Associated non-prompt J/ψ plus μ and J/ψ plus J/ψ production at LHC as a test for TMD gluon density

被引：0
|
作者：
Baranov, S. P. [1 ]
Lipatov, A. V. [2 ,3 ]
Malyshev, M. A. [2 ]
机构：
[1] PN Lebedev Phys Inst, Moscow 119991, Russia
[2] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
[3] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
来源：
EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 10期
关键词：
SMALL-X PHENOMENOLOGY; HEAVY-QUARK PRODUCTION; PARTON DISTRIBUTIONS; QCD COHERENCE; ANNIHILATION;
D O I：
10.1140/epjc/s10052-018-6297-8
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We consider the associated production of J/psi mesons and muons originating from the b-flavored hadron decays and non-prompt double J/psi production at the LHC using the k(T)-factorization approach. To describe the inclusive b-hadron decays into the different charmonium states we apply fragmentation approach and adopt fragmentation functions based on the non-relativistic QCD factorization. The transverse momentum dependent (TMD) gluon densities in a proton are determined using the Catani-Ciafaloni-Fiorani-Marchesini equation and Kimber-Martin-Ryskin prescription. We investigate the effects coming from parton showers, estimate the double parton scattering contribution and compare our predictions with the first experimental data taken by the ATLAS and LHCb Collaborations at root s = 8 TeV. These data can serve as an additional test for TMD gluon density function in a proton.
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页数：14
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