Timelike Compton scattering off the proton and generalized parton distributions

被引：0
作者：
M. Boër
M. Guidal
M. Vanderhaeghen
机构：
[1] Université Paris-Sud,Institut de Physique Nucléaire d’Orsay, CNRS
[2] Johannes Gutenberg Universität,IN2P3
来源：
The European Physical Journal A | 2015年 / 51卷
关键词：
Deeply Virtual Compton Scattering; Phase Space Factor; Generalize Parton Distribution; Unpolarized Cross Section; Decay Angle;
D O I：
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学科分类号：
摘要：
We study the exclusive photoproduction of a lepton pair off the proton with the aim of studying the proton quark structure via the Generalized Parton Distributions (GPD) formalism. After deriving the amplitudes of the processes contributing to the γP → P′ e+e−, the timelike Compton scattering and the Bethe-Heitler process, we calculate all unpolarized, single- and double- spin beam-target observables in the valence region in terms of GPDs.
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