Deep inelastic prompt photon production at HERA in the kt-factorization approachстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We investigate the prompt photon production in deep inelastic scattering at HERA in the framework of the kt-factorization QCD approach. Our study is based on the off-shell partonic amplitude eq* -> e gamma q, where the photon radiation from the leptons as well as from the quarks is taken into account. The unintegrated quark densities in a proton are determined using the Kimber-Martin-Ryskin prescription. We investigate both inclusive and jet-associated prompt photon production rates. Our predictions are compared with the recent experimental data taken by the H1 and ZEUS Collaborations. We demonstrate that in the kt-factorization approach the contribution from the quark radiation subprocess (QQ mechanism) is enhanced as compared to the leading-order collinear approximation.