Largep T prompt photon production at HERA
نویسندگان
چکیده
منابع مشابه
- 045 June 1996 ISOLATED PROMPT PHOTON PRODUCTION AT HERA
We study the expectations for prompt photon production rates at HERA in a fully consistent next-to-leading order (NLO) QCD analysis, taking into account the effects of experimental isolation requirements. In particular we examine the sensitivity of the isolated cross section to the photon's gluon content. The utility of hadronic large-p T prompt photon production for providing constraints on th...
متن کاملDeeply 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...
متن کاملInclusive Prompt Photon Production in Polarized pp Collisions at HERA
We present a NLO study of inclusive polarized prompt photon production in a conceivable fixed target pp mode of HERA with longitudinally polarized protons at √ s = 39 GeV. We analyze the sensitivity of the corresponding double spin asymmetry to the proton’s polarized gluon distribution ∆g and estimate the expected statistical precision in its determination. The main theoretical uncertainties in...
متن کاملPrompt photon processes in photoproduction at HERA
We present results for the photoproduction of inclusive prompt photons and for prompt photons accompanied by jets, measured with the ZEUS detector at HERA. Cross sections as a function of pseudorapidity and transverse energy are presented for 5 < E T < 10 GeV, E jet T > 5 GeV in the centre of mass energy range 120–270 GeV. Comparisons are made with predictions from leading logarithm parton show...
متن کاملPrompt J/ψ plus photon associated electroproduction at DESY HERA
We study the production of a prompt J/ψ meson in association with a prompt photon in ep deep-inelastic scattering within the factorisation formalism of nonrelativistic quantum chromodynamics (NRQCD) and demonstrate that this process provides a clean probe of the colour-octet mechanism at DESY HERA. Our analysis is based on an updated set of non-perturbative NRQCD matrix elements obtained throug...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Zeitschrift für Physik C Particles and Fields
سال: 1994
ISSN: 0170-9739,1434-6052
DOI: 10.1007/bf01557624