Transverse momentum dependent parton densities in processes with heavy quark generations

被引：14
作者：
Kotikov, A., V [1 ]
Lipatov, A., V [1 ,2 ]
Zhang, P. M. [3 ]
机构：
[1] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[2] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
[3] Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
来源：
PHYSICAL REVIEW D | 2021年 / 104卷 / 05期
基金：
中国国家自然科学基金;
关键词：
SMALL-X-BEHAVIOR; DEEP-INELASTIC SCATTERING; FUNCTION F-L; HIGH-ENERGY FACTORIZATION; HIGGS-BOSON PRODUCTION; OFF-SHELL GLUONS; CROSS-SECTIONS; EP SCATTERING; D-ASTERISK(+/-) PRODUCTION; POMERANCHUK SINGULARITY;
D O I：
10.1103/PhysRevD.104.054042
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 sigma(c (c) over bar)(red) (x, Q(2)) and sigma(b (b) over bar)(red)(x, Q(2)), and also for deep inelastic structure functions F-2(c)(x, Q(2)) and (b)(F)(2)(x, Q(2)) in a wide range of x and Q(2) 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.
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页数：18
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