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Measurement of inclusive D^\ast\pm and associated dijet cross sections in photoproduction at HERAстатья
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.
- Авторы: Bashindzhagyan G.L., Ermolov P.F., Gladilin L.K., Golubkov Yu A., Khein L.A., Korotkova N.A., Korzhavina I.A., Kuzmin V.A., Lukina O.Yu, Proskuryakov A.S., Shcheglova L.M., Solomin A.N., Zotkin S.A., et al, ZEUS Collaboraion
- Журнал: European Physical Journal C
- Том: 6
- Номер: 1
- Год издания: 1999
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Первая страница: 67
- Последняя страница: 83
- DOI: 10.1007/s100529801017
- Аннотация: Inclusive photoproduction of D∗± mesons has been measured for photon-proton centre-of-mass energies in the range 130<W<280 GeV and photon virtuality Q2< 1 GeV 2 . The data sample used corresponds to an integrated luminosity of 37 pb −1 . Total and differential cross sections as functions of the D∗ transverse momentum and pseudorapidity are presented in restricted kinematical regions and the data are compared with next-to-leading order (NLO) perturbative QCD calculations using the “massive charm” and “massless charm” schemes. The measured cross sections are generally above the NLO calculations, in particular in the forward (proton) direction. The large data sample also allows the study of dijet production associated with charm. A significant resolved as well as a direct photon component contribute to the cross section. Leading order QCD Monte Carlo calculations indicate that the resolved contribution arises from a significant charm component in the photon. A massive charm NLO parton level calculation yields lower cross sections compared to the measured results in a kinematic region where the resolved photon contribution is significant.
- Добавил в систему: Проскуряков Александр Сергеевич