Physics with Hadron Beams at COMPASS

Size: px
Start display at page:

Download "Physics with Hadron Beams at COMPASS"

Transcription

1 Physics with Hadron Beams at COMPASS Bernhard Ketzer Technische Universität München MAMI and Beyond 2009 International Workshop on Hadron Structure and Spectroscopy March 2009

2 The Goal Understand hadrons from the dynamics of ofquarks and gluons non-perturbative regime of QCD Models: QM, bag, flux tube,... Effective theories: χpt,... Lattice-QCD

3 Experimental Tools Deep Inelastic Lepton Scattering and and related related hard hard e.m. e.m. processes processes Spectroscopy Processes at at low low Q2 Q 2 Nucleon Structure Helicity Transversity GPDs QCD Bound States Mass spectrum Gluonic excitations Multi-quark systems Hadron Structure at Low Energies Polarizabilities Chiral anomaly 2 λ = 1 Q

4 Experimental Tools Deep Inelastic Lepton Scattering and and related related hard hard e.m. e.m. processes processes Spectroscopy Processes at at low low Q2 Q 2 Nucleon Structure Helicity Transversity GPDs QCD Bound States Mass spectrum Gluonic excitations Multi-quark systems Hadron Structure at Low Energies Polarizabilities Chiral anomaly 2 λ = 1 Q

5 COMPASS at CERN COmmon Muon and and Proton Apparatus for for Structure and and Spectroscopy LHC LHC SPS SPS p up up to to GeV GeV secondary hadrons (π, (π, K, K,...):...): /s /s tertiary μ (polarized): /s /s

6 The COMPASS Experiment Two-stage spectrometer large angular acceptance broad kinematical range ~ channels > TB/year MuonWall SM2 E/HCAL Beam Target E/HCAL SM1 RICH [hep-ex/ , NIM NIMA A 577, 577, (2007)] (2007)] MuonWall 50 m Dipole magnets Tracking detectors RICH El.-mag. calorimeter Hadronic calorimeter Muon identification

7 The COMPASS Experiment Two-stage spectrometer large angular acceptance broad kinematical range ~ channels > TB/year MuonWall SM2 E/HCAL E/HCAL SM1 50 m Beam Target RICH [hep-ex/ , NIM NIMA A 577, 577, (2007)] (2007)] MuonWall Data taking periods: : GeV/c μ : 2 weeks GeV/c π : GeV/c μ : GeV/c π - -

8 The COMPASS Experiment Two-stage spectrometer large angular acceptance broad kinematical range ~ channels > TB/year MuonWall SM2 E/HCAL E/HCAL SM1 50 m Beam Target RICH [hep-ex/ , NIM NIMA A 577, 577, (2007)] (2007)] MuonWall Data taking periods: : GeV/c μ : 2 weeks GeV/c π : GeV/c μ : GeV/c π - -

9 Experimental Tools Deep Inelastic Lepton Scattering and and related related hard hard e.m. e.m. processes processes Spectroscopy Processes at at low low Q2 Q 2 Nucleon Structure Helicity Transversity GPDs QCD Bound States Mass spectrum Gluonic excitations Multi-quark systems Hadron Structure at Low Energies Polarizabilities Chiral anomaly 2 λ = 1 Q

10 Meson Spectroscopy = ( qq) 0 ( qq)( qq) ( qq) 8 g Hybrids gg Glueballs Quark model: bound state of qq Quantum numbers: I G (J PC ) P=(-1) l+1, C=(-1) l+s, G=(-1) I+l+s QCD: other color-neutral configurations with same quantum numbers mixing Decoupling only only possible for for narrow states vanishing leading qq qqterm exotic J PC PC :: 0,0,1,2,...

11 Glueballs Quenched L-QCD prediction Lightest glueballs: M ~ 1.7GeV/ c M ~ 2.4GeV/ c PC ( J PC ( J = 0 = ) ) Experimental candidate: f 0 (1500) (Crystal Barrel, WA102) J PC =0 ++ mixing with isoscalar mesons! [WA102, [WA102, Phys. Phys. Lett. Lett. B479, B479, (2000) (2000) Events / 0.08 GeV COMPASS [Y. Chen et al., Phys. Rev. D 73, (2006)] M(ηη) (GeV)

12 Hybrids Light meson sector exotics J PC =1 + : π 1 (1400) (VES, E852, Crystal Barrel) π 1 (1600) (E852, VES) still controversial... R BR B Events / 0.04 GeV/c 2 M(3π) (GeV/c 2 ) [S.U. [S.U. Chung Chung et et al., al., PRD PRD 65, 65, (2002)] (2002)] [A.R. [A.R. Dzierba Dzierba et et al., al., PRD PRD 73, 73, (2006)] (2006)] COMPASS

13 Hadron Reactions at COMPASS Two Two production mechanisms studied in in parallel using proton, pion and andkaon projectiles Central production Diffractive dissociation Rapidity gap between p slow, h fast, X Beam particle looses ~10% of its energy Particles at large angles from X decays Possible source of glueballs (DPE) Forward kinematics Need to separate particles at very small angles Study of J PC -exotic mesons

14 Diffractive Reactions at COMPASS Example: π + Pb πππ + + 4πvertex in Pb target Exclusivity target stays intact Pb p a p c Momentum transfer t Q 2 = ( p ) a pc 2 Diffraction on on Pb Pb nuclei Diffraction on on nucleons

15 Invariant Mass of 3π System COMPASS: p π =190 π GeV/c 4M 4Mevents in in 3 days (full (full t t range) 450k events in in0.1<t <1.0 GeV GeV 2 2 /c /c 2 2 BNL852: p π =18 π =18 GeV/c 250k events π 1 (1600) 1

16 Invariant Mass of 3π System Acceptance

17 PWA Technique high s: t-channel Reggeon exchange Reflectivity basis in G-J frame ε = η of Regge trajectory Isobar model 1. Mass-independent PWA of angular distributions in 40 MeV mass bins indep 1 N r ε ε ε σ ( τ)= T ψ ( τ) ψ ( τ ) dτ ε = 1 r= 1 i ir i 42 partial waves i=j PC M ε [...]L [...]=isobar (ππ) S, f 0 (980), ρ(770), f 2 (1270), ρ 3 (1690) i 2 2

18 PWA Technique high s: t-channel Reggeon exchange Reflectivity basis in G-J frame ε = η of Regge trajectory Isobar model 1. Mass-independent PWA of angular distributions in 40 MeV mass bins 2. Mass-dependent χ 2 fit to results of step 1 6 waves Parameterized by BW Coherent background for some waves

19 Waves used in PWA

20 Major Waves a 1 (1260) 1 π 2 (1670) 2 a 2 (1320) 2

21 π 1 (1600) BW parameters for π 1 (1600) M ( ) = ± GeV/ c 2 ( ) Γ = ± GeV / c 2 Leakage negligible

22 π 1 (1600) BW parameters for π 1 (1600) M ( ) = ± GeV/ c 2 ( ) Γ = ± GeV / c 2 Leakage negligible

23 Summary of Waves Publication being prepared, to be submitted to PRL

24 COMPASS in 2008

25 COMPASS in 2008

26 COMPASS in 2008 RPD Ring A RPD Ring B β β

27 COMPASS in 2008

28 COMPASS in 2008 PixelGEM detectors: low mass high rates: ~10 5 mm -2 s -1 resolution: ~120 μm

29 COMPASS in 2008 E g >2.0 GeV and E pi0 > 10 GeV N evt hmp2 Entries Mean RMS χ 2 / ndf / 30 N( π 0 ) 1.912e+04 ± 410 Mass ± σ ± p e+04 ± 89 p e+04 ± 612 p e+05 ± 2445 p e+05 ± ΔE=8 MeV (GeV/c ) M gg

30 COMPASS in 2008 Trigger components: Diffractive Trigger=BT RPD!Veto Beam trigger RPD full/empty=14/1 Cedars Veto: Hodo Sandwich BK Mainz Counter Forward Hodoscope

31 Statistics in GeV/c hadron beam Target: 40cm liquid hydrogen Diffractive dissociation: 96% π -, 3.5% K -, 0.5% p π - p π 1 (1600)p, π 1 (1600) 3π: events exp. Very Preliminary

32 190 GeV/c hadron beam Target: 40cm liquid hydrogen Statistics in 2008 Diffractive dissociation: 96% π -, 3.5% K -, 0.5% p π - p π 1 (1600)p, π 1 (1600) 3π: events exp. Central production: 75% p, 25% π + π + p π + f 0 (1500)p, Early f 0 (1500) ηη 4γ: 1400 events exp. North Area stop stop due due to to LHC LHC problems f 0 (1500) 4π : events exp. only a few days of testing... to be done in 2009

33 Experimental Tools Deep Inelastic Lepton Scattering and and related related hard hard e.m. e.m. processes processes Spectroscopy Processes at at low low Q2 Q 2 Nucleon Structure Helicity Transversity GPDs QCD Bound States Mass spectrum Gluonic excitations Multi-quark systems Hadron Structure at Low Energies Polarizabilities Chiral anomaly 2 λ = 1 Q

34 χpt χpt (2-loop): α π Pion Polarizabilities Describe response to to external e.m. e.m. fields stiffness of of system electric polarizability d = α E magnetic polarizability μ = β H = (2.9 ± 0.5) 10 4 fm 3 Experiments: pion pion Compton scattering π γ π γ π γγ β π = ( 2.8 ± 0.5) 10 4 fm 3 PLUTO DM1 DM2 Mark II Lebedev Mami A2 Serpukhov

35 χpt χpt (2-loop): α π Pion Polarizabilities Describe response to to external e.m. e.m. fields stiffness of of system electric polarizability d = α E magnetic polarizability μ = β H = (2.9 ± 0.5) 10 4 fm 3 Experiments: pion pion Compton scattering π γ π γ π γγ β π = ( 2.8 ± 0.5) 10 4 fm 3 PLUTO DM1 DM2 Mark II Lebedev Mami A2 Serpukhov COMPASS

36 Cross Section Ratio 3 2 N ω σ mπ ω R( ω)= = 1 + βπ, απ + βπ = 0 N ( ω) dσ 2 α 1 ω Prim exp( ) d γπ 3 Thomson MC γπ ( ) muon beam R(ω) for different values of α π (β π ) Cross check with μ beam

37 Q 2 Distributions from Pilot Run ( ωθ) d σ α Ζ Q Q 2 dσ min 2 γπ, = F 2 4 Z ( Q ) d d dcos dcos Q ω θ πω Q θ

38 Z 2 Dependence of Cross Section ( ωθ) d σ α Ζ Q Q 2 dσ min 2 γπ, = F 2 4 Z ( Q ) d d dcos dcos Q ω θ πω Q θ

39 2009 Primakoff Measurement Major improvements: Detector performance: ECAL, μid Optimized target: 58 Ni Radiative corrections Beyond Weizsäcker-Williams approach Interference with diffractive amplitudes Suppression of π π 0 background MC description of setup Prospects (4 weeks): σ stat ~ fm 3 σ sys ~ fm 3 independent extaction of α π, β π with σ stat ~ fm 3 α π (s) first measurement of α K

40 Primakoff Reactions with Neutral Mesons Primakoff π 0 production Chiral Perturbation Theory Prediction: F 3π (0)=9.7±0.1 GeV -3 Experiment (Serpukhov): F 3π (0)=12.9±0.9±0.5 GeV -3 F 3π π F (0) (0) =, f ± = ( ± 0.4) MeV π πα f 2 ± π

41 Primakoff Reactions with Neutral Mesons Primakoff π 0 production Chiral Perturbation Theory Prediction: F 3π (0)=9.7±0.1 GeV -3 Experiment (Serpukhov): F 3π (0)=12.9±0.9±0.5 GeV -3 F 3π π F (0) (0) =, f ± = ( ± 0.4) MeV π πα f 2 ± π Further reactions channels studied in COMPASS: π Z π 0 0 Z π π π Z π Z η

42 Conclusions COMPASS started physics program with hadron beams in 2008 High angular resolution for charged particles Final states with neutral and charged particles Observation of resonances in different production / decay channels Light meson spectroscopy with lh2 target Experiment upgrade Diffractive reactions: 10 BNL E852 statistics Central production: 10 WA102 statistics Analysis chain (PWA) ready and tested on MC / real data Primakoff reactions: polarizabilities of π and K, chiral anomaly New physics results from 2004 π pilot run PWA for π + π - π - (high t ): strong signal in exotic 1 -+ wave at 1.6 GeV/c 2 PWA for low t ongoing PWA for π + π + π π π started: higher masses, b 1 π, f 1 π decay channels

Hadron Spectroscopy at COMPASS

Hadron Spectroscopy at COMPASS Hadron Spectroscopy at Overview and Analysis Methods Boris Grube for the Collaboration Physik-Department E18 Technische Universität München, Garching, Germany Future Directions in Spectroscopy Analysis

More information

Hadron Spectrospopy & Primakoff Reactions at COMPASS

Hadron Spectrospopy & Primakoff Reactions at COMPASS Hadron Spectrospopy & Primakoff Reactions at COMPASS Jan Friedrich TU München International Workshop on Hadron Structure and Spectroscopy Paris, 5. April 2011 E 1 8 COMPASS Outline Investigation of the

More information

Status / Hadron Spectroscopy at COMPASS

Status / Hadron Spectroscopy at COMPASS Status / Hadron Spectroscopy at COMPASS Johannes Bernhard 1 Institut für Kernphysik Mainz January 22 nd 2010 1 johannes.bernhard@cern.ch Outline 1 Introduction 2 Recoil Proton Detector 3 Trigger 4 Analysis

More information

Tests of Chiral Perturbation Theory in Primakoff Reactions at COMPASS

Tests of Chiral Perturbation Theory in Primakoff Reactions at COMPASS Tests of Chiral Perturbation Theory in Primakoff Reactions at COMPASS Jan Friedrich Physik Department Technische Universität München for the COMPASS collaboration SPIN-PRAHA-010 July 0 supported by: Maier-Leibnitz-Labor

More information

Spectroscopy Results from COMPASS. Jan Friedrich. Physik-Department, TU München on behalf of the COMPASS collaboration

Spectroscopy Results from COMPASS. Jan Friedrich. Physik-Department, TU München on behalf of the COMPASS collaboration Spectroscopy Results from COMPASS Jan Friedrich Physik-Department, TU München on behalf of the COMPASS collaboration 11th European Research Conference on "Electromagnetic Interactions with Nucleons and

More information

Recent Results on Spectroscopy from COMPASS

Recent Results on Spectroscopy from COMPASS Recent Results on Spectroscopy from COMPASS Boris Grube Physik-Department E18 Technische Universität München, Garching, Germany Hadron 15 16. September 15, Newport News, VA E COMPASS 1 8 The COMPASS Experiment

More information

Identification of Central Production in the π + π π + π Channel at COMPASS

Identification of Central Production in the π + π π + π Channel at COMPASS Identification of Central Production in the π + π π + π Channel at COMPASS ASI-Spin-Praha-009 Johannes Bernhard for the COMPASS collaboration Institut für Kernphysik Mainz July 8 th Outline 1 Introduction

More information

Overview and Status of Measurements of F 3π at COMPASS

Overview and Status of Measurements of F 3π at COMPASS g-2 workshop Mainz: Overview and Status of Measurements of F 3π at COMPASS D. Steffen on behalf of the COMPASS collaboration 19.06.2018 sponsored by: 2 Dominik Steffen g-2 workshop Mainz 19.06.2018 Contents

More information

arxiv: v2 [hep-ex] 12 Feb 2014

arxiv: v2 [hep-ex] 12 Feb 2014 arxiv:141.476v2 [hep-ex] 12 Feb 214 on behalf of the COMPASS collaboration Technische Universität München E-mail: stefan.huber@cern.ch The value of the pion polarizability is predicted with high precision

More information

arxiv: v1 [hep-ex] 31 Dec 2014

arxiv: v1 [hep-ex] 31 Dec 2014 The Journal s name will be set by the publisher DOI: will be set by the publisher c Owned by the authors, published by EDP Sciences, 5 arxiv:5.v [hep-ex] Dec 4 Highlights from Compass in hadron spectroscopy

More information

Forefront Issues in Meson Spectroscopy

Forefront Issues in Meson Spectroscopy Forefront Issues in Meson Spectroscopy Curtis A. Meyer Carnegie Mellon University 1 Outline of Talk Introduction Meson Spectroscopy Glueballs Expectations Experimental Data Interpretation Hybrid Mesons

More information

Search for Gluonic Excitations with GlueX at Jefferson Lab

Search for Gluonic Excitations with GlueX at Jefferson Lab Search for Gluonic Excitations with GlueX at Jefferson Lab Volker Credé Florida State University Tallahassee, FL The Structure and Dynamics of Hadrons Hirschegg, 01/19/2007 Outline 1 2 3 4 Outline 1 2

More information

Kärnfysikermötet, Umeå 1-2 November 2005 Agnes Lundborg, Uppsala Universitet

Kärnfysikermötet, Umeå 1-2 November 2005 Agnes Lundborg, Uppsala Universitet Charmonium in e + e and pp Kärnfysikermötet, Umeå 1-2 November 2005 Agnes Lundborg, Uppsala Universitet Raise a whole bunch of Questions Charmonium is a good tool for QCD studies: Why we want to understand

More information

PANDA. antiproton Annihilation at DArmstadt

PANDA. antiproton Annihilation at DArmstadt antiproton Annihilation at DArmstadt Physics programme Quark confinement: Charmonium spectroscopy Excited gluons: Exotic hybrid mesons & glueballs Nucleon spin puzzle: transverse quark spin distribution

More information

Analysis of diffractive dissociation of exclusive. in the high energetic hadron beam of the COMPASS-experiment

Analysis of diffractive dissociation of exclusive. in the high energetic hadron beam of the COMPASS-experiment Analysis of diffractive dissociation of exclusive K π`π events in the high energetic hadron beam of the -experiment Prometeusz K. Jasinski on behalf of the Collaboration Institut für Kernphysik Mainz Johann-Joachim-Becher-Weg

More information

Overview of Light-Hadron Spectroscopy and Exotics

Overview of Light-Hadron Spectroscopy and Exotics Overview of Light-Hadron Spectroscopy and Eotics Stefan Wallner Institute for Hadronic Structure and Fundamental Symmetries - Technical University of Munich March 19, 018 HIEPA 018 E COMPASS 1 8 Introduction

More information

Light-Meson Spectroscopy at Jefferson Lab

Light-Meson Spectroscopy at Jefferson Lab Light-Meson Spectroscopy at Jefferson Lab Volker Credé Florida State University, Tallahassee, Florida PANDA Collaboration Meeting Uppsala, Sweden 06/10/2015 Outline Introduction 1 Introduction 2 Detector

More information

The Exotic η π Wave in 190 GeV π p η π p at COMPASS

The Exotic η π Wave in 190 GeV π p η π p at COMPASS The Exotic η π Wave in 19 GeV π p η π p at COMPASS Tobias Schlüter for the COMPASS collaboration Ludwig-Maximilians-Universität München June 16, 11 πη in diffractive scattering Possible quantum numbers

More information

Hadron spectroscopy in photo- and hadroproduction at COMPASS p. 1/13

Hadron spectroscopy in photo- and hadroproduction at COMPASS p. 1/13 Hadron spectroscopy in photo- and hadroproduction at p. 1/13 Hadron spectroscopy in photo- and hadroproduction at Jan Friedrich Physik Department, TU München on behalf of the collaboration Outline The

More information

Science of Confinement QED QCD

Science of Confinement QED QCD 1 Science of Confinement The spectroscopy of light mesons led to the quark model and QCD: mesons are quark-antiquark color singlet bound states held together by gluons. The gluons of QCD carry color charge

More information

Experimental Program of the Future COMPASS-II Experiment at CERN

Experimental Program of the Future COMPASS-II Experiment at CERN Experimental Program of the Future COMPASS-II Experiment at CERN Luís Silva LIP Lisbon lsilva@lip.pt 24 Aug 2012 On behalf of the COMPASS Collaboration co-financed by THE COMPASS EXPERIMENT Common Muon

More information

Baryon Spectroscopy in COMPASS p p p f π + π p s p p p f K + K p s. Alex Austregesilo for the COMPASS Collaboration

Baryon Spectroscopy in COMPASS p p p f π + π p s p p p f K + K p s. Alex Austregesilo for the COMPASS Collaboration Baryon Spectroscopy in COMPASS p p p π + π p s p p p K + K p s Alex Austregesilo or the COMPASS Collaboration XIV International Conerence on Hadron Spectroscopy München, June 7 E 8 Supported by Outline

More information

The COMPASS experiment at CERN: hadron spectroscopy and open charm results

The COMPASS experiment at CERN: hadron spectroscopy and open charm results COMPASS The COMPASS experiment at CERN: hadron spectroscopy and open charm results Oleg Kouznetsov JINR, Dubna On behalf of the COMPASS Collaboration BEACH2012 Wichita COmmon Muon and Proton Apparatus

More information

Vector 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 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 information

arxiv:hep-ph/ v1 7 Aug 2000

arxiv:hep-ph/ v1 7 Aug 2000 7 August 2000 Resonance production in central pp collisions at the CERN Omega Spectrometer arxiv:hep-ph/0008053v1 7 Aug 2000 A. Kirk School of Physics and Astronomy, University of Birmingham, Birmingham,

More information

GENERALIZED PARTON DISTRIBUTIONS

GENERALIZED PARTON DISTRIBUTIONS Exploring fundamental questions of NUCLEON STRUCTURE with GENERALIZED PARTON DISTRIBUTIONS Florian Herrmann 16.9.2012 Corfu Summer School LHC COMPASS SPS Versatile facility for hadron structure studies

More information

International Workshop on Heavy Quarkonium Oct. 2007, DESY Hamburg. Prospects for Panda. Charmonium Spectroscopy

International Workshop on Heavy Quarkonium Oct. 2007, DESY Hamburg. Prospects for Panda. Charmonium Spectroscopy International Workshop on Heavy Quarkonium 17 20 Oct. 2007, DESY Hamburg Prospects for Panda Charmonium Spectroscopy M. Pelizäus (Ruhr Universität Bochum) for the Panda Collaboration 1 FAIR accelerator

More information

GlueX Capabilities for Nuclear Photoproduction

GlueX Capabilities for Nuclear Photoproduction GlueX Capabilities for Nuclear Photoproduction A. Somov, Jefferson Lab Nuclear Photoproduction with GlueX April 28 29, 2016 Physics Topics with Nuclear Targets Considered for GlueX Photoproduction of vector

More information

Meson Spectroscopy Methods, Measurements & Machines

Meson Spectroscopy Methods, Measurements & Machines Meson Spectroscopy Methods, Measurements & Machines Aug. 31 Sep. 4, Groningen Klaus Götzen GSI Darmstadt Mesons are they really interesting? Look at the American Physical Society Highlights 2013! [http://physics.aps.org/articles/v6/139]...

More information

Meson spectroscopy at CLAS and CLAS12: the present and the future. Raffaella De Vita INFN Genova for the CLAS Collaboration

Meson spectroscopy at CLAS and CLAS12: the present and the future. Raffaella De Vita INFN Genova for the CLAS Collaboration Meson spectroscopy at CLAS and CLAS12: the present and the future Raffaella De Vita INFN Genova for the CLAS Collaboration Why hadron spectroscopy? QCD is responsible for most of the visible mass in the

More information

A Program of Hadron Spectroscopy

A Program of Hadron Spectroscopy A Program of Hadron Spectroscopy with STAR S. U. Chung Department, Brookhaven National Laboratory, Upton, NY 11973 http://cern.ch/suchung/ http://www.phy.bnl.gov/ e852/reviews.html S. U. Chung / BNL p.1

More information

BABAR Results on Hadronic Cross Sections with Initial State Radiation (ISR)

BABAR Results on Hadronic Cross Sections with Initial State Radiation (ISR) 1 International Workshop on e+e- Collisions from Phi to Psi (PHIPSI08) Laboratori Nazionali di Frascati April 7-10, 2008 Results on Hadronic Cross Sections with Initial State Radiation (ISR) Johannes Gutenberg-Universität

More information

The π 0 Lifetime Experiment and Future Plans at JLab

The π 0 Lifetime Experiment and Future Plans at JLab The π 0 Lifetime Experiment and Future Plans at JLab North Carolina A&T State University, Greensboro, NC, USA (for the PrimEx Collaboration at JLab) Outline The PrimEx Experiment at JLab: Physics Motivation

More information

Exclusive Central π+π- Production in Proton Antiproton Collisions at the CDF

Exclusive 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 information

Recent results from the STAR experiment on Vector Meson production in ultra peripheral AuAu collisions at RHIC.

Recent results from the STAR experiment on Vector Meson production in ultra peripheral AuAu collisions at RHIC. Recent results from the STAR experiment on Vector Meson production in ultra peripheral AuAu collisions at RHIC. Leszek Adamczyk On behalf of STAR Collaboration September 7, 2016 RHIC AA: Au+Au, Cu+Cu,

More information

Hall-D Update. Eric Pooser. Joint Hall A/C Summer Collaboration Meeting 07/18/2015

Hall-D Update. Eric Pooser. Joint Hall A/C Summer Collaboration Meeting 07/18/2015 1 Hall-D Update Joint Hall A/C Summer Collaboration Meeting 07/18/2015 Current Hall-D Physics Program 2 Slide Courtesy of E. Chudakov Hybrid & Exotic Hybrid Mesons 3 Conventional light mesons (π, K, η,

More information

PrimEx Experiments and the Prospects of Rare η Decays at GlueX

PrimEx Experiments and the Prospects of Rare η Decays at GlueX PrimEx Experiments and the Prospects of Rare η Decays at GlueX Outline Liping Gan University of North Carolina Wilmington Challenges in Physics Precision tests of continuous symmetries of confinement QCD

More information

Plans to measure J/ψ photoproduction on the proton with CLAS12

Plans to measure J/ψ photoproduction on the proton with CLAS12 Plans to measure J/ψ photoproduction on the proton with CLAS12 Pawel Nadel-Turonski Jefferson Lab Nuclear Photoproduction with GlueX, April 28-29, 2016, JLab Outline Introduction J/ψ on the proton in CLAS12

More information

Recent results on spectroscopy from

Recent results on spectroscopy from Recent results on spectroscopy from LIU Beijiang Institute of High Energy Physics, Beijing (for BESIII collaboration) XVI International Conference on Hadron Spectroscopy, Sept. 13-18, 2015, Newport News,

More information

CLEO Results From Υ Decays

CLEO Results From Υ Decays CLEO Results From Υ Decays V. Credé 1 2 1 Cornell University, Ithaca, NY 2 now at Florida State University Tallahassee, FL Hadron 05 Outline 1 Introduction The Υ System CLEO III Detector CLEO III Υ Data

More information

M.Battaglieri Istituto Nazionale di Fisica Nucleare Genova - Italy. A Forward Photon Tagging Facility for CLAS12

M.Battaglieri Istituto Nazionale di Fisica Nucleare Genova - Italy. A Forward Photon Tagging Facility for CLAS12 A Forward Photon Tagging Facility for CLAS12 M.Battaglieri Istituto Nazionale di Fisica Nucleare Genova - Italy 1) From CEBAF at 6 GeV 2) From CEBAF at 6 GeV to CEBAF at 12 GeV add Hall D (and beam line)

More information

Recent Results on J/ψ, ψ and ψ Decays from BESII

Recent Results on J/ψ, ψ and ψ Decays from BESII Recent Results on J/ψ, ψ and ψ Decays from BESII Xiaoyan SHEN (Representing BES Collaboration) Institute of High Energy Physics, Beijing shenxy@ihep.ac.cn Oct. 17 20, 2007, QWG5, DESY, Germany Outline

More information

Charmonium decays at the BESIII experiment

Charmonium decays at the BESIII experiment Charmonium decays at the BESIII experiment Hu Jifeng for BESIII Collaboration Graduate University of Chinese Academy of Science Beijing, China Jun. 13-17, 2011, Hadron2011, Muchen, Germany 6/13/2011 HU

More information

COMPASS Drell-Yan. Michela Chiosso, University of Torino and INFN. TMD ECT* Workshop April 2016

COMPASS Drell-Yan. Michela Chiosso, University of Torino and INFN. TMD ECT* Workshop April 2016 COMPASS Drell-Yan Michela Chiosso, University of Torino and INFN TMD ECT* Workshop 11-15 April 2016 Outline Single polarized Drell-Yan at COMPASS DY vs SIDIS at COMPASS Experimental setup Spin-dependent

More information

Hadron Propagation and Color Transparency at 12 GeV

Hadron Propagation and Color Transparency at 12 GeV Hadron Propagation and Color Transparency at 12 GeV Dipangkar Dutta Mississippi State University Hall C Users Meeting Jan 21-22, 2016 Hall C meeting Jan 2016 D. Dutta Hadron propagation in nuclear medium

More information

Monte Carlo Simulations for PANDA

Monte Carlo Simulations for PANDA Monte Carlo Simulations for PANDA Diego Bettoni Istituto Nazionale di Fisica Nucleare, Ferrara International Workshop on Heavy Quarkonia 2008 Nara, Japan, 3 December 2008 Outline Introduction The PANDA

More information

Study of Excited Baryons with the Crystal-Barrel Detector at ELSA

Study of Excited Baryons with the Crystal-Barrel Detector at ELSA Study of Excited Baryons with the Crystal-Barrel Detector at ELSA V. Credé FSU, Tallahassee, Florida NSF Review Florida State University, 11/15/2007 Outline 1 Introduction 2 Proposal: Determination of

More information

Hadron structure with photon and antiproton induced reactions - QCD in the non-perturbative range -

Hadron structure with photon and antiproton induced reactions - QCD in the non-perturbative range - Hadron structure with photon and antiproton induced reactions - QCD in the non-perturbative range - Introduction Present: Photoproduction of Mesons at ELSA and MAMI CB-ELSA/TAPS Experiment Crystal Ball/TAPS

More information

Electromagnetic and spin polarisabilities from lattice QCD

Electromagnetic and spin polarisabilities from lattice QCD Lattice Hadron Physics 2006 Electromagnetic and spin polarisabilities from lattice QCD William Detmold [ WD, BC Tiburzi and A Walker-Loud, PRD73, 114505] I: How to extract EM and spin polarisabilities

More information

Recent Progress on Charmonium Decays at BESIII

Recent Progress on Charmonium Decays at BESIII Recent Progress on Charmonium Decays at BESIII Xiao-Rui Lu (on behalf of the BESIII Collaboration) Physics Department Graduate University of Chinese Academy of Sciences Beijing, 0049, China xiaorui@gucas.ac.cn

More information

AGH-UST University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland

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

More information

Physics 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 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 information

Λ and Λ polarization at COMPASS

Λ and Λ polarization at COMPASS and polarization at COMASS onghee Kang Johannes Gutenberg Universität Mainz On behalf of the COMASS collaboration IS XVIII International Workshop on eep Inelastic Scattering Firenze, 1 st April Outline

More information

Hadron Spectroscopy Lecture 1 Introduction and Motivation

Hadron Spectroscopy Lecture 1 Introduction and Motivation Hadron Spectroscopy Lecture 1 Introduction and Motivation National Nuclear Physics Summer School at MIT Matthew Shepherd Indiana University Outline 1. Overview and Motivation 1.1.Uniue features of QCD

More information

Recent Results from the BESIII Experiment. Ryan Mitchell Indiana University Miami 2011 December 17, 2011

Recent Results from the BESIII Experiment. Ryan Mitchell Indiana University Miami 2011 December 17, 2011 Recent Results from the BESIII Experiment Ryan Mitchell Indiana University Miami 11 December 17, 11 1 The primary goal of BESIII: Use e + e collisions to produce charmonium states, then use their properties

More information

Study of Strange Quark in the Nucleon with Neutrino Scattering

Study of Strange Quark in the Nucleon with Neutrino Scattering July 28, 2004 NuFact 04, Osaka Study of Strange Quark in the Nucleon with Neutrino Scattering T.-A. Shibata Tokyo Institute of Technology Contents: 3. Physics Motivation --- Quark Structure of the Nucleon

More information

The Search for Exotic Mesons in Photoproduction. Diane Schott

The Search for Exotic Mesons in Photoproduction. Diane Schott The Search for Exotic Mesons in Photoproduction Diane Schott Purpose The constituent quark model gives initial set of mesons formed by qq pairs. It is described by simplest QCD bound state. QCD allows

More information

Measurement of the e + e - π 0 γ cross section at SND

Measurement of the e + e - π 0 γ cross section at SND Measurement of the e + e - π 0 γ cross section at SND L.Kardapoltsev (for SND collaboration) Budker Institute of Nuclear Physics, Novosibirsk state university PhiPsi 2017, Mainz, Germany June 2017 Outline

More information

Exclusive Vector Meson Production and Inclusive K 0

Exclusive Vector Meson Production and Inclusive K 0 Exclusive Vector Meson Production and Inclusive K 0 S K0 S Final State in DIS at HERA Photon003, Frascati 07-11/04 McGill University For the H1 and Zeus Collaboration Outline: Exclusive vector meson production

More information

2 Meson Spectroscopy at LEAR with the Crystal Barrel. In collaboration with: Academy of Science (Budapest); Universities of Bochum, Bonn,

2 Meson Spectroscopy at LEAR with the Crystal Barrel. In collaboration with: Academy of Science (Budapest); Universities of Bochum, Bonn, 8 Meson Spectroscopy at LEAR with the Crystal Barrel 2 Meson Spectroscopy at LEAR with the Crystal Barrel C. Amsler, M. Buchler, P. Giarritta, M. Heinzelmann, F. Ould-Saada, C. Pietra, C. Regenfus and

More information

Measurement of the π 0 Lifetime: QCD Axial Anomaly and Chiral Corrections. INT Sept, A.M. Bernstein MIT

Measurement of the π 0 Lifetime: QCD Axial Anomaly and Chiral Corrections. INT Sept, A.M. Bernstein MIT Measurement of the π 0 Lifetime: QCD Axial Anomaly and Chiral Corrections INT Sept, 2009 A.M. Bernstein MIT spontaneous chiral symmetry breaking pions π 0 γ γ : axial anomaly, chiral corrections ~m d -m

More information

Search for K + π + νν decay at NA62 experiment. Viacheslav Duk, University of Birmingham for the NA62 collaboration

Search for K + π + νν decay at NA62 experiment. Viacheslav Duk, University of Birmingham for the NA62 collaboration Search for K + π + νν decay at NA62 experiment Viacheslav Duk, University of Birmingham for the NA62 collaboration Durham, 04-06.09.2017 1 Outlook 1. Motivation 2. NA62 experiment 3. Event selection 4.

More information

Single Spin Asymmetries on proton at COMPASS

Single Spin Asymmetries on proton at COMPASS Single Spin Asymmetries on proton at COMPASS Stefano Levorato on behalf of COMPASS collaboration Outline: Transverse spin physics The COMPASS experiment 2007 Transverse Proton run Data statistics Asymmetries

More information

Baryon Resonance Determination using LQCD. Robert Edwards Jefferson Lab. Baryons 2013

Baryon Resonance Determination using LQCD. Robert Edwards Jefferson Lab. Baryons 2013 Baryon Resonance Determination using LQCD Robert Edwards Jefferson Lab Baryons 2013 Where are the Missing Baryon Resonances? What are collective modes? Is there freezing of degrees of freedom? What is

More information

Charmonium(-like) and Bottomonium(-like) States Results from Belle and BaBar

Charmonium(-like) and Bottomonium(-like) States Results from Belle and BaBar Charmonium(-like) and Bottomonium(-like) States Results from Belle and BaBar Mostly X(3872). Jens Sören Lange Justus-Liebig-Universität Gießen MENU10 12 th International Conference on Meson-Nucleon Physics

More information

The π 0 Lifetime: Experimental Probe of. Dustin E. McNulty MIT/UMass for the PrimEx Collaboration April 16, 2008

The π 0 Lifetime: Experimental Probe of. Dustin E. McNulty MIT/UMass for the PrimEx Collaboration April 16, 2008 The π Lifetime: Experimental Probe of the QCD Axial Anomaly Dustin E. McNulty MIT/UMass for the mcnulty@jlab.org April 16, 28 The π Lifetime: Experimental Probe of the QCD Axial Anomaly Outline Physics

More information

LEPS Physics HOTTA, Tomoaki (RCNP, Osaka University) on behalf of the LEPS&LEPS2 collaboration

LEPS Physics HOTTA, Tomoaki (RCNP, Osaka University) on behalf of the LEPS&LEPS2 collaboration LCS2014 International Workshop LEPS Physics HOTTA, Tomoaki (RCNP, Osaka University) on behalf of the LEPS&LEPS2 collaboration Outline Overview of the LEPS&LEPS2 beamlines Recent results from LEPS Search

More information

The η-meson Decay Program at WASA-at-COSY

The η-meson Decay Program at WASA-at-COSY Mitglied der Helmholtz-Gemeinschaft The η-meson Decay Program at WASA-at-COSY 31.08.2015 Daniel Lersch for the WASA-at-COSY collaboration Institute for Nuclear Physics The η-meson! " " " # #, (" + " -

More information

Electroweak Physics at the Tevatron

Electroweak Physics at the Tevatron Electroweak Physics at the Tevatron Adam Lyon / Fermilab for the DØ and CDF collaborations 15 th Topical Conference on Hadron Collider Physics June 2004 Outline Importance Methodology Single Boson Measurements

More information

Muoproduction of exotic charmonia at COMPASS

Muoproduction of exotic charmonia at COMPASS Joint Institute for Nuclear Research, Dubna, Russia E-mail: avg@jinr.ru Exotic charmonium-like states have been targeted by various experiments in the last years, but their nature still is unknown. Photo-(muo)production

More information

QCD 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 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 information

PoS(CD12)117. Precision Measurement of η γγ Decay Width via the Primakoff Effect. Liping Gan

PoS(CD12)117. Precision Measurement of η γγ Decay Width via the Primakoff Effect. Liping Gan Precision Measurement of via the Primakoff Effect University of North Carolina Wilmington, NC, USA E-mail: ganl@uncw.edu A precision measurement of the η γγ decay width via the Primakoff effect is underway

More information

Recent XYZ results from Belle

Recent XYZ results from Belle Recent XYZ results from Belle Changzheng Yuan IHEP, Beijing Mini-workshop on XYZ, IHEP, Beijing May 11, 2015 The Belle experiment SCC RF(HER) Belle detector World record: L = 2.1 x 10 34 /cm 2 /sec ARES(LER)

More information

Light Meson Decays at BESIII

Light Meson Decays at BESIII Light Meson Decays at BESIII Liqing QIN (for the Collaboration ) Shandong University XVI International Conference on Hadron Spectroscopy Sep. 13-18, 2015, Newport News, VA OUTLINE n Introduction n Recent

More information

HQL Virginia Tech. Bob Hirosky for the D0 Collaboration. Bob Hirosky, UNIVERSITY of VIRGINIA. 26May, 2016

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

More information

ISR physics at BABAR

ISR physics at BABAR SLAC-PUB-499 ISR physics at BABAR S.Serednyakov, Budker Institute of Nuclear Physics, Novosibirsk, Russia Abstract A method of measuring e+e- annihilation cross sections at low energy s < 5 GeV, using

More information

Gluon Polarisation COMPASS

Gluon Polarisation COMPASS Gluon Polarisation Measurements @ COMPASS LIP Lisbon lsilva@lip.pt Outline: Brief Motivation High pt analysis Open Charm (LO and NLO) analyses G/G results Summary and Conclusion On behalf of the COMPASS

More information

Hadron Physics with Real and Virtual Photons at JLab

Hadron Physics with Real and Virtual Photons at JLab Hadron Physics with Real and Virtual Photons at JLab Elton S. Smith Jefferson Lab Virtual photons shape of the nucleon Elastic scattering (form factors) Inelastic scattering (uark distributions) Exclusive

More information

Timelike Compton Scattering

Timelike Compton Scattering Timelike Compton Scattering Tanja Horn In collaboration with: Y. Illieva, F.J. Klein, P. Nadel-Turonski, R. Paremuzyan, S. Stepanyan 12 th Int. Conference on Meson-Nucleon Physics and the Structure of

More information

Photo-production of vector mesons in 2.76 TeV ultra-peripheral Pb+Pb collisions at ALICE. Daniel Tapia Takaki. On behalf of the ALICE Collaboration

Photo-production of vector mesons in 2.76 TeV ultra-peripheral Pb+Pb collisions at ALICE. Daniel Tapia Takaki. On behalf of the ALICE Collaboration Photo-production of vector mesons in 2.76 TeV ultra-peripheral Pb+Pb collisions at ALICE On behalf of the ALICE Collaboration Rencontres du Viet Nam: 14th Workshop on Elastic and Diffractive Scattering

More information

Physics at Hadron Colliders

Physics at Hadron Colliders Physics at Hadron Colliders Part 2 Standard Model Physics Test of Quantum Chromodynamics - Jet production - W/Z production - Production of Top quarks Precision measurements -W mass - Top-quark mass QCD

More information

Dedicated Arrays: MEDEA GDR studies (E γ = MeV) Highly excited CN E*~ MeV, 4 T 8 MeV

Dedicated Arrays: MEDEA GDR studies (E γ = MeV) Highly excited CN E*~ MeV, 4 T 8 MeV Dedicated Arrays: MEDEA GDR studies (E γ = 10-25 MeV) Highly excited CN E*~ 250-350 MeV, 4 T 8 MeV γ-ray spectrum intermediate energy region 10 MeV/A E beam 100 MeV/A - large variety of emitted particles

More information

Likelihood Methods for Beam Particle Identification at the COMPASS Experiment

Likelihood Methods for Beam Particle Identification at the COMPASS Experiment Likelihood Methods for Beam Particle Identification at the Experiment Tobias Weisrock for the Collaboration Graduate School Symmetry Breaking Johannes Gutenberg-Universität Mainz SPIN-Praha-22 July 7,22

More information

Measuring Form Factors and Structure Functions With CLAS

Measuring Form Factors and Structure Functions With CLAS Measuring Form Factors and Structure Functions With CLAS Jerry Gilfoyle for the CLAS Collaboration Physics Department, University of Richmond, Virginia Outline: 1. Jefferson Lab and the CLAS Detector..

More information

Searches for Leptonic Decays of the B-meson at BaBar

Searches for Leptonic Decays of the B-meson at BaBar Searches for Leptonic Decays of the B-meson at BaBar Stephen Jacob Sekula (MIT) on behalf of the BaBar collaboration Presented at Frontiers in Contemporary Physics III Vanderbilt University May 22-28,

More information

Helicity: Experimental Status. Matthias Grosse Perdekamp, University of Illinois

Helicity: Experimental Status. Matthias Grosse Perdekamp, University of Illinois Helicity: Experimental Status Matthias Grosse Perdekamp, University of Illinois Content o The Experimental Effort o Quark and Sea Quark Helicity è DIS, SIDIS, pp è new FFs for global analysis è results

More information

Search for heavy neutrinos in kaon decays

Search for heavy neutrinos in kaon decays Search for heavy neutrinos in kaon decays L. Littenberg (work mainly done by A.T.Shaikhiev INR RAS) HQL-2016 Outline Motivation Previous heavy neutrino searches Experiment BNL-E949 Selection criteria Efficiency

More information

CENTRAL EXCLUSIVE PRODUCTION AT LHCB. G. Veneziano Experimental Particle Physics seminar, University of Oxford, 17/01/2017

CENTRAL EXCLUSIVE PRODUCTION AT LHCB. G. Veneziano Experimental Particle Physics seminar, University of Oxford, 17/01/2017 CENTRAL EXCLUSIVE PRODUCTION AT LHCB G. Veneziano Experimental Particle Physics seminar, University of Oxford, 17/01/2017 1 INTRODUCTION CEP is the process in which particles are produced by colourless

More information

Overview of recent HERMES results

Overview of recent HERMES results Journal of Physics: Conference Series PAPER OPEN ACCESS Overview of recent HERMES results To cite this article: Hrachya Marukyan and 216 J. Phys.: Conf. Ser. 678 1238 View the article online for updates

More information

New Limits on Heavy Neutrino from NA62

New Limits on Heavy Neutrino from NA62 CERN E-mail: michal.koval@cern.ch The NA6 experiment at CERN collected large samples of charged kaon decays in flight with a minimum bias trigger configuration in 7 and in 15 using a completely new detector

More information

Threshold photoproduction of J/y with the GlueX experiment. Lubomir Pentchev Jefferson Lab for the GlueX collaboration

Threshold photoproduction of J/y with the GlueX experiment. Lubomir Pentchev Jefferson Lab for the GlueX collaboration Threshold photoproduction of J/y with the GlueX experiment Lubomir Pentchev Jefferson Lab for the GlueX collaboration 7 th Workshop of the APS Topical Group on Hadron Physics, Washington, DC February 1-3

More information

Searches for Exotics in Upsilon Decays in BABAR

Searches for Exotics in Upsilon Decays in BABAR Searches for Exotics in Upsilon Decays in BABAR Yury Kolomensky UC Berkeley/LBNL For the BABAR Collaboration 14th Lomonosov Conference on Elementary Particle Physics August 24, 2009, Moscow Light Higgs

More information

Spin physics at COMPASS p. 1/43

Spin physics at COMPASS p. 1/43 Spin physics at Jan Friedrich Physik Department, TU München on behalf of the collaboration Spin physics at p. 1/43 In R. Hofstadter s footsteps... 5 years ago: At SLAC, few-hundred-mev electron scattering

More information

Mesons beyond the quark-antiquark picture: glueballs, hybrids, tetraquarks - part 1 - Francesco Giacosa

Mesons beyond the quark-antiquark picture: glueballs, hybrids, tetraquarks - part 1 - Francesco Giacosa Mesons beyond the quark-antiquark picture: glueballs, hybrids, tetraquarks - part 1-55 Cracow School of Theoretical Physics 20 28/6/2015, Zakopane, Poland Outline The Lagrangian of QCD and its symmetries

More information

Opportunities in low x physics at a future Electron-Ion Collider (EIC) facility

Opportunities in low x physics at a future Electron-Ion Collider (EIC) facility 1 Opportunities in low x physics at a future Electron-Ion Collider (EIC) facility Motivation Quantum Chromo Dynamics Proton=uud Visible Universe Galaxies, stars, people, Silent Partners: Protons & Neutrons

More information

ALICE results on vector meson photoproduction in ultraperipheral p-pb and Pb-Pb collisions

ALICE results on vector meson photoproduction in ultraperipheral p-pb and Pb-Pb collisions ALICE results on vector meson photoproduction in ultraperipheral p-pb and Pb-Pb collisions Evgeny Kryshen (Petersburg Nuclear Physics Institute, Russia) for the ALICE collaboration INT workshop INT-17-65W

More information

Review of Standard Tau Decays from B Factories

Review of Standard Tau Decays from B Factories Review of Standard Tau Decays from B Factories Fabrizio Salvatore, RHUL Tau mass measurement Tau decays to strange particles: - Measurement of V us using τ s decays - τ KKπν τ, KKKν τ branching fractions

More information

Heavy Hadron Production and Spectroscopy at ATLAS

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

More information

A Precision Measurement of Elastic e+p Beam Normal Single Spin Asymmetry and Other Transverse Spin Measurements from Qweak

A Precision Measurement of Elastic e+p Beam Normal Single Spin Asymmetry and Other Transverse Spin Measurements from Qweak A Precision Measurement of Elastic e+p Beam Normal Single Spin Asymmetry and Other Transverse Spin Measurements from Qweak Buddhini P. Waidyawansa For the Qweak Collaboration JLab Users Group Meeting June

More information

Measurements with Polarized Hadrons

Measurements with Polarized Hadrons Aug 15, 003 Lepton-Photon 003 Measurements with Polarized Hadrons T.-A. Shibata Tokyo Institute of Technology Contents: Introduction: Spin of Proton Polarized Deep Inelastic Lepton-Nucleon Scattering 1.

More information