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Probing proton intrinsic charm in photon or Z boson production accompanied by heavy jets at the LHCстатья
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: 28 октября 2016 г.
- Авторы: Lipatov A. V, Lykasov G. I, Stepanenko Yu Yu, Bednyakov V. A
- Журнал: Physical Review D
- Том: 94
- Год издания: 2016
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 053011
- DOI: 10.1103/PhysRevD.94.053011
- Аннотация: We consider an observable very sensitive to the nonzero intrinsic charm (IC) contribution to the proton density. It is the ratio between the differential cross sections of the photon or Z-boson and c-jet production in the pp collision, γ(Z)+c, and the γ(Z) and the b-jet production. It is shown that this ratio can be approximately flat or increasing at large γ(Z) transverse momenta pT, and their pseudorapidities 1.5<η<2.4 if the IC contribution is taken into account. On the contrary, in the absence of the IC, this ratio decreases as pT grows. We also present the ratios of the cross sections integrated over pT as a function of the IC probability w. It is shown that these ratios are mostly independent on the theoretical uncertainties, and such predictions could therefore be much more promising for the search for the intrinsic charm signal at the LHC compared to the predictions for pT spectra, which significantly depend on these uncertainties.
- Добавил в систему: Липатов Артем Владимирович