Gluon tomography from deeply virtual Compton scattering at small x

Hatta, Yoshitaka; Xiao, Bo-Wen; Yuan, Feng

doi:10.1103/PhysRevD.95.114026

Title: Gluon tomography from deeply virtual Compton scattering at small $x$

Journal Article · Thu Jun 29 00:00:00 EDT 2017 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.95.114026· OSTI ID:1430681

Hatta, Yoshitaka ^[1]; Xiao, Bo-Wen ^[2]; Yuan, Feng ^[3]

Kyoto Univ. (Japan). Yukawa Inst. for Theoretical Physics
Central China Normal Univ., Wuhan (China). Key Lab. of Quark and Lepton Physics (MOE) and Inst. of Particle Physics
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division

We present a full evaluation of the deeply virtual Compton scattering cross section in the dipole framework in the small-x region. The result features the cosφ and cos2φ azimuthal angular correlations, which have been missing in previous studies based on the dipole model. In particular, the cos2φ term is generated by the elliptic gluon Wigner distribution of which the measurement at the planned electron-ion collider provides important information about the gluon tomography at small x. Here, we also show the consistency with the standard collinear factorization approach based on the quark and gluon generalized parton distributions.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

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

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1430681

Alternate ID(s):: OSTI ID: 1372556

Journal Information:: Physical Review D, Vol. 95, Issue 11; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 36 works

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