Gluon tomography from deeply virtual Compton scattering at small x

Gluon tomography from deeply virtual Compton scattering at small x 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. We also show the consistency with the standard collinear factorization approach based on the quark and gluon generalized parton distributions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Gluon tomography from deeply virtual Compton scattering at small x

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Gluon tomography from deeply virtual Compton scattering at small x

Abstract

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. We also show the consistency with the standard collinear factorization approach based on the quark and gluon generalized parton distributions.
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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.95.114026
Publisher site
See Article on Publisher Site

Abstract

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. We also show the consistency with the standard collinear factorization approach based on the quark and gluon generalized parton distributions.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jun 1, 2017

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