Transverse momentum dependent parton densities in processes with heavy quark generationsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 3 ноября 2021 г.
Аннотация:We study the heavy quark production processes with the transverse momentum dependent (unintegrated) gluon distribution function in a proton which is obtained recently using the Kimber-Martin-Ryskin prescription from the Bessel-inspired behavior of parton densities at small Bjorken x values. Our results agree with the latest HERA experimental data for reduced cross sections σc¯cred(x,Q2) and σb¯bred(x,Q2), and also for deep inelastic structure functions Fc2(x,Q2) and Fb2(x,Q2) in a wide range of x and Q2 values. Comparisons with the predictions based on the Ciafaloni-Catani-Fiorani-Marchesini evolution equation and with the results of conventional pQCD calculations performed at the first three orders of perturbative expansion are presented.