Prompt Photon Production and Observation of Deeply Virtual Compton Scattering
نویسنده
چکیده
Two recent results in ep physics using the ZEUS detector at HERA are discussed: a measurement of the prompt photon production cross section in photoproduction, and the first observation of Deeply Virtual Compton Scattering in DIS.
منابع مشابه
Deeply Virtual Compton Scattering and Prompt Photon Production at Hera
Recent results on the Deeply Virtual Compton Scattering (DVCS) and prompt photon productions from H1 and ZEUS experiments on the ep collider HERA are presented. A new DVCS cross section measurements of the H1 Collaboration, for photon virtualities Q > 4 GeV and photon-proton c.m.s. energy 30 < W < 140 GeV, are discussed and compared to NLO QCD calculations encoding Generalized Parton Distributi...
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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...
متن کاملx / 02 05 02 6 v 1 1 3 M ay 2 00 2 PROMPT PHOTONS AND DEEPLY VIRTUAL COMPTON SCATTERING AT HERA
Two results in ep physics using HERA data are discussed: a measurement of the effective transverse parton momentum in the proton by studying the production of prompt-photons in photoproduction events in the ZEUS collaboration and differential cross sections for Deeply Virtual Compton Scattering obtained by both the H1 and ZEUS collaborations.
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