Deeply virtual Compton scattering at H1 and ZEUS
نویسندگان
چکیده
منابع مشابه
Deeply Virtual Compton Scattering at H1 and Zeus
The study of exclusive final states in electron-proton diffractive interactions is a very powerful tool to investigate the applicability and the relevance of perturbative Quantum Chromo Dynamics (QCD) in this field. At HERA, the wide kinematic range in the photon virtuality, Q, provides particular insight into the interplay between perturbative and non-perturbative regimes in QCD. Moreover, a c...
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The interest of Deeply Virtual Compton Scattering (DVCS), i.e. exclusive photon production off the proton γ∗p −→ γp (see Fig. 1a), is in the insight it gives to the applicability of perturbative Quantum Chromo Dynamics (QCD) in the field of diffractive interactions and to the nucleon partonic structure. The hard interaction between the photon and the proton proceeds via the exchange of at least...
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The process of deeply virtual Compton scattering will be shortly introduced, and the latest results from measurements at the HERA ep–collider at DESY will be given. In particular, the cross section has been measured with increased statistics at the collider experiments H1 and ZEUS, while HERMES for the first time reports measurements of the t–dependence of the beam–charge asymmetry on hydrogen ...
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New results on the Deeply Virtual Compton Scattering process γ * p → γp (DVCS) from H1 experiment at the ep collider HERA are presented, using data collected during the year 2004 and corresponding to an integrated luminosity of 39.7 pb −1. The DVCS cross section is measured as a function of the photon virtuality, Q 2 , the γ * p c.m.s. energy W and differentially in the momentum transfer square...
متن کاملDeeply-virtual Compton Scattering
We study in QCD the physics of deeply-virtual Compton scattering (DVCS)—the virtual Compton process in the large s and small t kinematic region. We show that DVCS can probe a new type of off-forward parton distributions. We derive an Altarelli-Parisi type of evolution equations for these distributions. We also derive their sum rules in terms of nucleon form-factors of the twist-two quark and gl...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2002
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(02)01209-5