Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions

Jo, Hyon -Suk

doi:10.1103/PhysRevLett.115.212003

Title: Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions

Journal Article · 17 November 2015 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.115.212003 · OSTI ID:1226143

Jo, Hyon -Suk ^[1]

Institut de Physique Nucleaire, CNRS/IN2P3 and Univ. Paris Sud, Orsay (France). et al.

Unpolarized and beam-polarized four-fold cross sections $$\frac{d^4 \sigma}{dQ^2 dx_B dt d\phi}$$ for the $$ep\to e^\prime p^\prime \gamma$$ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 ($$Q^2,x_B,t$$) bins over the widest phase space ever explored in the valence-quark region. Several models of Generalized Parton Distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD $$H$$, expected to be the dominant contributor to these observables. Thus, through a leading-twist extraction of Compton Form Factors, these results reveal a tomographic image of the nucleon.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Organization:: CLAS Collaboration

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 1226143

Alternate ID(s):: OSTI ID: 1226380

Report Number(s):: JLAB-PH-15-2037; DOE/OR/23177-3373; arXiv:1504.02009; PRLTAO

Journal Information:: Physical Review Letters, Vol. 115, Issue 21; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 62 works

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