DVCS with CLAS. Elton S. Smith. Jefferson Lab. Conference on Intersections of Particle and Nuclear Physics New York, Elton S.
|
|
- Hope Washington
- 5 years ago
- Views:
Transcription
1 DVCS with CLAS Elton S. Smith Jefferson Lab Conference on Intersections of Particle and Nuclear Physics New York, 2003 Elton S. Smith 1
2 Deeply Virtual Compton Scattering Inclusive Scattering Forward Compton Scattering θ = 0 γ γ Deeply Virtual Compton Scattering (DVCS) γ ξ t Probes the internal nucleon dynamics at the amplitude level: H(x, ξ, t),. 2
3 GPDs Contain Much More Information than DIS DIS only measures a cut at ξ=0 Quark distribution q(x) Antiquark distribution q(x) qq distribution 3
4 Beam Spin Asymmetry DVCS Bethe-Heitler e e γ γ e e e e + γ 2 p GPD s p p p p p dx B dσ = dydtdφ 8π e 3 α x 3 Q 2 B y ε ( ) 2 2 * * T + T + T T + T T BH DVCS BH DVCS DVCS BH Beam Spin Asymmetry ~ I m ( T DVCS ) T BH 4
5 Kinematics e p e p γ γ θ γ φ γ θ γ 5
6 DVCS Single-Spin Asymmetry CLAS Collaboration PRL 87, (2001) Curves from Belitsky et al NP B629 (2002) 323 Measure interference between DVCS-BH A N N + N + N = + = αsin φ + βsin 2φ α± ± β± ± 6
7 DVCS Single-spin 4.8 GeV α A N N + N + N = + = αsin φ + βsin 2φ 7
8 CLAS Kinematical coverage in Q 2, t, and x B!"#$%$&'( ()*+%, Integrated Luminosity = 2.6x10 40 cm Q 2 (GeV 2 ) 4 GeV 1 1 x -t (GeV 2 )
9 Goal Analysis of 5.7 GeV data Select a sample of events which are highly enriched with the DVCS reaction ep epγ Use this sample of events to extract the kinematic dependences of the beam spin asymmetry Procedure MC description of exclusive γ and π 0 s Use MC (and data) for guidance on how to determine our sample Estimate relative contributions of photons and π 0 s in all kinematic bins 9
10 Background: ep epπ 0 p γ (γ) γ e γ CLAS Detector MC 10
11 t-distribution of π 0 s: e1-6 data vs MC π 0 MC is applicable at small t and small θ πγ θ πγ θπγ <0.3 θ πγ <0.15 θ πγ <0.1 γ -t (GeV 2 ) 11
12 Angular and energy distribution of MC photons EC Acceptance Energy Cut DVCS γ π 0 π 0 γ s DVCS γ lost Photon Angle Photon Energy (GeV) 12
13 Selection of epγ sample using MC selection Counts DVCS γ π 0 γ s θ γγc θ γ (measured) θ X (predicted) 13
14 e p M x2 distributions in 6 GeV data e p X No γ in calorimeter reconstructed π 0 γ γ 14
15 π 0 contamination in ep sample (0-γ) Reconstructed π 0 γγ epx 0-γ epx 1-γ θ γ*x (rad) 15
16 Samples used for Analysis ep epx 0-γ (Used to extract asymmetry) No photon found in Electromagnetic Calorimeter (EC) θ γ*x < 0.12 radians M X2 < GeV 2 ep epx 1-γ (Used as a check) One photon found in Electromagnetic Calorimeter θγ(predicted) θγ(measured) < 10 mrad ep epπ 0 (Control sample for background) Two photons found in EC and reconstruct to π 0 θ π (predicted) θ π (measured) < 10 mrad 16
17 Methods Asymmetry A N N + + N N = + = α sin φ + β sin 2φ Fit for α and β Moments A LU = sinφ 2 sin φ 17
18 A LU for epx, epγ, epπ 0 DVCS dominates ep epx 0-γ epx 1-γ π 0 γγ θ γ*x (rad) 18
19 DVCS/BH 6 GeV Moments Asymmetry GPD Model A LU < Q 2 < < W < 3.0 < Q 2 > = 2.7 < t > = 0.4 Q 2 = GeV 2 <-t> = 0.4 GeV 2 very preliminary x 19
20 DVCS/BH Q 2 6 GeV Moments GPD Model A LU A LU < x < < x < x = < -W < x = < W < 3.0 <-t> = 0.48 < t > = 0.48 GeV 2 <-t> = 0.48 GeV < t > = very preliminary very preliminary Q Q 2 20
21 DVCS/BH 6 GeV GPD Model Q 2 = GeV 2 x = v e r y p r e l i m i n a r y Q 2 = GeV 2 x = Q 2 = GeV 2 x = Q 2 > 3 GeV 2 x =
22 Summary We have carried out exclusive DVCS measurements with CLAS between 4-6 GeV. At small t: Future: Developed realistic Monte Carlo, including DVCS/BH and π 0 production. At small t, in current CLAS configuration with γ detection at Θ γ,π > 10 o, ep epx(0-γ) allows better isolation of the exclusive process than the detection of epx (1-γ) and with higher statistics. Analysis of larger t kinematics requires more detailed studies. Full corrections for π 0 contamination, systematic studies. Expect factor ~2 more data from run: April - June 2003 Dedicated setup underway for CLAS and in Hall A for DVCS measurements at 6 GeV with full event reconstruction and large kinematic coverage. 22
23 Hall A DVCS at 6 GeV Methods and Goals 23
24 Complete Photon Detection in CLAS.+$$/ (0*1"2 γ γ &'-.π /$."..". 24
Probing Generalized Parton Distributions in Exclusive Processes with CLAS
Probing Generalized Parton Distributions in Exclusive Processes with CLAS Volker D. Burkert Jefferson Lab The nucleon: from structure to dynamics First GPD related results in DVCS and DVMP Experimental
More informationExperimental Overview Generalized Parton Distributions (GPDs)
Experimental Overview Generalized Parton Distributions (GPDs) Latifa Elouadrhiri Jefferson Lab Lattice Hadron Physics July 31 August 3, 2006 Outline Generalized Parton Distributions - a unifying framework
More informationDeeply Virtual Compton JLab
Deeply Virtual Compton Scattering @ JLab Franck Sabatié CEA Saclay For the Hall A and Hall B collaborations Exclusive 07 - JLab May 1 st 007 Introduction Non-dedicated measurements E00-110 experiment in
More informationThe GPD program at Jefferson Lab: recent results and outlook
The GPD program at Jefferson Lab: recent results and outlook Carlos Muñoz Camacho IPN-Orsay, CNRS/INP3 (France) KITPC, Beijing July 17, 1 Carlos Muñoz Camacho (IPN-Orsay) GPDs at JLab KITPC, 1 1 / 3 Outline
More informationDeeply Virtual Compton Scattering on the neutron
Deeply Virtual Compton Scattering on the neutron Malek MAZOUZ For JLab Hall A & DVCS collaborations Physics case n-dvcs experimental setup Analysis method Results and conclusions Exclusive Reactions at
More informationTarget single- and double-spin asymmetries in DVCS off a longitudinal polarised hydrogen target at HERMES
Target single- and double-spin asymmetries in DVCS off a longitudinal polarised hydrogen target at HERMES David Mahon On behalf of the HERMES Collaboration DIS 2010 - Florence, Italy Overview Mahon DIS
More informationNeutron DVCS. Carlos Muñoz Camacho. IPN-Orsay, CNRS/IN2P3 (France)
Neutron DVCS Carlos Muñoz Camacho IPN-Orsay, CNRS/IN2P3 (France) Next generation of nuclear physics with JLab12 and EIC Florida International University February 10 13, 2016 Carlos Muñoz Camacho (IPN-Orsay)
More informationTimelike 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 informationRecent results on DVCS from Hall A at JLab
Recent results on DVCS from Hall A at JLab Carlos Muñoz Camacho IPN-Orsay, CNRS/IN2P3 (France) Spatial and Momentum Tomography of Hadrons and Nuclei INT-17-3 Sep 5, 2017 Carlos Muñoz Camacho (IPN-Orsay)
More informationNeutrons in a Spin: Nucleon Structure at Jefferson Lab
Neutrons in a Spin: Nucleon Structure at Jefferson Lab Daria Sokhan University of Glasgow, UK on behalf of the CLAS Collaboration IoP Nuclear Physics Group Conference, York 8 th April 2013 Nucleon structure
More informationA glimpse of gluons through deeply virtual Compton scattering
A glimpse of gluons through deeply virtual Compton scattering M. Defurne On behalf of the DVCS Hall A collaboration CEA Saclay - IRFU/SPhN June 1 st 017 June 1 st 017 1 / 7 The nucleon: a formidable lab
More informationExclusive Physics with the HERMES Recoil Detector
Exclusive Physics with the HERMES Recoil Detector Erik Etzelmüller on behalf of the HERMES Collaboration!!! workshop on! Exploring Hadron Structure with Tagged Structure Functions! Thomas Jefferson National
More informationGeneralized Parton Distributions and Nucleon Structure
Generalized Parton Distributions and Nucleon Structure Volker D. Burkert Jefferson Lab With pqcd established we have the tool to understand matter at a deeper level. Nobel prize 2004 - D. Gross, D. Politzer,
More informationHall B Physics Program and Upgrade Plan
Hall B Physics Program and Upgrade Plan presented by Volker Burkert and Sebastian Kuhn Outline: Introduction Deeply Virtual Exclusive Processes and GPDs Structure Functions & Semi-Inclusive Processes Equipment
More informationDeeply Virtual Compton Scattering off 4. He: New results and future perspectives
Deeply Virtual Compton Scattering off 4 He: New results and future perspectives M. Hattawy (On behalf of the CLAS collaboration) 2016 JLab Users Group Workshop and Annual Meeting June 20-22, Jefferson
More informationShape and Structure of the Nucleon
Shape and Structure of the Nucleon Volker D. Burkert Jefferson Lab Science & Technology Peer Review June 25-27, 2003 8/7/2003June 25, 2003 Science & Technology Review 1 Outline: From form factors & quark
More informationDeeply Virtual Compton Scattering and Meson Production at JLab/CLAS
Deeply Virtual Compton Scattering and Meson Production at JLab/CLAS Hyon-Suk Jo for the CLAS collaboration IPN Orsay PANIC 2011 M.I.T. Cambridge - July 25, 2011 19th Particles & Nuclei International Conference
More informationSingle and double polarization asymmetries from deeply virtual exclusive π 0 electroproduction
Single and double polarization asymmetries from deeply virtual exclusive π electroproduction University of Connecticut E-mail: kenjo@jlab.org Harut Avakian, Volker Burkert et al. (CLAS collaboration) Jefferson
More informationGENERALIZED 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 informationDeeply Virtual Compton Scattering off 4. He: New results and future perspectives
Deeply Virtual Compton Scattering off 4 He: New results and future perspectives M. Hattawy (On behalf of the CLAS collaboration) Next generation nuclear physics with JLab12 and EIC 10-13 February 2016,
More informationHERMES status and future running
HERMES status and future running Benedikt Zihlmann University of Gent on behalf of the collaboration DESY PRC Mai 24 p.1/18 Access to Transversity Single spin azimuthal asymmetries on a transverse polarized
More informationΔVCS Beam Spin Asymmetries with CLAS:Update
ΔVCS Beam Spin Asymmetries with CLAS:Update Brahim Moreno e p e' Δ γ CLAS collaboration meeting ΔVCS Beam Spin Asymmetries with CLAS: Update ΔVCS analyses reminder Double p 0 background study p p 0 background
More informationSimulation of measured DVCS cross-section on STAR Detector
Simulation of measured DVCS cross-section on STAR Detector XXX October 0, 01 Abstract Cross-section measurements of DVCS process in a proposed electron ion collider (EIC at RHIC are simulated. The acceptance
More informationTCS with transversally polarized target at NPS
TCS with transversally polarized target at NPS Observables Fits of Compton Form Factors Simulations PAC theoretical review in 2015 for LOI Marie Boër NPS collaboration meeting, JLab, Jan 21, 2016. TCS
More informationThe Longitudinal Photon, Transverse Nucleon, Single-Spin Asymmetry in Exclusive Pion Production
The Longitudinal Photon, Transverse Nucleon, Single-Spin Asymmetry in Exclusive Pion Production Garth Huber SoLID Collaboration, Jefferson Lab, May 15, 2015. Complementarity of Different Reactions Deep
More informationProposal submitted to the SPS comittee (May 17,2010)
Proposal for GPD studies at COMPASS E. Bur9n CEA- Saclay Irfu/SPhN On behalf of the COMPASS Collabora9on MENU 2010 College of William & Mary Williamsburg - June 2 nd, 2010 Proposal submitted to the SPS
More informationMeasurements 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 informationExclusive Processes at HERMES
Exclusive Processes at HERMES Arne Vandenbroucke Gent University, Belgium On behalf of the HERMES Collaboration 22nd Winter Workschop on Nuclear Dynamics La Jolla, California, USA March 17th, 26 Outline
More informationStudies of OAM at JLAB
Studies of OAM at JLAB Harut Avakian Jefferson Lab UNM/RBRC Workshop on Parton Angular Momentum, NM, Feb 2005 Introduction Exclusive processes Semi-Inclusive processes Summary * In collaboration with V.Burkert
More informationTHE GPD EXPERIMENTAL PROGRAM AT JEFFERSON LAB. C. Muñoz Camacho 1
Author manuscript, published in "XIX International Baldin Seminar on High Energy Physics Problems, Relativistic Nuclear Physics and Quantum Chromodynamics, Dubna : Russie (8)" THE GPD EXPERIMENTAL PROGRAM
More informationExperimental Studies of Hadron Structure via Generalized Parton Distributions
Experimental Studies of Hadron Structure via Generalized Parton Distributions IPN Orsay E-mail: niccolai@ipno.inp.fr Generalized Parton Distributions (GPDs) provide a unified description of hadronic structure
More informationPlans 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 informationNuclear GPDs and DVCS in Collider kinematics. Vadim Guzey. Theory Center, Jefferson Lab. Outline
Nuclear GPDs and DVCS in Collider kinematics Vadim Guzey Theory Center, Jefferson Lab Introduction Outline Nuclear PDFs Nuclear GPDs Predictions for DVCS Conclusions Introduction e(k ) Deeply Virtual Compton
More informationExperimental 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 informationThe Physics Program of CLAS12
1 The Physics Program of CLAS1 S. Niccolai a, for the CLAS collaboration a Institut de Physique Nucléaire d Orsay, Orsay (France) The experimental program to study nucleon structure at the 1-GeV upgraded
More informationOutline. Generalized Parton Distributions. Elastic Form Factors and Charge Distributions in Space. From Form Factors to Quark Spin Distributions
Outline Generalized Parton Distributions in lepton scattering and antiproton annihilation experiments Michael DürenD Universität Gießen en The structure of the proton: From form factors to uark spin distributions
More informationStatus report of Hermes
Status report of Hermes Delia Hasch Physics Research Committee, DESY Oct 27/28 2004 Spin physics: finalised and new results on: inclusive, semi-inclusive and exclusive measurements nuclear effects data
More informationTransverse Target Asymmetry in Exclusive Charged Pion Production at 12 GeV
Transverse Target Asymmetry in Exclusive Charged Pion Production at 12 GeV Dipangkar Dutta Mississippi State University (with Dave Gaskell & Garth Huber) Polarized Target Workshop: June 17-18, 2010 Outline
More informationSpin and Azimuthal Asymmetries at JLAB
Spin and Azimuthal Asymmetries at JLAB H. Avakian *) Jefferson Lab Single-Spin Asymmetries Workshop, BNL June 1-3, 2005 *) in collaboration with P.Bosted, V. Burkert and L. Elouadrhiri Outline Introduction
More informationPhysics Prospects with the JLab 12 GeV Upgrade
Physics Prospects with the JLab 12 GeV Upgrade Gluonic Excitations 3-dim view of the Nucleon Valence Structure of the Nucleon Elton S. Smith Jefferson Lab PANIC02 Osaka 1 CEBAF @ JLab Today Main physics
More informationTime-like Compton Scattering with transversely polarized target
Time-like Compton Scattering with transversely polarized target Vardan Tadevosyan AANSL (YerPhI) Foundation JLab 1/19/2017 Outline Physics case and motivation Experimental setup Simulation results Latest
More informationThe Jlab 12 GeV Upgrade
The Jlab 12 GeV Upgrade R. D. McKeown Jefferson Lab College of William and Mary 1 12 GeV Science Program The physical origins of quark confinement (GlueX, meson and baryon spectroscopy) The spin and flavor
More informationGeneralized Parton Distributions Program at COMPASS. QCD Evolution 2015
Generalized Parton Distributions Program at COMPASS Eric Fuchey (CEA Saclay) On behalf of COMPASS Collaboration QCD Evolution 2015 Thomas Jefferson National Accelerator Facility (May 26-30 2014) Generalized
More informationHall B Physics Program and Upgrade Plan
Hall B Physics Program and Upgrade Plan Volker D. Burkert Jefferson Lab Introduction The Equipment Plan The 12 GeV Physics Program Conclusions PAC23 Meeting on the 12 GeV Upgrade, January 20, 2003 Physics
More informationDVCS Measurement and Luminosity Determination at COMPASS
.. EPJ manuscript No. Will be inserted by the editor (will be inserted by the editor) DVCS Measurement and Luminosity Determination at COMPASS Nicolas du Fresne von Hohenesche for the COMPASS collaboration,,a
More informationHadron 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 informationDeuteron from CLAS/EG1B Data. Spin Structure Functions of the OUTLINE. Nevzat Guler (for the CLAS Collaboration) Old Dominion University
Spin Structure Functions of the Deuteron from CLAS/EGB Data Nevzat Guler (for the CLAS Collaboration) Old Dominion University OULINE Formalism Experimental setup Data analysis Results and Conclusion Motivation
More informationTime-like Compton Scattering with transversely polarized target
Time-like Compton Scattering with transversely polarized target Vardan Tadevosyan AANSL (YerPhI) Foundation Arthur Mkrtchyan CUA Outline Physics case and motivation Experimental setup Simulation results
More informationThe Neutral-Particle Spectrometer
The Neutral-Particle Spectrometer White Paper outlining the Science and Path to Realization of the NPS The Neutral-Particle Spectrometer (NPS) Collaboration at Jefferson Lab November 26, 2014 The two-arm
More informationHERMES Status Report
HERMES Status Report Sergey Yaschenko for the Collaboration DESY PRC, Hamburg, April 1, 008 Outline Introduction Physics Highlights from HERMES Isoscalar extraction of ΔS Model-dependent constraint on
More informationExperimental investigation of the nucleon transverse structure
Electron-Nucleus Scattering XIII Experimental investigation of the nucleon transverse structure Silvia Pisano Laboratori Nazionali di Frascati INFN. The unsolved proton How do the lagrangian degrees of
More informationTarget single- and double-spin asymmetries in DVCS off a longitudinal polarized hydrogen target at HERMES
Target single- and double-spin asymmetries in DVCS off a longitudinal polarized hydrogen target at HERMES David Mahon University of Glasgow E-mail: d.mahon@physics.gla.ac.uk Caroline Riedl DESY, Zeuthen
More informationGeneralized Parton Distributions Recent Progress
Generalized Parton Distributions Recent Progress (Mostly a summary of various talks at SIR2005@Jlab in May 2005 Pervez Hoodbhoy Quaid-e-Azam University Islamabad γ* γ,π,ρ hard soft x+ξ x-ξ GPDs P P t Factorisation:
More informationFitting GPDs and CFFs various approaches. Physics Department University of Zagreb, Croatia
Fitting GPDs and CFFs various approaches Krešimir Kumerički Physics Department University of Zagreb, Croatia Nuclear and Nucleon Structure Through Dileptons Production ECT Trento, Italy, 24 28 October
More informationAnalysis of Lepton Pair Production at GlueX
Analysis of Lepton Pair Production at GlueX A thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science degree in Physics from the College of William and Mary by
More informationSemi-Inclusive Deep-Inelastic Scattering and Kaons from CLAS6
Semi-Inclusive Deep-Inelastic Scattering and Kaons from CLAS6 K. Griffioen College of William & Mary griff@physics.wm.edu Workshop on Probing Strangeness in Hard Processes Laboratori Nazionale di Frascati
More informationLatifa Elouadrhiri. Phone: X Jefferson Lab. Thomas Jefferson National Accelerator Facility Page 1
Deep Exclusive Processes Latifa Elouadrhiri Office: CC B121 Phone: X7303 E-mail: latifa@jlab.org Jefferson Lab Thomas Jefferson National Accelerator Facility Page 1 Outline Some basics about the proton
More informationwell known known uncertain
well known known uncertain Kinematical domain E=190, 100GeV Nx2 Collider : H1 & ZEUS 0.0001
More informationMeasuring 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 informationSpin Structure of the Nucleon: quark spin dependence
Spin Structure of the Nucleon: quark spin dependence R. De Vita Istituto Nazionale di Fisica Nucleare Electromagnetic Interactions with Nucleons and Nuclei EINN005 Milos September, 005 The discovery of
More informationThreshold 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 informationNear Threshold π 0 Electroproduction at High Q 2
Near Threshold π 0 Electroproduction at High Q 2 Puneet Khetarpal Rensselaer Polytechnic Institute Troy, NY May 20, 2010 P. Stoler V. Kubarovsky V. Braun & The CLAS Collaboration Puneet Khetarpal (RPI)
More informationSubleading-twist effects in single-spin asymmetries in semi-inclusive DIS on a longitudinally polarized hydrogen target
Subleading-twist effects in single-spin asymmetries in semi-inclusive DIS on a longitudinally polarized hydrogen target G Schnell, H Ohsuga, H Tanaka, T Hasegawa, T Kobayashi, Y Miyachi, T-A Shibata Tokyo
More informationSelected Recent Results from HERMES
Selected Recent Results from HERMES Seattle Spin Symposium, August 4-7, 23 Wolf-Dieter Nowak DESY Zeuthen Wolf-Dieter.Nowak@desy.de For the Collaboration Wolf-Dieter Nowak (DESY), HERMES Collaboration
More informationhermes Collaboration
Probes of Orbital Angular Momentum at HERMES - a drama with prologe, some slides, and a (not yet so) happy end - G Schnell Universiteit Gent gunarschnell@desyde For the hermes Collaboration Gunar Schnell,
More informationProgress on the DVCS program at Compass E. Burtin CEA Saclay Irfu/SPhN GDR nucléon, Ecole Polytechnique, 12 décembre 2008
Progress on the DVCS program at Compass E. Burtin CEA Saclay Irfu/SPhN GDR nucléon, Ecole Polytechnique, 12 décembre 2008 Today and tomorrow 2010 and beyond 2008 (Today) : Target region Ring B Ring A 2008
More informationPolarised Drell-Yan Process in the COMPASS Experiment
Polarised Drell-Yan Process in the COMPASS Experiment Ma rcia Quaresma, LIP - Lisbon on behalf of the COMPASS collaboration 1th April 16, DIS 16 Hamburg COMPASS Ma rcia Quaresma (LIP) CERN/FIS-NUC/17/15
More informationHERMES at HERA: Quark-Gluon Spin Structure of the Nucleon
HERMES at HERA: Quark-Gluon Spin Structure of the Nucleon Introduction The year 2002, marked the 75th anniversary of Dennison s discovery that the proton, just like the electron, carries spin. The electron
More informationLatifa Elouadrhiri. Phone: X Jefferson Lab. Thomas Jefferson National Accelerator Facility Page 1
Deep Exclusive Processes Latifa Elouadrhiri Office: CC B121 Phone: X7303 E-mail: latifa@jlab.org Jefferson Lab Thomas Jefferson National Accelerator Facility Page 1 Outline Some basics about the proton
More informationThe 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 informationStructure of Generalized Parton Distributions
=Hybrids Generalized Parton Distributions A.V. Radyushkin June 2, 201 Hadrons in Terms of Quarks and Gluons =Hybrids Situation in hadronic physics: All relevant particles established QCD Lagrangian is
More informationDeep Exclusive π " Production with transversely polarized He3 using SoLID
Deep Exclusive π " Production with transversely polarized He3 using SoLID A run-group proposal with E12-10-006 Zhihong Ye, ANL On behalf of Co-Spokespeople: Garth Huber (contact), Zafar Ahmed, from Univ.
More informationL-T Separation in Pseudoscalar Meson Production
L-T Separation in Pseudoscalar Meson Production Dave Gaskell Jefferson Lab Exclusive Meson Production and Short Range Hadron Structure January 23, 2014 1 Motivation for L-T separations Inclusive Deep Inelastic
More informationTechniques of GPD extraction from data
Techniques of GPD extraction from data Krešimir Kumerički University of Zagreb, Croatia INT-17-3 Workshop: Tomography of Hadrons and Nuclei at Jefferson Lab August 28 September 29, 2017 Seattle, WA Outline
More informationWide-Angle Compton Scattering up to 10 GeV
γp -> γp Wide-Angle Compton Scattering up to 10 GeV B. Wojtsekhowski Outline WACS physics WACS method and results Next WACS measurements Proposed measurements with NPD/HMS JLab, January 24, 2013 WACS in
More informationThe reaction p(e,e'p)π 0 to calibrate the Forward and the Large Angle Electromagnetic Shower Calorimeters
The reaction p(e,e'p)π 0 to calibrate the Forward and the Large Angle Electromagnetic Shower Calorimeters M.Battaglieri, M.Anghinolfi, P.Corvisiero, A.Longhi, M.Ripani, M.Taiuti Istituto Nazionale di Fisica
More informationCoulomb Sum Rule. Huan Yao Feb 16,2010. Physics Experiment Data Analysis Summary Collaboration APS April Meeting
Coulomb Sum Rule 2010 APS April Meeting Huan Yao hyao@jlab.org Feb 16,2010 1 / 17 Physics Motivation The test of Coulomb Sum Rule is to shed light on the question of whether or not the properties of nucleons
More informationHelicity: 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 informationMeasurement of the photon electroproduction cross section at JLab with the goal of performing a Rosenbluth separation of the DVCS contribution.
PHD THESIS: Measurement of the photon electroproduction cross section at JLab with the goal of performing a Rosenbluth separation of the DVCS contribution. A Thesis submitted by Alejandro Martí Jiménez-Argüello
More informationMERIEM BENALI November 09, 2016 LPC-Clermont-Ferrand GDR-QCD
γ* γ N N MERIEM BENALI November 09, 016 LPC-Clermont-Ferrand GDR-QCD Plan Generalized Polarizabilities (GPs) of the proton Extraction methods of GPs at Q²=0.45 GeV²: - Low Energy expansion approach (LEX)
More informationTHE NUCLEUS AS A QCD LABORATORY: HADRONIZATION, 3D TOMOGRAPHY, AND MORE
rhtjhtyhy EINN 2017 NOVEMBER 1, 2017 PAPHOS, CYPRUS THE NUCLEUS AS A QCD LABORATORY: HADRONIZATION, 3D TOMOGRAPHY, AND MORE KAWTAR HAFIDI Argonne National Laboratory is a U.S. Department of Energy laboratory
More informationLessons from Lepton-Nucleon and Lepton-Nuclei Interactions Probing the structure of the atomic nucleus
Lessons from Lepton-Nucleon and Lepton-Nuclei Interactions Probing the structure of the atomic nucleus Raphaël Dupré Disclaimer This will be only a selection of topics Like any review of a field I encourage
More informationCOMPASS plans to measure GPDs
COMPASS plans to measure GPDs Jean-Marc Le Goff DAPNIA/CEA-Saclay 24 Feb 2006, Albuquerque workshop on Orbital Angular Momentum The COMPASS experiment GPDs at COMPASS now: deep ρ production 2010: DVCS
More informationHall C SIDIS Program basic (e,e p) cross sections
Hall C SIDIS Program basic (e,e p) cross sections Linked to framework of Transverse Momentum Dependent Parton Distributions Validation of factorization theorem needed for most future SIDIS experiments
More informationDi-muon electroproduction with CLAS12
Di-muon electroproduction with CLAS1 S. Stepanyan (JLAB) CLAS collaboration meeting, June 16-18, 016 Ø Physics motivation for LOI: Double DVCS J/ψ-electroproduction Ø Detector configuration Background
More informationDeeply Virtual Scalar Produc2on
Exclusive Meson Producon Workshop - 4 Jan 015, Jefferson Lab Deeply Virtual Scalar Producon Charles Hyde Old Dominion University Mirror Image Symmetry Breaking Global GPD program GPD program DVCS Deep
More informationExperimental results on GPDs
Experimental results on GPDs e e g Silvia Niccolai, IPN Orsay for the CLAS Collaboration HIX2014, 20/11/2014, Frascati (Italia) N N GPDs Interest of GPDs GPDs and DVCS Recent DVCS results from Jefferson
More informationGluon 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 informationDVCS and DVMP: results from CLAS and the experimental program of CLAS12
DVCS and DVMP: results from CLAS and the eperimental program of CLAS12 e e g N N GPDs Accessing GPDs via DVCS and DVMP Recent results from Jefferson Lab Silvia Niccolai IPN Orsay & CLAS Collaboration What
More informationNeutron Structure Function from BoNuS
Neutron Structure Function from BoNuS Stephen BültmannB Old Dominion University for the CLAS Collaboration The Structure of the Neutron at Large x The BoNuS Experiment in 005 First Results from the BoNuS
More informationUPDATE ON DVCS ANALYSIS
UPDATE ON DVCS ANALYSIS FROM E-6 DATA A. Movsisyan, S. Pisano, H. Avakian INFN-Ferrara Collabon meeting..5 Physics Motivation DVCS - so far the most reliable tool to access GPDs: Example of recent results
More informationStatus Report on the Precision Measurement of d n 2
Status Report on the Precision Measurement of d n 2 Experiment E06-014 Diana Parno (Carnegie Mellon University) David Flay, Matthew Posik (Temple University) December 15, 2009 Diana Parno (Carnegie Mellon)
More informationDiffractive production of isolated photons with the ZEUS detector at HERA
Diffractive production of isolated photons with the ZEUS detector at HERA On behalf of the ZEUS Collaboration Tel Aviv University, Tel Aviv, Israel levyaron@post.tau.ac.il The photoproduction of isolated
More informationSearch for Pentaquarks at CLAS. in Photoproduction from Proton
Search for Pentaquarks at CLAS M. Battaglieri, R. De Vita, V. Kubarovsky, D. Weygand and the CLAS Collaboration April Meeting Quarks and QCD quarks are among the few known elementary particles quarks interact
More informationThe Determination of Beam Asymmetry from Double Pion Photoproduction
The Determination of Beam Asymmetry from Double Pion Photoproduction Charles Hanretty Florida State University On behalf of the CLAS Collaboration Funding provided by DOE APS DNP Conference May 2, 2009
More informationAn Electron-Nucleon Collider at FAIR
An Electron-Nucleon Collider at FAIR Wolfgang Gradl for the ENC@FAIR study group Institut für Kernphysik Physics at a High Energy Electron Ion Collider Seattle, 19 th October 009 Outline FAIR and PANDA
More informationRecent 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 informationWide-Angle Compton Scattering and Pion photo-production
γp -> γp Wide-Angle Compton Scattering and Pion photo-production B. Wojtsekhowski, for the NPS/WACS/Pion collaboration Outline WACS proposal update (David&Simon) Pion proposal formulation (Dipangkar) Experimental
More informationGPDs. -- status of measurements -- a very brief introduction prerequisites and methods DVCS & DVMP: selected results on the way to an EIC
Delia Hasch GPDs -- status of measurements -- a very brief introduction prerequisites and methods & DVMP: selected results on the way to an EIC see additional slides for results not covered POETIC 01,
More informationFlavor Decomposition of Nucleon Spin via polarized SIDIS: JLab 12 GeV and EIC. Andrew Puckett Los Alamos National Laboratory INT 09/24/2010
Flavor Decomposition of Nucleon Spin via polarized SIDIS: JLab 12 GeV and EIC Andrew Puckett Los Alamos National Laboratory INT 09/24/2010 Outline Nucleon Structure Nucleon spin structure Flavor decomposition
More information