mb σ COMPETE tot (8 TeV) = 101 ± 5 mb LISHEP 18 March 2013 N. Cartiglia, INFN Turin
11 Regge Theory: master formula pre-lhc Three large families of parametrization: To infinity σ TOT (s) = c + α s β s 0.08 σ TOT (s) = c + α s γ ln 2 (s) (most favorite COMPETE prediction) σ TOT (s) = c + α s β ln(s) + γ ln 2 (s) Reggeon decrease Pomeron increase QCD: exchange of valence quark QCD: exchange of sea quark and gluons, glueballs.. But no high-m 11 diffraction! LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 11
12 The Rise of the gluons As measured at HERA, the gluon PDFs experience a very strong rise as the energy increases. If the pomeron is related to gluons, it s reasonable to assume a modification of the pomeron term: the cross section will start rising more rapidly at higher energy. LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 12
13 2-pomeron formula for higher energy In a simple model (DL, Cudel et al.) an additional term called hardpomeron can be introduced in σ TOT to account for this effect. It gives a steeper energy behavior: σ TOT (s) = α s β s γ s 0.45 (2 simple poles) Hard pomeron contribution DL for LHC: σ TOT ( s = 7) = mb LISHEP 18 March 2013 N. Cartiglia, INFN Turin. σ TOT ( s = 14) = mb 13
14 Total cross section and elastic scattering At small t, elastic scattering is governed by an exponential law. Elastic scattering probes the proton at a distance b ~ 1/ t dσ EL dt = Ae B t p p p p t Solid: Total spectrum, sum of 3 contributions Different models predicts different t spectrum and contributions The proton is made of different layers, each contributing differently to the cross section (3) (1) (2) (3) t > ~ 4 GeV 2 Elastic scattering on valence quark (1) t < ~ 1 GeV 2 ~ 0.2 fm Scattering between qqbar condensate >~ 0.4 fm (2) t ~1-4 GeV 2 Exchange of vector mesons LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 14
15 Monte Carlo models: RFT vs. pqcd QGSJET 01, QGSJET II SIBYLL PHOJET EPOS RFT based models Soft QCD σ Tot, σ El, σ Inel, σ SD, σ DD Extended to ~ Λ QCD Extended to Hard QCD pqcd based models PYTHIA HERWIG SHERPA LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 15
16 Topologies of events in σ tot TOTAL cross section means measuring everything We need to measure every kind of events, in the full rapidity range: σ Tot = σ elastic +σ diffractive (σ SD +σ DD +...)+σ Elastic: two-particle final state, very low p t, at very high rapidity.! Very difficult, needs dedicated detectors near the beam Diffractive: Single, Double, Central diffractions, gaps everywhere.! Quite difficult, some events have very small mass, difficult to distinguish diffraction from standard QCD. Everything else: jets, multi-particles, Higgs.! Easy LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 16
17 The very difficult part: elastic scattering Need dedicated experiments able to detect scattered particles very closed to the beam line: pp! pp Far p Sector 45 (220m) Near p p ~ 150 m p ~ 5 mm Sector 56 (220m) Near Far Top Top BLM Horizontal BPM IP5 BPM Horizontal BLM Bottom Bottom LHC Roman Pot and silicon detector LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 17
18 The difficult part: pomeron exchange Pomeron exchange is a synonym of colour singlet exchange (diffraction) Many different topologies to measure Importance of very low mass events LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 18
19 The easy part: everything else The non-diffractive inelastic events are usually not difficult to detect: LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 19
20 Direct measurement of parts of σ TOT : cosmic-ray and collider experiments In cosmic-ray experiments (AUGER just completed its analysis), the shower is seen from below. Using models, the value of σ inel (p-air) is inferred, and then using a technique based on the Glauber method, σ inel (pp) is evaluated. In collider experiments (currently ALICE, ATLAS, CMS, and LHC ), the detector covers a part of the possible rapidity space. The measurement is performed in that range, and then it might be extrapolated to σ inel. LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 20 η
21 We want to measure the point of impact Cosmic-ray shower The actual measurement is done on the ground, with Cherenkov light and muon detectors. What is measured is only loosely connected with the impact point LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 21
22 Cosmic-ray experiments: the method to measure σ inel - The path before interaction, X 1, is a function of the p-air cross section. - The experiments measure the position of the maximum of the shower, Xmax - Use MC models to related X max to X 1, and then σ (p-air) LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 22
23 Auger: the measurement The position of the air shower maximum, at fixed energy, X max, is sensitive to the cross section LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 23
24 Auger: p-air cross section AGASA Ne/Nµ Technique Fly s Eye X max tail AUGER X max tail HiRes X max tail EAS-TOP Ne/Nµ Technique LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 24
25 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 25
26 The Glauber model The p-air cross section is interpreted as the convolution of effects due to many nucleons LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 26
27 Auger: pp cross section LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 27
28 Collider experiments: measure σ inel by counting number of vertexes How to use pile-up events to your advantage LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 28
29 Pileup Analysis Technique The probability of having n pileup depends only on the visible σ(pp) cross section: If we count the number of pile-up events as a function of luminosity L, we can measure σ vis (pp). For an accurate measurement we need a large luminosity interval. LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 29
30 Probability of n extra vertices depends upon σ P(n vertexes ) = (Lσ )n vertexes n vertexes! e ( Lσ ) Fit to σ LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 30
31 Measurement of σ Inel using pile-up vertices P(n vertexes ) = (Lσ )n vertexes Extract σ assuming the pile-up follows a Poisson distribution n vertexes! e ( Lσ ) [mb] σ inel Total inelastic CMS - HF based CMS - Vtx based ATLAS TOTEM ALICE PYTHIA 6 CMS pp s = 7 TeV > 3 tracks > 2 tracks > 1 track ξ> PYTHIA 8 PYTHIA 8 + MBR PHOJET EPOS 1.99 QGSJET 01 QGSJET II-03 QGSJET II-04 SIBYLL 2.1 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 31
32 Collider experiments: measure σ inel by counting number of events The total inelastic proton-proton cross section is obtained by measuring the number of times opposite beams of protons hit each other and leave some energy in the most Hadronic Forward calorimeter (HF) E HF > 5 GeV is converted, using MC correction, into M x > 15 GeV (M 2 x /s = ξ > 5 * 10-6 ) LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 32
33 Hadronic Forward Activity: analysis technique 1) p p 2) p p 1) Count the number of times (i.e. the luminosity, Ldt ) in which there could have been scattering, for example using beam monitors that signal the presence of both beams. 2) Measure the number of times there was a scattering, for example measuring a minimum energy deposition in the detector 3) Correct for detection efficiency ε 4) Correct for the possibility of having more than one scattering (pileup) Fpu. σ Inel = N Event F pu ε Ldt LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 33 This method works only at low luminosity
34 Coverage of pileup and HF measurements Very small masses, invisible part What is escaping? >1 tracks All events? E>5 GeV LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 34
35 Rapidity coverage and low mass states The difficult part of the measurement is the detection of low mass states (M x ). A given mass M x covers an interval of rapidity: Δη = - ln (M x2 /m p ) M x [GeV] Δη ξ = M x2 /s Escape ξ = M x2 /s characterizes the reach of a given measurement. LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 35
36 A different method: σ TOT measured via optical theorem Optical theorem: elastic scattering at t =0! σ TOT B t dσ EL / dt = Ae t ρ = Ref el t=0 / Imf el t=0 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 36
37 Three basic type of results: 1) Elastic scattering Results 2) Comparison of the total value of the cross section between data and parameterizations as a function of the center-of-mass energy 3) Comparison of the value of parts of the cross section (elastic, diffractive, soft) with hadronic models (for example MCs) of pp interactions. LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 37
38 TOTEM: pp cross section at 7 TeV Elastic cross section: σ el = 25.4±1.1 mb B = 19.9 GeV -2 Using the optical theorem: t -7.8 σ TOT = 98.6 mb ± 2.2 mb t dip = 0.53 GeV 2 And then: σ inel = σ TOT σ el EPL 96 (2011) To be published σ inel = 73.1 mb ± 1.3 mb LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 38 Karsten Eggert p. 38
39 σ tot, σ inel, and σ el σ tot COMPETE (7 TeV) = 98 ± 5 mb σ tot COMPETE (8 TeV) = 101 ± 5 mb σ tot 2-pomeron (8 TeV) ~ 125 ± 5 mb σ tot TOTEM (7 TeV) = 98.6 ± 2.8 mb σ tot TOTEM (8 TeV) = ± 2.9 mb 133 ± 29 mb Auger 92 ± 14 mb σ inel TOTEM (7 TeV) = 73.1 ± 1.3 mb σ inel TOTEM (8 TeV) = 74.7 ± 1.7 mb σ el TOTEM (7 TeV) = 25.4 ± 1.1 mb σ el TOTEM (8 TeV) = 27.1 ± 1.4 mb σ el / σ tot (7 TeV) = ± σ el / σ tot (8 TeV) = ± 0.01 σ el / σ inel (7 TeV) = ± σ el / σ inel (8 TeV) = ± LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 39
40 Compilation of inelastic pp cross section Auger LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 40
41 σ inel for specific final states LHC experiments have measured the cross section for specific final states. These results are really useful to distinguish the importance of the various processes that are making up σ tot Very few models predict concurrently the correct values of σ for specific final states and σ Tot [mb] σ inel CMS pp s Total inelastic CMS - HF based CMS - Vtx based ATLAS TOTEM ALICE PYTHIA 6 > 3 tracks > 2 tracks > 1 track ξ>5 10 = 7 TeV -6 PYTHIA 8 PYTHIA 8 + MBR PHOJET EPOS 1.99 QGSJET 01 QGSJET II-03 QGSJET II-04 SIBYLL 2.1 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 41
42 Summary and outlook - I The study of the total cross section and its components is very active. A large set of new results have been presented in the last year: σ Tot (7 TeV), σ El (7 TeV), σ Ine (7 TeV), σ SD (7 TeV), σ DD (7 TeV) σ Tot (8 TeV), σ El (8 TeV), σ Ine (8 TeV) B slope and dip position of elastic scattering at 7 TeV σ Tot (57 TeV), σ Inel (57 TeV) σ Mx>15 (7 TeV), σ >1trk (7 TeV), σ 2trk (7 TeV), σ 3trk (7 TeV) LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 42
43 Summary and outlook - II The value of the total cross section σ tot TOTEM (8 TeV) = ± 2.9 mb is well reproduced by the preferred COMPETE fits, σ tot COMPETE (8 TeV) = 101 ± 5 mb ( ~ ln 2 (s) ) while the 2-pomeron prediction, σ tot 2-pomeron (8 TeV) ~ 125 ± 5 mb, is disfavored. Commonly used MCs such as PYTHIA do not reproduce correctly the sub-components of the total cross section. LHC data at 7 & 8 TeV, together with cosmic-ray results, are becoming more and more precise, and they are constraining the available models. A very interesting contact is happening: measurements at LHC detectors are used to constrain cosmic-ray models, as finally collider energies are high enough: the extrapolation between 14 GeV and AUGER is the same as Tevatron! LHC. Please invite me back in 3 years, 14 TeV in 2015!! LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 43
44 Reference 1. Several talks from the TOTEM home page: 2. Donnachie & Landshoff: 3. AUGER: 4. ALICE results, ISVHECRI 2012, Berlin, August D Enteria et al, Constraints from the first LHC data on hadronic event generators for ultra-high energy cosmic-ray physics 6. ATLAS 7. COMPETE collaboration (and reference in the linked page): 8. Many articles from the 13th Int. Conf. on Elastic and Diffractive Scattering CERN, confid=41547&view=standard&showdate=all&showsession=all&detaillevel =contribution LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 44
45 EXTRA LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 45
46 Experimental reach of t and β* Beam angular spread: σ(θ) ~ (1/β * ) Low t requires very small angular spread! very large β * October 24-25, 2012: β * : 11 " 90 " 500 " 1000m de- squeeze in 45 minutes Elastic cross section 2012: β * = 1000m Distance to beam < 1mm t-range for β*= 1km RPs at 3σ, ε = 2.4 µm β* = 1000m 2011: β* = 90m LISHEP 18 March 2013 N. Cartiglia, INFN Turin t / GeV 2
47 The Coulomb peak at t = 0 The t slope changes as a function of t value. Do no use: Coulomb part We need to measure this part Measurement of ρ by studying the Coulomb Nuclear interference region down to t ~ 6 x 10-4 GeV 2 LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 47
48 Measuring ρ using the Coulomb part From Marco Bozzo LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 48
49 Experimental coverage of rapidity ATLAS and CMS measure up to η = +- 5, which means they can reach values as low as ξ > 5 * 10-6 (Mx ~ 17 GeV) LHC detectors coverage ALICE covers -3.7 < η < 5.1 TOTEM has two detectors: T1: 3.1 < η < 4.7, T2: 5.3 < η < 6.5, ξ > 2 * 10-7 (Mx ~ 3.4 GeV) Main problem: from σ inel vis to the total value σ inel Solutions: 1) Don t do it 2) Put large error bars LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 49
50 TOTEM: t-distribution of pp elastic scattering 7 TeV The t-distribution measured by TOTEM was not predicted by any of the dynamical models of the proton LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 50 Karsten Eggert p. 50
51 Predictions for 14 TeV (pre-lhc) J. R. Cudell: The measurement of the total cross section at the LHC will tell us a lot about the analytic structure of the amplitude, as there is a variety of predictions that span the region from 90 to 230 mb: σ tot > 200 mb: the only unitarisation scheme able to accommodate such a large number is the U matrix. It basically predicts the same inelastic cross section as more standard schemes, but the elastic cross section is much larger, and accounts for the difference. 120 mb < σ tot < 160 mb: this would be a clear signal for a two-pomeron model, and would also tell us about the unitarisation scheme. σ tot 110 mb: this is the standard prediction not only of the COMPETE fits, but also of many models based on a simple eikonal and only one pomeron pole. σ tot < 100 mb: this would indicate either the validity of double-pole parametrisations, or that of unitarisation schemes in which multiple-pomeron vertices are important. LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 51
52 Cross Section Bounds Problem: the infinite rise of the cross section violates unitarity. The predictions have incorporated various processes and unitarity constrains that tame the rise of the value of the cross section. This process is called unitarization Froissart-Martin bound: σ TOT (s) <π/m 2 πlog 2 (s) However it s not a big deal for LHC: σ TOT < 4.3 barns Pumplin bound: σ El (s) < ½ σ TOT (s) σ El (s) ~ s 2ε σ Tot (s) ~ s ε At high energy: s 2ε > s ε Two-pomeron model without and with simple unitarization models LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 52
53 TOTEM: Shrinkage and σ el / σ 7 TeV The shrinkage of the forward peak continues, the proton becomes larger and larger. The elastic component is becoming more important with energy B [GeV 2 ] pp, Ref. [8] p p, Ref. [8] TOTEM this publication el/ tot [%] pp p p TOTEM this publication p 10 4 s [GeV] p 4 s [GeV] LISHEP 18 March 2013 N. Cartiglia, INFN Turin. 53 Karsten Eggert p. 53
Elastic and inelastic cross section measurements with the ATLAS detector
Elastic and inelastic cross section measurements with the ATLAS detector Simon Holm Stark Niels Bohr Institute University of Copenhagen MPI@LHC 2017 December 13, 2017, Shimla, India Outline: Physics motivation.
More information(Experimental) Soft Diffraction at LHC. Jan Kašpar. ISMD2017, Tlaxcala, Mexico 15 September, 2017
(Experimental) Soft Diffraction at LHC Jan Kašpar ISMD2017, Tlaxcala, Mexico 15 September, 2017 Introduction selected processes: Elastic scattering p + p p + p Single diffraction p + p p + X Double diffraction
More informationAtlas results on diffraction
Atlas results on diffraction Alessia Bruni INFN Bologna, Italy for the ATLAS collaboration Rencontres du Viet Nam 14th Workshop on Elastic and Diffractive Scattering Qui Nhon, 16/12/2011 EDS 2011 Alessia
More informationTotal Cross Section, Elastic Scattering and Diffraction Dissociation at the LHC
Total Cross Section, Elastic Scattering and Diffraction Dissociation at the LHC Marco Bozzo INFN Genova and University of Genova (Italy) on behalf of the TOTEM Collaboration Overview: The experiment and
More informationMeasurements of the total and inelastic pp cross section with the ATLAS detector at 8 and 13 TeV
Measurements of the total and inelastic pp cross section with the ATLAS detector at 8 and 13 TeV Motivation Measurements of the total and inelastic cross sections and their energy evolution probe the non-perturbative
More informationFrigyes Nemes (Eötvös University) on behalf of the TOTEM collaboration
Frigyes Nemes (Eötvös University) on behalf of the TOTEM collaboration http://totem.web.cern.ch/totem/ Hadron Structure'13 2013, 29 June 4 July Hadron Structure'13 6/18/2013 Frigyes Nemes, TOTEM 1 Total
More informationRecent results on soft QCD topics from ATLAS
Recent results on soft QCD topics from ATLAS Roman Lysák Institute of Physics, Prague on behalf of the ATLAS collaboration Bormio 2016 Overview Understanding of soft-qcd interactions has direct impact
More informationTotal, elastic and inelastic p-p cross sections at the LHC
Total, elastic and inelastic p-p cross sections at the LHC Tomáš Sýkora, Charles University in Prague on behalf of the ATLAS, CMS, LHCb and TOTEM collaborations ICHEP 2016, August 3-10, 2016, Chicago outline
More informationTotal Inelastic Cross Section at LHC. Sara Valentinetti, INFN and Univ. of Bologna (Italy) On behalf of ATLAS and CMS
Total Inelastic Cross Section at LHC Sara Valentinetti, INFN and Univ. of Bologna (Italy) On behalf of ATLAS and CMS LC13 Workshop, ECT*, Villa Tambosi, Villazzano (TN), 16-20 Sep 2013 Outline Introduction
More informationFIRST MEASUREMENTS OF PROTON-PROTON ELASTIC SCATTERING AND TOTAL CROSS-SECTION AT THE LHC BY TOTEM
FIRST MEASUREMENTS OF PROTON-PROTON ELASTIC SCATTERING AND TOTAL CROSS-SECTION AT THE LHC BY TOTEM M. DEILE on behalf of the TOTEM Collaboration CERN, 111 Genève 3, Switzerland The TOTEM experiment at
More informationTotal Cross Section, Elastic Scattering and Diffraction Dissociation at the LHC
Total Cross Section, Elastic Scattering and Diffraction Dissociation at the LHC Marco Bozzo INFN Genova e Universita di Genova (Italy) [for the TOTEM collaboration] Marco Bozzo 1 Outlook The TOTEM experiment
More informationRecent forward physics and diffraction results from CMS
Recent forward physics and diffraction results from CMS Gabor Veres (CERN) on behalf of the CMS Collaboration ISMD 2015 Conference, Wildbad Kreuth, Germany October 5th, 2015 Outline CMS: forward instrumentation
More informationMeasurements of the elastic, inelastic and total cross sections in pp collisions with ATLAS subdetectors
Measurements of the elastic, inelastic and total cross sections in pp collisions with ATLAS subdetectors 1 On behalf of the ATLAS collaboration University of Bologna Viale Berti Pichat 6/2,40127 Bologna,
More informationPrecision RENORM / MBR Predictions for Diffraction at LHC
Precision RENORM / MBR Predictions for Diffraction at LHC Konstantin Goulianos http://physics.rockefeller.edu/dino/my.html Precision predictions? Wow! 1 Basic and combined diffractive CONTENTS processes
More informationMeasurements of Proton-Proton Elastic Scattering and Total Cross-Section at the LHC by TOTEM Diffraction 2012 Lanzarote, 15 September
Measurements of Proton-Proton Elastic Scattering and Total Cross-Section at the LHC by TOTEM Diffraction 2012 Lanzarote, 15 September Mario Deile on behalf of the TOTEM Collaboration p. 1 Experimental
More informationMBR Monte Carlo Simulation in PYTHIA8
The Rockefeller University, 10 York Avenue, New York, NY 06, USA E-mail: robert.ciesielski@rockefeller.edu Konstantin Goulianos The Rockefeller University, 10 York Avenue, New York, NY 06, USA E-mail:
More informationStatus of diffractive models. Robert Ciesielski [The Rockefeller University]
Status of diffractive models Robert Ciesielski [The Rockefeller University] CTEQ Workshop, QCD tool for LHC Physics: From 8 to 14 TeV, what is needed and why FNAL, 14 November, 2013 1 Main processes contributing
More informationTim Martin - University of Birmingham
Tim Martin - University of Birmingham 1 2 Overview Modeling Inelastic Diffraction Diffractive Events in ATLAS Large Rapidity Gaps Interpreting the Data 3 pp Cross Section Double Diff. Central Exclusive
More informationULTRA-HIGH ENERGY COSMIC RAY COMPOSITION and MUON CONTENT vs. HADRONIC MODELS. Esteban Roulet Bariloche, Argentina
ULTRA-HIGH ENERGY COSMIC RAY COMPOSITION and MUON CONTENT vs. HADRONIC MODELS Esteban Roulet Bariloche, Argentina Many observables are sensitive to CR composition Shower maximum TA APP 64 (2014) Auger
More informationpa at the LHC and Extensive Air Shower Development
Muons in pa at the LHC and Extensive Air Shower Development Tanguy Pierog Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany Workshop on pa@lhc, ECT* Trento, Italy May the 9th
More informationTOTEM Update BSM? Fredrik Oljemark (Helsinki Univ. & HIP) On behalf of the TOTEM Collaboration Jyväskylä, TOTEM p. 1
TOTEM Update Fredrik Oljemark (Helsinki Univ. & HIP) b BSM? On behalf of the TOTEM Collaboration Jyväskylä, 25.11.2016 TOTEM p. 1 TOTEM Physics Overview Total cross-section Elastic Scattering b Forward
More informationFirst Measurements of Proton-Proton Elastic Scattering and Total Cross-Section at the LHC. EDS 2011 Qui Nhon, Vietnam
First Measurements of Proton-Proton Elastic Scattering and Total Cross-Section at the LHC EDS 2011 Qui Nhon, Vietnam Mario Deile on behalf of the TOTEM Collaboration p. 1 Experimental Setup @ IP5 Inelastic
More informationJános Sziklai. WIGNER RCP On behalf of the TOTEM Collaboration:
Elastic scattering, total cross-section and charged particle pseudorapidity density in 7 TeV pp reactions measured by the TOTEM Experiment at the LHC János Sziklai WIGNER RCP On behalf of the TOTEM Collaboration:
More informationLow mass diffraction at ATLAS-LHCf
Low mass diffraction at ATLAS-LHCf Qi-Dong hou Nagoya University (JP) France-Japan SAKURA Workshop on small-x physics at the LHC 6..9 Outline Diffractive dissociation A MC study about contribution of diffractive
More informationCosmic Ray Interaction Models: Overview
Cosmic Ray Interaction Models: Overview Sergey Ostapchenko Frankfurt Institute for Advanced Studies [] ISMD-2015 Wildbad Kreuth, October 4-9, 2015 Cosmic ray studies with extensive air shower techniques
More informationSOFT QCD AT ATLAS AND CMS
SAHAL YACOOB UNIVERSITY OF CAPE TOWN ON BEHALF OF THE ATLAS AND CMS COLLABORATIONS SOFT QCD AT ATLAS AND CMS 28th Rencontres de Blois INTRODUCTION IN 15 MINUTES 2 Inelastic cross section ATLAS and CMS
More informationResults, Status and Perspectives for 2010/11. Karsten Eggert on behalf of the TOTEM Collaboration
Results, Status and Perspectives for 2010/11 Karsten Eggert on behalf of the TOTEM Collaboration Workshop on Hadron Hadron & Cosmic-Ray Interactions at multi-tev Energies ECT* - Trento, Nov 29th Dec 3
More informationPomeron Intercept and Slope: are they related?
Pomeron Intercept and Slope: are they related? K. Goulianos The Rockefeller University intercept slope Small-x and Diffraction, FERMILAB, 7-3 March 007 Contents Introduction Diffraction in QCD Pomeron
More informationResults and Perspectives in Forward Physics with ATLAS
Nuclear Physics B Proceedings Supplement 00 (2015) 1 9 Nuclear Physics B Proceedings Supplement Results and Perspectives in Forward Physics with ATLAS B. Giacobbe on behalf of the ATLAS Collaboration Istituto
More informationMBR Monte Carlo Simulation in PYTHIA8
MBR Monte Carlo Simulation in PYTHIA8 Robert Ciesielski, Konstantin Goulianos The Rockefeller University, 130 York Avenue, New York, NY 10065, USA E-mail: robert.ciesielski@rockefeller.edu, dino@rockefeller.edu
More informationRENORM Tensor-Pomeron Diffractive Predictions K. Goulianos
RENORM Tensor-Pomeron Diffractive Predictions Konstantin Goulianos The Rockefeller University (Dino) http://physics.rockefeller.edu/dino/my.html thanks to Tran & Kim! photo credit: Emmanuelle Tran 1 Basic
More informationSome studies for ALICE
Some studies for ALICE Motivations for a p-p programme in ALICE Special features of the ALICE detector Preliminary studies of Physics Performances of ALICE for the measurement of some global properties
More informationRENORM Tensor-Pomeron Diffractive Predictions. Konstantin Goulianos
RENORM Tensor-Pomeron Diffractive Predictions Konstantin Goulianos The Rockefeller University (Dino) http://physics.rockefeller.edu/dino/my.html thanks to Tran & Kim! photo credit: Emmanuelle Tran Moriond
More informationDiffraction and rapidity gap measurements with ATLAS
Diffraction and rapidity gap measurements with On behalf of the Collaboration Institute of Physics, Academy of Sciences of the CR E-mail: vlastimil.kus@cern.ch ATL-PHYS-PROC-04-004 08/0/04 Two diffraction
More informationPomeron Intercept and Slope: the QCD connection
Pomeron Intercept and Slope: the QCD connection th International Conference on Elastic and Diffractive Scattering Forward Physics and QCD K. Goulianos The Rockefeller University intercept slope th Blois
More informationDiffraction Physics at LHCb
Diffraction Physics at LHCb Michael Schmelling LHCb / MPI for Nuclear Physics The LHCb Experiment Energy Flow Central Exclusive Production New Developments Summary Diffraction Physis at LHCb M. Schmelling,
More informationStudies on the definition of inelastic Non-Single Diffractive events
Studies on the definition of inelastic Non-Single Diffractive events Armando Bermúdez Martínez Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Havana, Cuba Supervisor: Hannes Jung September,
More informationDIFFRACTIVE DIJET PRODUCTION AT CDF. Konstantin Goulianos (for the CDF II Collaboration)
DIFFRACTIVE DIJET PRODUCTION AT CDF Konstantin Goulianos (for the CDF II Collaboration) 1 CONTENTS Introduction / motivation Diffractive dijets Summary 2 STUDIES OF DIFFRACTION IN QCD Non-diffractive color-exchange
More informationLuminosity measurement at LHC
Luminosity measurement at LHC Corsi di Dottorato congiunti BO-FE-PD Corso di Fisica delle Alte Energie Aprile 2012 Per Grafstrom CERN Che cosa è la luminosita? Organizzazione Perche misurare la luminosita?
More informationCHAPTER 2 ELECTRON-PROTON COLLISION
CHAPTER ELECTRON-PROTON COLLISION.1 Electron-proton collision at HERA The collision between electron and proton at HERA is useful to obtain the kinematical values of particle diffraction and interaction
More informationLuminosity determination at proton colliders. November 2015 Per Grafstrom CERN and University of Bologna
Luminosity determination at proton colliders November 2015 Per Grafstrom CERN and University of Bologna 1 % Range of precision in luminosity measurements in % 6 5 4 Tevatron 3 2 SPS collider 1 ISR LHC
More informationPrecision RENORM Tensor-Pomeron Cross Sections K. Goulianos
Precision RENORM Tensor-Pomeron Cross Sections Konstantin Goulianos The Rockefeller University http://physics.rockefeller.edu/dino/my.html 5 th International Conference on New Frontiers in Physics ICNFP2016
More informationPrecision RENORM Tensor-Pomeron Cross Sections at LHC and Beyond
Precision RENORM Tensor-Pomeron Cross Sections at LHC and Beyond Konstantin Goulianos The Rockefeller University http://physics.rockefeller.edu/dino/my.html http://www.cs.infn.it/diff2016 1 Basic and combined
More informationHadronic Interactions and Cosmic Ray Physics
Hadronic Interactions and Cosmic Ray Physics Tanguy Pierog Karlsruhe Institute of Technology, Institut für KernPhysik, Karlsruhe, Germany VHEPU, Quy Nhon, Vietnam August the 4th 2014 T. Pierog, KIT - 1/25
More informationRecent CMS results in the forward region with the CASTOR detector. Sebastian Baur for the CMS Collaboration
Recent CMS results in the forward region with the CASTOR detector Sebastian Baur for the CMS Collaboration The Forward Instrumentation of CMS 2 Overview CMS has an excellent calorimetric instrumentation
More informationElastic and Total Cross-Section Measurements by TOTEM: Past and Future
Elastic and Total Cross-Section Measurements by TOTEM: Past and Future CERN (Also at Wigner RCP, Hungary) E-mail: fnemes@cern.ch The TOTEM experiment at the LHC has measured proton-proton elastic scattering
More informationQCD at Cosmic energies VII
Impact of Minijet & Heavy-quark Production on the Muon Anomaly in Atmospheric Showers from Ultrahigh Energy Cosmic Rays QCD at Cosmic energies VII Chalkida, 19th May 2016 Sun Guanhao (HKUST, CERN) David
More informationResults from combined CMS-TOTEM data
Department of Physics Engineering, Hacettepe University, Ankara, Turkey The University of Iowa, Iowa City, USA E-mail: Sercan.Sen@cern.ch The combined data taking of the CMS and TOTEM experiments allows
More informationReview of LHCb results on MPI, soft QCD and diffraction
Review of LHCb results on MPI, soft QCD and diffraction Marcin Kucharczyk on behalf of LHCb collaboration HNI Krakow EDS Blois 2015, Borgo (Corse), 30.06.2015 Outline LHCb - general purpose forward experiment
More informationMini-Bias and Underlying Event Studies at CMS
Yuan Chao Department of Physics National Taiwan University 1617 Taipei, TAIWAN 1 Introduction The Tevatron experiments provide us very good information for the quantum chromodynamics (QCD) modelings of
More informationTransverse momentum and pseudorapidity distributions with minimum bias events in CMS at the LHC
Transverse momentum and pseudorapidity distributions with minimum bias events in CMS at the LHC Christof Roland/ MIT For the CMS Collaboration Rencontres de Moriond QCD Session 14 th March, 2010 Moriond
More informationThe LHCf data hadronic interactions and UHECR showers. Paolo Lipari LHCf meeting Catania, 6th july 2011
The LHCf data hadronic interactions and UHECR showers Paolo Lipari LHCf meeting Catania, 6th july 2011 ~50 years of UHECR Problems of determination of: Energy Mass A Hadronic interaction Modeling Measure
More informationVector meson photoproduction in ultra-peripheral p-pb collisions measured using the ALICE detector
Vector meson photoproduction in ultra-peripheral p-pb collisions measured using the ALICE detector Jaroslav Adam On behalf of the ALICE Collaboration Faculty of Nuclear Sciences and Physical Engineering
More informationForward Physics at LHC
1 Forward Physics at LHC Risto Orava University of Helsinki and Helsinki Institute of Physics Physics Objectives & Background A Case Study at LHC - ATLAS Detectors for the Forward Spectrometer Planned
More informationForward QCD studies and prospects at the LHC
Forward QCD studies and prospects at the LHC Pierre.VanMechelen@ua.ac.be (*) INT Workshop on Perturbative and Non-Perturbative Aspects of QCD at Collider Energies 1 Seattle, September 13-18, 2010 (*) As
More informationDiffraction at the LHC
Diffraction at the LHC at the boundary of experiment and theory Mikael Mieskolainen, Risto Orava Helsinki Institute of Physics (HIP), University of Helsinki Diffractive and Electromagnetic processes -
More informationarxiv: v2 [hep-ph] 30 Jan 2018
IPPP/17/89 January 31, 2018 Elastic proton-proton scattering at 13 TeV arxiv:1712.00325v2 [hep-ph] 30 Jan 2018 V.A. Khoze a,b, A.D. Martin a and M.G. Ryskin a,b a Institute for Particle Physics Phenomenology,
More informationarxiv: v1 [hep-ph] 17 Nov 2008
The Interplay Between Data and Theory in Recent Unitarity Models arxiv:0811.2636v1 [hep-ph] 17 Nov 2008 Uri Maor Department of Particle Physics, School of Physics and Astronomy, Raymond and Beverly Sackler
More informationQCD Studies at LHC with the Atlas detector
QCD Studies at LHC with the Atlas detector Introduction Sebastian Eckweiler - University of Mainz (on behalf of the ATLAS Collaboration) Examples of QCD studies Minimum bias & underlying event Jet-physics
More informationColor dipoles: from HERA to EIC
Université de Moncton INT workshop: Gluons and the quark sea at high energies,distributions, polarisation, tomography September 29, 2010 based on work done with J. R. Forshaw, G.Shaw and B. E. Cox (Manchester
More informationMeasurement of the associated production of direct photons and jets with the Atlas experiment at LHC. Michele Cascella
Measurement of the associated production of direct photons and jets with the Atlas experiment at LHC Michele Cascella Graduate Course in Physics University of Pisa The School of Graduate Studies in Basic
More informationarxiv: v1 [hep-ex] 5 Mar 2017
Recent CMS Results on Diffraction arxiv:703.0604v [hep-ex] 5 Mar 207 Roland Benoît on behalf of the CMS Collaboration DESY - CMS Notkestrasse 85, 22603 Hamburg Germany Abstract Recent CMS results on diffraction
More informationQCD at CDF. Régis Lefèvre IFAE Barcelona On behalf of the CDF Collaboration
QCD at CDF Régis Lefèvre IFAE Barcelona On behalf of the CDF Collaboration Jet Inclusive Cross-Section Underlying event studies Jet Shapes Specific processes _ W+Jets, γ + γ, γ + b/c, b-jet / bb jet Diffraction
More informationLuminosity measurements and diffractive physics in ATLAS
Luminosity measurements and diffractive physics in ATLAS DAPNIA-SPP, CEA Saclay, F91191 Gif-sur-Yvette, France E-mail: royon@hep.saclay.cea.fr We first describe the measurement of the elastic scattering
More informationV 0 production studies at LHCb. Mathias Knecht, EPFL , joint SPS-ÖPG-ÖGA 2 meeting, Innsbrück, Österreich, September 2-4, 2009
V 0 production studies at LHCb Mathias Knecht, EPFL 2 9 2009, joint SPS-ÖPG-ÖGA 2 meeting, Innsbrück, Österreich, September 2-4, 2009 Outline One of the first measurements to be done with the LHCb detector...
More informationarxiv: v1 [hep-ex] 18 Apr 2011
arxiv:.35v [hep-ex] Apr Exclusive π + π Production at the LHC with Forward Proton Tagging R. Staszewski a, P. Lebiedowicz a, M. Trzebiński a, J. Chwastowski b,a and A. Szczurek a,c a Institute of Nuclear
More informationReview of accelerator data of relevance to air shower simulations
Y.Itow, Review of Accelerator data UHECR2012@ 14Feb2012 Review of accelerator data of relevance to air shower simulations Yoshitaka Itow STE Lab / Kobayashi-Maskawa Inst. Nagoya University UHECR 2012 Feb
More informationPhysics with Tagged Forward Protons using the STAR Detector at RHIC. The Relativistic Heavy Ion Collider The pp2pp Experiment STAR 2009
Physics with Tagged Forward Protons using the STAR Detector at RHIC The Relativistic Heavy Ion Collider The pp2pp Experiment 2002 2003 STAR 2009 Elastic and Diffractive Processes Elastic scattering Detect
More informationModelling MB pp,pa Collisions at the LHC and in Cosmic Rays : EPOS case
Modelling MB pp,pa Collisions at the LHC and in Cosmic Rays : EPOS case Tanguy Pierog Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany K. Werner (SUBATECH, Nantes, France),
More informationDiffractive and Central Processes at the LHC (a theoretical perspective)
Diffractive and Central Processes at the LHC (a theoretical perspective) V.A. Khoze Khoze (IPPP, Durham ) (Based on works with L.Harland-Lang, A.Martin and M.Ryskin) 1 Forward and Diffractive Physics at
More informationExperimental Constraints to High Energy Hadronic Interaction Models using the Pierre Auger Observatory Part II
Experimental Constraints to High Energy Hadronic Interaction Models using the Pierre Auger Observatory Part II Tanguy Pierog Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
More informationJet Energy Calibration. Beate Heinemann University of Liverpool
Jet Energy Calibration Beate Heinemann University of Liverpool Fermilab, August 14th 2006 1 Outline Introduction CDF and D0 calorimeters Response corrections Multiple interactions η-dependent corrections
More informationDiffractive and Central Processes at the LHC (a theoretical perspective)
Diffractive and Central Processes at the LHC (a theoretical perspective) V.A. Khoze Khoze (IPPP, Durham ) (Based on works with L.Harland-Lang, A.Martin and M.Ryskin) 1 Forward and Diffractive Physics at
More informationScience case for recording protonoxygen collisions at the LHC
Science case for recording protonoxygen collisions at the LHC Hans Dembinski MPIK Heidelberg LHC WG Forward Physics and Diffraction 2018-03-20 KASCADE, IceCube, TUNKA Pierre Auger, Telescope Array data
More informationReport from the LHC Forward Physics Working Group 2014, Kraków
Report from the LHC Forward Physics Working Group MPI@LHC 2014, Kraków Tim Martin On behalf of the LHC Forward Physics Working Group University of Warwick November 5, 2014 Introduction Understanding of
More informationPhysics at Hadron Colliders Part II
Physics at Hadron Colliders Part II Marina Cobal Università di Udine 1 The structure of an event One incoming parton from each of the protons enters the hard process, where then a number of outgoing particles
More informationTESTING THE STANDARD MODEL IN THE FORWARD REGION AT THE LHC
TESTING THE STANDARD MODEL IN THE FORWARD REGION AT THE LHC Ronan McNulty (UCD Dublin) Irish Quantum Foundations, Castletown House, 3,4 th May 2013 Ronan McNulty, Irish Quantum Foundations 2 Outline Theory:
More informationNovel features of diffraction at the LHC
Novel features of diffraction at the LHC arxiv:hep-ph/0103257v2 14 Sep 2001 V. A. Petrov, A. V. Prokudin, S. M. Troshin, N. E. Tyurin Institute for High Energy Physics, Protvino, Moscow Region, 142280,
More informationDiffraction Results at LHC: Solving a Puzzle Using Precision RENORM Predictions
Diffraction Results at LHC: Solving a Puzzle Using Precision RENORM Predictions Konstantin Goulianos The Rockefeller University http://physics.rockefeller.edu/dino/my.html https://www.brown.edu/conference/15th-workshop-non-perturbative-quantum-chromodynamics/
More informationQCD at Cosmic Energies - VII May 16-20, 2016 Chalkida, Greece Multiparton interactions in Herwig
QCD at Cosmic Energies - VII May 6-20, 206 Chalkida, Greece Multiparton interactions in Herwig Frashër Loshaj Table of Contents Introduction 2 MPI and the Underlying event 3 Soft interactions 4 Diffraction
More informationNeutral particles energy spectra for 900 GeV and 7 TeV p-p collisions, measured by the LHCf experiment
Neutral particles energy spectra for 900 GeV and 7 TeV p-p collisions, measured by the LHCf experiment Raffaello D Alessandro 1 Department of Physics Università di Firenze and INFN-Firenze I-50019 Sesto
More informationExclusive diffractive results from ATLAS, CMS, LHCb, TOTEM at the LHC
Exclusive diffractive results from ATLAS, CMS, LHCb, TOTEM at the LHC Christophe Royon 1, 1 Department of Physics and Astronomy, The University of Kansas, Lawrence, USA On behalf of the ATLAS, CMS, LHCb
More informationLeading Baryons at HERA
Leading Baryons at HERA R.Sacchi Univ. of Torino and INFN On behalf of the ZEUS and H1 Introduction and models Data sets LB normalized cross sections in DIS and γp LN + dijets in γp Comparisons with models
More informationA Triple-GEM Telescope for the TOTEM Experiment
A Triple-GEM Telescope for the TOTEM Experiment Giuseppe Latino (Siena University & Pisa INFN) IPRD06 Siena October 4, 2006 TOTEM Experiment @ LHC T2 Telescope 3-GEM Technology Detailed Detector Simulation
More informationDetecting. Particles
Detecting Experimental Elementary Particle Physics Group at the University of Arizona + Searching for Quark Compositeness at the LHC Particles Michael Shupe Department of Physics M. Shupe - ATLAS Collaboration
More informationZero degree neutron energy spectra measured by LHCf at s = 13 TeV proton-proton collision
Zero degree neutron energy spectra measured by LHCf at s = TeV proton-proton collision Nagoya university, ISEE E-mail: ueno.mana@isee.nagoya-u.ac.jp The Large Hadron Collider forward (LHCf) experiment
More informationExclusive Central π+π- Production in Proton Antiproton Collisions at the CDF
Exclusive Central π+π- Production in Proton Antiproton Collisions at the CDF Maria Żurek Research Center Jülich University of Cologne on behalf of the CDF Collaboration XLV International Symposium on Multiparticle
More informationLecture LHC How to measure cross sections...
Lecture 5b:Luminosity @ LHC How to measure cross sections... Cross Section & Luminosity Luminosities in run-i @ LHC How to measure luminosity Cross Section & Luminosity Methods for Luminosity Measurement
More informationLHC MPI and underlying event results
LHC MPI and underlying event results Marianna Testa (ATLAS) for the ALICE, ATLAS, CMS & LHCb collaborations SM@LHC 2012, Copenhagen, 10-13 April 2012 The Underlying Event Everything in hadron collisions
More informationMeasurement of the Inclusive Isolated Prompt Photon Cross Section at CDF
of the Inclusive Isolated Cross at IFAE Barcelona HEP Seminar University of Virginia Outline Theoretical introduction Prompt photon production The The Photon detection prediction The pqcd NLO prediction
More informationTop production measurements using the ATLAS detector at the LHC
Top production measurements using the ATLAS detector at the LHC INFN, Sezione di Bologna and University of Bologna E-mail: romano@bo.infn.it This paper is an overview of recent results on top-quark production
More informationCharged particle multiplicity in proton-proton collisions with ALICE
Charged particle multiplicity in proton-proton collisions with ALICE Introduction on the motivations for a pp physics programme with ALICE A short review on the detectors used to reconstruct charged particle
More informationHadron Collider Physics, HCP2004, June 14-18
) " % "" ' & % % " ) " % '% &* ' ) * ' + " ' ) ( $#! ' "") ( * " ) +% % )( (. ' + -, '+ % &* ' ) ( 021 % # / ( * *' 5 4* 3 %( '' ' " + +% Hadron Collider Physics, HCP2004, June 14-18 The Run II DØ Detector
More informationForward Physics Measurements at the LHC
Forward Physics Measurements at the LHC Helsinki Institute of Physics and University of Helsinki P.O. Box 64, 0004 University of Helsinki, Finland E-mail: risto.orava@helsinki.fi A unique experiment is
More informationarxiv:hep-ex/ v1 27 Oct 2004
Proceedings of the DIS 2004, Štrbské Pleso, Slovakia TOTEM: FORWARD PHYSICS AT THE LHC arxiv:hep-ex/0410084v1 27 Oct 2004 MARIO DEILE ON BEHALF OF THE TOTEM COLLABORATION CERN 1211 Genève 23, Switzerland
More informationStandard Model of Particle Physics SS 2012
Lecture: Standard Model of Particle Physics Heidelberg SS 2012 W- and Z-Bosons 1 2 Contents Discovery of real W- and Z-bosons Intermezzo: QCD at Hadron Colliders LEP + Detectors W- and Z- Physics at LEP
More informationECFA Meeting March 9 10, Prague. Alexander Kupčo. Institute of Physics, Center for Particle Physics, Prague
ECFA Meeting March 9, Prague Alexander Kupčo Institute of Physics, Center for Particle Physics, Prague DIRAC experiment Phase I: Precise measurement of pionium lifetime Alexander Kupčo, Institute of Physics,
More informationProperties of Proton-proton Collision and. Comparing Event Generators by Multi-jet Events
Properties of Proton-proton Collision and Comparing Event Generators by Multi-jet Events Author: W. H. TANG 1 (Department of Physics, The Chinese University of Hong Kong) Supervisors: Z. L. MARSHALL 2,
More informationPROTON STRUCTURE FROM HIGH ENERGY PROTON-PROTON AND ANTIPROTON-PROTON ELASTIC SCATTERING
PROTON STRUCTURE FROM HIGH ENERGY PROTON-PROTON AND ANTIPROTON-PROTON ELASTIC SCATTERING M. M. Islam 1, J. Kašpar 2,3, R. J. Luddy 1 1 Department of Physics, University of Connecticut, Storrs, CT 06269
More informationUsing Drell-Yan to Probe the
Using Drell-Yan to Probe the Underlying Event in Run 2 at CDF Deepak Kar University of Florida (On behalf of the CDF Collaboration) Experimental Particle Physics Seminar 30 th October 2008 Prologue: We
More information