Measurement of the baryon number transport with LHCb
|
|
|
- Collin Butler
- 6 years ago
- Views:
Transcription
1 Measurement of the baryon number transport with LHCb Marco Adinolfi University of Bristol On behalf of the LHCb Collaboration 13 April 2011 / DIS 2011 Marco Adinolfi DIS April Newport News 1/29
2 Outline 1 Introduction 2 An overview of the LHCb experiment 3 Λ/Λ and Λ/KS ratios 4 p/p ratio 5 Conclusions Marco Adinolfi DIS April Newport News 2/29
3 Outline 1 Introduction 2 An overview of the LHCb experiment 3 Λ/Λ and Λ/KS ratios 4 p/p ratio 5 Conclusions Marco Adinolfi DIS April Newport News 3/29
4 Introduction Full calculation of collision and hadronization process is not possible, only phenomenological models are available. Many different generators can be used to reproduce experimental data. Each generator can use one or more mechanisms to model the interaction. Studies of proton-proton collision at the LHC can help in selecting or tuning models. Good description of the underlying event fundamental for the whole LHCb physics programme. Useful quantities to study are the Λ/Λ, Λ/K S and p/p ratios. Already many different generators have, at LHC energies, different predictions, which diverge at the rapidities covered by LHCb. Many systematics cancel out. Marco Adinolfi DIS April Newport News 4/29
5 Outline 1 Introduction 2 An overview of the LHCb experiment 3 Λ/Λ and Λ/KS ratios 4 p/p ratio 5 Conclusions Marco Adinolfi DIS April Newport News 5/29
6 The LHCb detector Single arm forward spectrometer Low p T Unique fully equipped coverage in the region 1.9 < η < 4.9. Only LHC experiment that can study in the high η low p T region. Designed for precision CP violation measurements and the search of rare B decays b b pairs per second: only 4% of the solid angle is covered but 40% of the pairs are captured. Marco Adinolfi DIS April Newport News 6/29
7 Introduction An overview of the LHCb experiment Λ /Λ and Λ /KS ratios p /p ratio Conclusions Tracking With current best reconstruction: IP resolution: 15 µm in the highest pt bin. Resolution for primary and secondary vertices: 50 µm and 150 µm respectively. δp/p 0.5% Proper time resolution: 50 fs. Tracking efficiency 95%. 900 GeV data collected with the VELO partially open. Marco Adinolfi DIS April Newport News 7/29
8 RICH detectors Particle ID system based on 2 RICH detectors and 3 radiators. RICH 1: Aerogel C 4 F 10 2 GeV < p < 10 GeV 10 GeV < p < 60 GeV RICH 2: CF 4 20 GeV < p < 100 GeV Marco Adinolfi DIS April Newport News 8/29
9 Particle ID LHCb RICH detectors provide an excellent particle identification in good agreement with expectations over the entire design momentum spectrum. Marco Adinolfi DIS April Newport News 9/29
10 Data sample 6.8 µb 1 at 900 GeV collected in 2009 with Minimum Bias trigger: requires activity in the calorimeter. 0.3 nb 1 at 900 GeV in 2010 collected with Minimum Bias trigger: requires 1 track in the VELO. Used in this analysis. 14 nb 1 at 7 TeV in 2010 collected with Minimum Bias trigger: requires 1 track in the VELO. Used in this analysis. Sub-sample of 37.7 pb 1 at 7 TeV collected in Data collected with 2 opposite magnet polarities (up and down). Marco Adinolfi DIS April Newport News 10/29
11 Outline 1 Introduction 2 An overview of the LHCb experiment 3 Λ/Λ and Λ/KS ratios 4 p/p ratio 5 Conclusions Marco Adinolfi DIS April Newport News 11/29
12 Particle selections Only tracks with in hits in VELO and downstream tracking (long tracks). Prompt Λ and K S selected using a Fisher discriminant based on the mother and daughters impact parameter. Systematics partially cancel. Marco Adinolfi DIS April Newport News 12/29
13 Λ p T uncorrected spectra The p T uncorrected spectra for the Λ are harder than predicted by LHCb Monte Carlo. Efficiencies are estimated from Monte Carlo. Re-weighting procedure introduced to remove biases. Marco Adinolfi DIS April Newport News 13/29
14 Systematics Λ/Λ Λ/KS Diffractive event contamination 1-2% 1-2% Non prompt contamination < 1% < 1% Material interactions 2% 2% Primary vertex finding < 2% < 1% Track finding negl. 1% MC kinematic corrections < 5% < 3% Marco Adinolfi DIS April Newport News 14/29
15 Λ/Λ ratio Baryon number transport higher than expected at 900 GeV. CERN-LHCb-CONF Perugia selection: Phys. Rev. D, 82(7): (2010) Marco Adinolfi DIS April Newport News 15/29
16 Baryon number transport Λ/Λ y = y beam y Λ is a Lorentz invariant. Allows comparison between different CM energies. First measuments at low y. Consistent with other experiments. Marco Adinolfi DIS April Newport News 16/29
17 Λ/K S ratio Baryon/Meson suppression lower than expected. CERN-LHCb-CONF Marco Adinolfi DIS April Newport News 17/29
18 Outline 1 Introduction 2 An overview of the LHCb experiment 3 Λ/Λ and Λ/KS ratios 4 p/p ratio 5 Conclusions Marco Adinolfi DIS April Newport News 18/29
19 Particle ID calibration Only long tracks accepted. Cut on track χ 2 to remove fakes. Prompt tracks selected using the impact parameter. Cuts tuned on MC. Pure sample of protons then selected using RICH information. Efficiencies and mis-identification determined from data using calibrations samples. Φ K + K K S π + π Λ πp Marco Adinolfi DIS April Newport News 19/29
20 Protons selection DLL(x-y) = Delta log likelihood between x and y particle hypothesis. Hashed lines show the selection region. Calibration samples used to measure: proton selection efficiency; pion and kaon contamination. Marco Adinolfi DIS April Newport News 20/29
21 Contamination correction p sel K sel π sel = p p K p π p p K K K π K p π K π π π p True K True π True Matrix determined from MonteCarlo in (p T, η) bins. Matrix determined separately for p and p. Different interaction cross section between p and p in particular at low momentum. Restrict to p > 5 GeV and correct from MC. Marco Adinolfi DIS April Newport News 21/29
22 Baryon number transport p/p at 900 GeV Major sources of systematic errors include: 900 GeV 7 TeV PID Contamination 2-14% 2-8% Magnet polarity 0.1-3% 1-3% Beam crossing angle 0.5 % 3% Baryon number transport higher than expected at 900 GeV and consistent with the Λ/Λ ratio result. Marco Adinolfi DIS April Newport News 22/29
23 Baryon number transport p/p at 7 TeV Ratios become flatter as expectected from models. Better agreement with Monte Carlo than at 900 GeV. Consistent with the Λ/Λ ratio result. Marco Adinolfi DIS April Newport News 23/29
24 Baryon number transport p/p y = y beam y p Results are consistent with previous experiments. CERN-LHCb-CONF Marco Adinolfi DIS April Newport News 24/29
25 Outline 1 Introduction 2 An overview of the LHCb experiment 3 Λ/Λ and Λ/KS ratios 4 p/p ratio 5 Conclusions Marco Adinolfi DIS April Newport News 25/29
26 Conclusions LHCb delivers excellent results in Minimum Bias physics in the forward region and at low p T. Preliminary results compared to current models indicate: Harder p T distributions. Higher baryon number transport. Lower baryon/meson suppression. Improved analysis with better estimate of calibrations and systematics in the queue for internal approval. Publication will immediately follow. Results will provide invaluable help in the development of QCD models and in the retuning of the LHCb Monte Carlo. More in the pipeline. Don t miss Jesko Merkel talk on LHCb strangeness results later in the morning. Marco Adinolfi DIS April Newport News 26/29
27 Backups Marco Adinolfi DIS April Newport News 27/29
28 η coverage at LHC Marco Adinolfi DIS April Newport News 28/29
29 Λ/Λ ratio As expected no dependance on LHCb magnetic field. Marco Adinolfi DIS April Newport News 29/29
Measurements of Particle Production in pp-collisions in the Forward Region at the LHC
2011 Europhysics Conference on High-Energy Physics, Grenoble Measurements of Particle Production in pp-collisions in the Forward Region at the LHC Thomas Ruf for the LHCb collaboration Introduction Particle
V 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...
Luminosity measurement and K-short production with first LHCb data. Sophie Redford University of Oxford for the LHCb collaboration
Luminosity measurement and K-short production with first LHCb data Sophie Redford University of Oxford for the LHCb collaboration 1 Introduction Measurement of the prompt Ks production Using data collected
Review 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
Status of the LHCb experiment and minimum bias physics
Status of the LHCb experiment and minimum bias physics Sebastian Bachman Heidelberg University on behalf of the LHCb collaboration 6/19/2010 Sebastian Bachmann 1 Beauty and Charm at the LHC LHC is a factory
LHCb physics with the first pb 1
LHCb physics with the first 10-20 pb 1 Raluca Mureşan EPFL on behalf of the LHCb collaboration R. Mureşan, LHCb physics with the first 10-20 pb 1 p.1/30 Outline LHCb detector First data analysis and rapidity
LHCb status. Raluca Mureşan EPFL. p.1/20
LHCb status Raluca Mureşan EPFL p.1/20 Disclaimer too many things going on 8 meetings to attend per week, days with over 100 e-mails very dinamic evolution - the most of the plots shown in a meeting are
Early physics with the LHCb detector
XXVIII PHYSICS IN COLLISION - Perugia, Italy, June, 25-28, 2008 Early physics with the LHCb detector Dirk Wiedner CERN for the LHCb collaboration 27 June 2008 Dirk Wiedner at PIC2008 Perugia 1 Outline
V0 cross-section measurement at LHCb. RIVET analysis module for Z boson decay to di-electron
V0 cross-section measurement at LHCb. RIVET analysis module for Z boson decay to di-electron Outline of the presentation: 1. Introduction to LHCb physics and LHCb detector 2. RIVET plug-in for Z e+e- channel
Results and Prospects for Ion Physics at LHCb
Discovery Physics at the LHC Kruger 2016 Results and Prospects for Ion Physics at LHCb Patrick Robbe, LAL Orsay, 7 December 2016, For the LHCb Collaboration Outline The LHCb experiment Results in ppb and
LHCb: Reoptimized Detector & Tracking Performance
LHCb: Reoptimized Detector & Tracking Performance Gerhard Raven NIKHEF and VU, Amsterdam Representing the LHCb collaboration Beauty 2003, Carnegie Mellon University, Oct 14-18, Pittsburgh, PA, USA 1 The
LHCb results in proton-nucleus collisions at the LHC
LHCb results in proton-nucleus collisions at the LHC PANIC August 28, 2014 on behalf of the LHCb collaboration Outline Motivation LHCb Detector Beam configurations Measurements J/Ψ production Υ production
Heavy Hadron Production and Spectroscopy at ATLAS
Heavy Hadron Production and Spectroscopy at ALAS Carlo Schiavi on behalf of the ALAS Collaboration INFN Sezione di Genova ALAS has studied heavy flavor production and measured the production cross sections
Susanna Costanza. (Università degli Studi di Pavia & INFN Pavia) on behalf of the ALICE Collaboration
(Università degli Studi di Pavia & INFN Pavia) on behalf of the ALICE Collaboration 102 Congresso della Società Italiana di Fisica Padova, 26-30 settembre 2016 Outline Heavy flavour physics in ALICE The
D 0 -D 0 mixing and CP violation at LHC
D -D mixing and CP violation at LHC Patrick Spradlin on behalf of the LHCb collaboration University of O Particle P 5 th International Workshop on the CKM Unitarity Triangle Rome, Italy 9-13 September
Results on heavy ion collisions at LHCb
Results on heavy ion collisions at LHCb Marcin Kucharczyk on behalf of LHCb collaboration HNI Krakow 28th Rencontres de Blois 29.05-03.06 2016 Outline LHCb - general purpose forward experiment Physics
(pp! bbx) at 7 and 13 TeV
Measurement of (pp! bbx) at 7 and 13 TeV Matthew Kelsey on behalf of the LHCb collaboration 1 Motivation Measurements of charm and beauty cross-sections are some of the most interesting QCD studies that
LHCb status. Marta Calvi. for the LHCb Collaboration. 103 rd LHCC meeting University Milano-Bicocca and INFN
LHCb status 103 rd LHCC meeting 22.09.2010 Marta Calvi University Milano-Bicocca and INFN for the LHCb Collaboration Data taking 3.2 pb -1 on tape eff ~91% Stable data taking, high efficiency in all systems,
October 4, :33 ws-rv9x6 Book Title main page 1. Chapter 1. Measurement of Minimum Bias Observables with ATLAS
October 4, 2018 3:33 ws-rv9x6 Book Title main page 1 Chapter 1 Measurement of Minimum Bias Observables with ATLAS arxiv:1706.06151v2 [hep-ex] 23 Jun 2017 Jiri Kvita Joint Laboratory for Optics, Palacky
First Run-2 results from ALICE
First Run-2 results from ALICE Goethe University Frankfurt & GSI on behalf of the ALICE Collaboration XLV International Symposium on Multiparticle Dynamics Wildbad Kreuth, 4-9 Oct 2015 1 Outline Introduction
Quarkonium LHCb
Quarkonium Studies @ LHCb Giacomo Graziani (INFN Firenze) on behalf of the LHCb Collaboration December 5th, 2008 QWG08, Nara G. Graziani slide 1 QWG08 The LHCb Experiment dedicated to CP violation and
LHCb Semileptonic Asymmetry
CERN E-mail: mika.vesterinen@cern.ch A recent measurement of the CP violating flavour specific asymmetry in B s decays, a s sl, is presented. This measurement is based on a data sample corresponding to
FYST17 Lecture 6 LHC Physics II
FYST17 Lecture 6 LHC Physics II 1 Today & Monday The LHC accelerator Challenges The experiments (mainly CMS and ATLAS) Important variables Preparations Soft physics EWK physics Some recent results Focus
HQL Virginia Tech. Bob Hirosky for the D0 Collaboration. Bob Hirosky, UNIVERSITY of VIRGINIA. 26May, 2016
Bs CP-odd lifetime in Bs J/ψf0 and Afb for baryons at D0 2016 Virginia Tech Bob Hirosky for the D0 Collaboration 1 Tevatron Data D0 continues a rich physics program analyzing ~10fb-1 of recorded data from
Muon reconstruction performance in ATLAS at Run-2
2 Muon reconstruction performance in ATLAS at Run-2 Hannah Herde on behalf of the ATLAS Collaboration Brandeis University (US) E-mail: hannah.herde@cern.ch ATL-PHYS-PROC-205-2 5 October 205 The ATLAS muon
Lavinia-Elena Giubega
Lavinia-Elena Giubega *on behalf of LHCb collaboration Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania Beach 2018 - XIII International Conference on Beauty,
Charged Particle Production in Pb+Pb Collisions at snn=2.76 TeV with the ATLAS detector at the LHC
Charged Particle Production in Pb+Pb Collisions at snn=2.76 TeV with the ATLAS detector at the LHC Dominik Derendarz for the ATLAS Collaboration Institute of Nuclear Physics PAN, Kraków, Poland Introduction
FYST17 Lecture 6 LHC Physics II
FYST17 Lecture 6 LHC Physics II 1 Today, (tomorrow) & Next week The LHC accelerator Challenges The experiments (mainly CMS and ATLAS) Important variables Preparations Soft physics minímum bias, underlying
Relative branching ratio measurements of charmless B ± decays to three hadrons
LHCb-CONF-011-059 November 10, 011 Relative branching ratio measurements of charmless B ± decays to three hadrons The LHCb Collaboration 1 LHCb-CONF-011-059 10/11/011 Abstract With an integrated luminosity
(Towards) First Physics with LHCb
(Towards) First Physics with LHCb Beam induced splash in LHCb Physics at LHC 2008 Split, Croatia, 29 Sep - 4 Oct 2008 Introduction Detector overview and performance Extracting physics from (very) first
Some 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
Mini-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
Particle Identification of the LHCb detector
HCP 2005 Particle Identification of the LHCb detector Ann.Van.Lysebetten@cern.ch on behalf of the LHCb collaboration CERN 5th July 2005 The LHCb experiment : introduction precision measurements of CP violation
R. Mureşan. University of Oxford On behalf of LHCb Collaboration. Prepared for the CERN Theory Institute "Flavour as a Window to New Physics at LHC"
May 8 CERN Theory Institute Charm Physics at LHCb R. Mureşan University of Oxford On behalf of LHCb Collaboration Prepared for the CERN Theory Institute "Flavour as a Window to New Physics at LHC" R. Mureşan
ALICE results on identified particle spectra in p-pb collisions
Workshop on proton-nucleus collisions at the LHC ALICE results on identified particle spectra in p-pb collisions for the ALICE Collaboration Museo Storico della Fisica e Centro Studi e Ricerche Enrico
Status of the LHCb RICH and hadron particle identification
Status of the LHCb RICH and hadron particle identification M. Adinolfi University of Oxford On behalf of the LHCb collaboration (with many thanks to all the people whose presentations have been n hacked)
Recent results from the LHCb experiment
Recent results from the LHCb experiment University of Cincinnati On behalf of the LHCb collaboration Brief intro to LHCb The Large Hadron Collider (LHC) proton-proton collisions NCTS Wksp. DM 2017, Shoufeng,
QCD 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
First Run II results from ALICE
EPJ Web of Conferences will be set by the publisher DOI: will be set by the publisher c Owned by the authors, published by EDP Sciences, 06 First Run II results from ALICE Alberica oia,,a on behalf of
Prospects for quarkonium studies at LHCb. «Quarkonium Production at the LHC» workshop
Prospects for quarkonium studies at LHCb «Quarkonium Production at the LHC» workshop Patrick Robbe, LAL Orsay, 19 Feb 2010 LHCb Detector Forward Spectrometer Geometry, with angular acceptance 15
Exotic spectroscopy and quarkonia at LHCb
Exotic spectroscopy and quarkonia at LHCb Bo Liu 1 on behalf of the LHCb Collaboration Department of Engineering Physics, Tsinghua Unversity, 100084 Beijing, CHINA and Laboratoire de l Accelerateur Lineaire,
SOFT 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
Flavour Physics at hadron machines
Flavour Physics at hadron machines KIAS Phenomenology Workshop Seoul, Korea, 17-19 November 2011 T. Nakada EPFL-LPHE Lausanne, Switzerland B physics, started with hadron machine First discovery of b-quark
Physics with Tau Lepton Final States in ATLAS. Felix Friedrich on behalf of the ATLAS Collaboration
Physics with Tau Lepton Final States in ATLAS on behalf of the ATLAS Collaboration HEP 2012, Valparaiso (Chile), 06.01.2012 The Tau Lepton m τ = 1.8 GeV, heaviest lepton cτ = 87 μm, short lifetime hadronic
Overview of LHCb Experiment
Overview of Physics @ LHCb Experiment Yuanning Gao, Tsinghua University Representing the LHCb Collaboration Detector performance CKM triangles Other topics (selected) Conclusions A very selective review!
Results 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
Observation of the rare B 0 s µ + µ decay
Observation of the rare B 0 s µ + µ decay The combined analysis of CMS and LHCb data Luke Pritchett April 22, 2016 Table of Contents Theory and Overview Detectors Event selection Analysis Flavor physics
PERFORMANCE OF THE ATLAS MUON TRIGGER IN RUN 2
PERFORMANCE OF THE ATLAS MUON TRIGGER IN RUN 2 M.M. Morgenstern On behalf of the ATLAS collaboration Nikhef, National institute for subatomic physics, Amsterdam, The Netherlands E-mail: a marcus.matthias.morgenstern@cern.ch
ATLAS: Status and First Results
ATLAS: Status and First Results, University of Sheffield, on behalf of the ATLAS Collaboration 1 Overview of the ATLAS detector Status of the experiment Performance and physics results in the first six
Flavor Physics beyond the SM. FCNC Processes in the SM
Flavor Physics beyond the SM 48 FCNC Processes in the SM A SM ( B ΔF = ΔF = 1 W q W b b u, c, t q b u, c, t q 0 q B ) ~ ( V V 0 q ) tb tq g m 16π m t W A SM ( b q) = V V tb tq g 16π m m t W FCNC in SM
PoS(IHEP-LHC-2011)008
in pp collisions at the LHC Sergei Lobanov Joint Institute for Nuclear Research, Dubna, Russian Federation E-mail: Sergey.Lobanov@cern.ch Artem Maevskiy M.V. Lomonosov Moscow State University, Russian
Heavy flavour spectroscopy at LHCb
paolo.gandini@cern.ch Heavy flavour spectroscopy at LHCb Paolo Gandini University of Oxford on behalf of the LHCb collaboration Moriond QCD, La Thuile Outline Several new results produced for winter conferences
Flavour Tagging at LHCb
Flavour Tagging at LHCb Miriam Calvo Gomez, on behalf of the LHCb Collaboration Enginyeria La Salle Universitat Ramon Llull 822 Barcelona, SPAIN miriam.calvo@cern.ch 1 Introduction LHCb is a heavy flavour
PoS(ICHEP2012)238. Search for B 0 s µ + µ and other exclusive B decays with the ATLAS detector. Paolo Iengo
Search for B s µ + µ and other exclusive B decays with the ATLAS detector. On behalf of the ATLAS Collaboration INFN Naples, Italy E-mail: paolo.iengo@cern.ch The ATLAS experiment, collecting data in pp
Jet reconstruction in LHCb searching for Higgs-like particles
Jet reconstruction in LHCb searching for Higgs-like particles Alessandro Camboni (on behalf of LHCb Collaboration) DISCRETE'08 Valencia Dec 12th, 2008 Motivation Jet reconstruction is important for searches
Recent 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
Measurement 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
AGH-UST University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
Central Exclusive Production at LHCb AGH-UST University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland E-mail: brachwal@agh.edu.pl The LHCb detector, with its
Hadron Spectroscopy at LHCb. Hadron Spectroscopy. Results from LHCb. Lucio Anderlini (INFN Firenze) on behalf of the LHCb Collaboration
Hadron Spectroscopy Results from LHCb Lucio Anderlini on behalf of the LHCb Collaboration 1 Spectroscopy: no longer stamp collection In the last 15 years many new states not fitting the expectations for
NA62: Ultra-Rare Kaon Decays
NA62: Ultra-Rare Kaon Decays Phil Rubin George Mason University For the NA62 Collaboration November 10, 2011 The primary goal of the experiment is to reconstruct more than 100 K + π + ν ν events, over
The LHCb detector. Eddy Jans (Nikhef) on behalf of the LHCb collaboration
The LHCb detector Eddy Jans (Nikhef) on behalf of the LHCb collaboration design of sub-detectors, trigger and DAQ performance: resolutions and PID-properties commissioning with cosmics and beam induced
PoS(ICHEP2012)300. Electroweak boson production at LHCb
Physik-Institut der Universität Zürich, Switzerland. E-mail: jonathan.anderson@cern.ch The electroweak boson production cross-sections have been measured in the forward region using s = 7 TeV proton-proton
LHCb: first results and prospects for the run
Journal of Physics: Conference Series : first results and prospects for the 1-11 run To cite this article: J P Palacios and the Lhcb Collaboration 1 J. Phys.: Conf. Ser. 9 1 View the article online for
Measurement of CP violation in B J/ψK 0 S. decays. Frank Meier TU Dortmund. XXIX Rencontres de Physique de la Vallée d Aoste March 1 7, 2015
Measurement of CP violation in B J/ψK S decays at LHCb Frank Meier TU Dortmund on behalf of the LHCb Collaboration XXIX Rencontres de Physique de la Vallée d Aoste March 1 7, 215 CP violation in the SM
Searches for exotica at LHCb
Searches for exotica at LHCb Lorenzo Sestini Università di Padova e INFN LHCb Implications Workshop, Geneve-Cern, 3-11-2015 Searches for exotics LHCb can be complementary to ATLAS and CMS in the search
Open-charm and J/ψ production at the ALICE experiment
Open-charm and J/ψ production at the ALICE experiment Pietro Cortese Università del Piemonte Orientale and INFN Alessandria, Italy on behalf of the ALICE Collaboration Purdue University, Jan. 6, 2011 Pietro
LHCb overview. Francesco Bossù on behalf of the LHCb collaboration. Laboratoire de l Accélérateur Linéaire, Orsay
LHCb overview Francesco Bossù on behalf of the LHCb collaboration Laboratoire de l Accélérateur Linéaire, Orsay Rencontres QGP-France 16 Étretat, -13 Oct 16 LHCb detector ˆ Single arm spectrometer, fully
A search for heavy and long-lived staus in the LHCb detector at s = 7 and 8 TeV
A search for heavy and long-lived staus in the LHCb detector at s = 7 and 8 TeV Trần Minh Tâm minh-tam.tran@epfl.ch on behalf of the LHCb Collaboration LHCb-CONF-2014-001 EPFL, Laboratoire de Physique
Testing the m-e universality with ±
Testing the m-e universality with ± ± K l n decays Venelin Kozhuharov University of Sofia St. Kl. Ohridski / JINR Dubna Neutrino Oscilation Workshop 2006 on behalf of the NA48/2 collaboration Cambridge,
Identification of the Higgs boson produced in association with top quark pairs in proton-proton
Identification of the Higgs boson produced in association with top quark pairs in proton-proton collision: an analysis of the final state containing three leptons with the ATLAS detector Valentina Vecchio,
LHCb: From the detector to the first physics results
LHCb: From the detector to the first physics results Olivier Callot Laboratoire de l Accélérateur Linéaire, IN2P3/CNRS and Université Paris XI, Orsay, France On behalf of the LHCb collaboration In this
Massimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste
Massimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste 16 th International Conference in Quantum Chromo-Dynamics (QCD 2012) Montpellier (2-6 July 2012) Outline Resonances in pp collisions:
Physics potential of ATLAS upgrades at HL-LHC
M.Testa on behalf of the ATLAS Collaboration INFN LNF, Italy E-mail: marianna.testa@lnf.infn.it ATL-PHYS-PROC-207-50 22 September 207 The High Luminosity-Large Hadron Collider (HL-LHC) is expected to start
Transverse 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
Neutral 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
QCD, diffrac,on and forward physics at the LHC
QCD, diffrac,on and forward physics at the LHC Andrew Pilkington IPPP Durham and Manchester Presented at Diffrac.on 2010, Otranto, Italy, September 2010 Overview 1) Introduc,on to LHC in 2010 2) Review
LHCb Overview. Barbara Storaci on behalf of the LHCb Collaboration
LHCb Overview Barbara Storaci on behalf of the LHCb Collaboration CERN Council, December 14 th, 2012 Overview Introduction Collaboration Type of physics considered Detector Detector performances Selection
Recent Heavy Flavors results from Tevatron. Aleksei Popov (Institute for High Energy Physics, Protvino) on behalf of the CDF and DØ Collaborations
Recent Heavy Flavors results from Tevatron Aleksei Popov (Institute for High Energy Physics, Protvino) on behalf of the CDF and DØ Collaborations March 27, 2017 Outline Tevatron, CDF and DØ Confirmation
Feasibility of a cross-section measurement for J/ψ->ee with the ATLAS detector
Feasibility of a cross-section measurement for J/ψ->ee with the ATLAS detector ATLAS Geneva physics meeting Andrée Robichaud-Véronneau Outline Motivation Theoretical background for J/ψ hadroproduction
PoS(KAON)049. Testing the µ e universality with K ± l ± ν decays
University of Sofia "St. Kl. Ohridski" E-mail: Venelin.Kozhuharov@cern.ch The ratio R K = Γ(K ± e ± ν)/γ(k ± µ ± ν) provides a very powerful probe for the weak interactions structure. This ratio of decay
Future prospects for the measurement of direct photons at the LHC
Future prospects for the measurement of direct photons at the LHC David Joffe on behalf of the and CMS Collaborations Southern Methodist University Department of Physics, 75275 Dallas, Texas, USA DOI:
LHCb results and prospects
LHCb results and prospects M. Witek (IFJ PAN Cracow, Poland) On behalf of the LHCb Collaboration Miami 2011 Conference Fort Lauderdale, Florida 800 physicists 15 countries 54 institutes CERN LHC Large
Jet 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
The LHCb Flavour Physics Experiment
The LHCb Flavour Physics Experiment University of Glasgow AGH, University of Science and Technology, Krakow, Poland, 4 March 2010 Outline Motivation LHC @ CERN @ Geneva The LHCb experiment The 2010 LHC(b)
Two Early Exotic searches with dijet events at ATLAS
ATL-PHYS-PROC-2011-022 01/06/2011 Two Early Exotic searches with dijet events at ATLAS University of Toronto, Department of Physics E-mail: rrezvani@physics.utoronto.ca This document summarises two exotic
Charged Particle Production in Proton-Proton Collisions at s = 13 TeV with ALICE at the LHC
Charged Particle Production in Proton-Proton Collisions at s = 13 TeV with ALICE at the LHC Prabhakar Palni Institute of Particle Physics, Central China Normal University, Wuhan MPI@LHC 2015, ICTP, Trieste,
Double Parton Scattering in CMS. Deniz SUNAR CERCI Adiyaman University On behalf of the CMS Collaboration Low-x th June 2017 Bari, Italy
Double Parton Scattering in CMS Deniz SUNAR CERCI Adiyaman University On behalf of the CMS Collaboration Low-x 2017 17th June 2017 Bari, Italy Outline Introduction to DPS DPS measurements with CMS 2b +
Diffraction 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,
The majorityofevents with a leading proton with 0:6 < x L < 0:9. do not have a visible large pseudorapidity gap in the interval
Conclusions DIS events with a leading baryon show the same dependence on x y Q 2 W and track multiplicity as `normal' DIS. The majorityofevents with a leading proton with 0:6 < x L < 0:9 do not have a
Performance of muon and tau identification at ATLAS
ATL-PHYS-PROC-22-3 22/2/22 Performance of muon and tau identification at ATLAS On behalf of the ATLAS Collaboration University of Oregon E-mail: mansoora.shamim@cern.ch Charged leptons play an important
Measurement of charged particle spectra in pp collisions at CMS
Measurement of arged particle spectra in pp collisions at CMS for the CMS Collaboration Eötvös Loránd University, Budapest, Hungary E-mail: krisztian.krajczar@cern. We present the plans of the CMS collaboration
PANIC August 28, Katharina Müller on behalf of the LHCb collaboration
Measurements with electroweak bosons at LHCb PANIC August 28, 2014 on behalf of the LHCb collaboration Outline LHCb detector Measurements with electroweak bosons Motivation Z production Z plus jets, Z
Massimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste
Massimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste 2 nd European Nuclear Physics Conference (EuNPC 2012) Bucharest (17-21 September 2012) Outline Resonances in pp collisions:
W, Z and top production measurements at LHCb
1 W, Z and top production measurements at LHCb Lorenzo Sestini, on behalf of the LHCb collaboration. Universitá di Padova e INFN E-mail: lorenzo.sestini@cern.ch The LHCb experiment offers a complementary
Atlas 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
Heavy ion physics at LHCb
J/ψ in ppb, 8 ev D in ppb, 5 ev Λ+ c in ppb, 5 ev Heavy flavour with SMOG data Conclusion Heavy ion physics at E milie Maurice on behalf of the collaboration ICFNP 25th August 217, Kolymbari, Creta August
Muon commissioning and Exclusive B production at CMS with the first LHC data
Muon commissioning and Exclusive B production at CMS with the first LHC data Silvia Taroni INFN Milano Bicocca On the behalf of the CMS collaboration Outline Introduction CMS detector Muon detection in
Recent CMS results on heavy quarks and hadrons. Alice Bean Univ. of Kansas for the CMS Collaboration
Recent CMS results on heavy quarks and hadrons Alice Bean Univ. of Kansas for the CMS Collaboration July 25, 2013 Outline CMS at the Large Hadron Collider Cross section measurements Search for state decaying
Measurement of muon tagged open heavy flavor production in Pb+Pb collisions at 2.76 TeV with ATLAS
Measurement of muon tagged open heavy flavor production in Pb+Pb collisions at 2.76 TeV with Dennis V. Perepelitsa Columbia University for the Collaboration Quark Matter 2012 Parallel 7A Washington, D.C.,
Measurements on hadron production in proton-proton collisions with the ATLAS detector
AL-PHYS-PROC-7-6 7 November 7 Measurements on hadron production in proton-proton collisions with the ALAS detector Comenius University (SK) E-mail: tibor.zenis@cern.ch Studies of correlated hadron production