Proposal for GPD studies at COMPASS

Journal Article · Mon Oct 24 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647097· OSTI ID:21608441

Burtin, E ^[1]

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1. CEA-Centre de Saclay Irfu, Service de Physique Nucleaire F-91191 Gif-sur Yvette Cedex (France)

The study of nucleon structure through Generalised Parton Distributions (GPD) is one major part of the future COMPASS-II physics program and can be performed using exclusive reactions like Deeply Virtual Compton Scattering (DVCS) and Meson Production. The high energy of the muon beam allows to measure the x{sub B}-dependence of the t-slope of the DVCS cross section. The use of positive and negative polarised muon beams allows to determine the Beam Charge and Spin Difference of the DVCS cross sections to access the real part of the Compton form factor related to the dominant GPD H. The sensitivity of both measurements is examined and confronted to existing models or global fits of the data. Preliminary beam test data were analyzed and demonstrated the feasibility of the identification of the DVCS reaction using the COMPASS experimental set-up.

• OSTI ID: 21608441
• Journal Information: AIP Conference Proceedings, Vol. 1374, Issue 1; Conference: MENU 2010: 12. international conference on meson-nucleon physics and the structure of the nucleon, Williamsburg, VA (United States), 31 May - 4 Jun 2010; Other Information: DOI: 10.1063/1.3647097; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPTON EFFECT
CROSS SECTIONS
DISTRIBUTION FUNCTIONS
EXCLUSIVE INTERACTIONS
FORM FACTORS
GLUONS
MULTIPARTICLE SPECTROMETERS
MUON BEAMS
MUONS
NUCLEONS
PARTICLE IDENTIFICATION
PARTICLE KINEMATICS
PARTICLE PRODUCTION
QUARKS
SPIN
ANGULAR MOMENTUM
BARYONS
BASIC INTERACTIONS
BEAMS
BOSONS
DIMENSIONLESS NUMBERS
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
INTERACTIONS
LEPTON BEAMS
LEPTONS
MEASURING INSTRUMENTS
PARTICLE BEAMS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
SCATTERING
SPECTROMETERS