The 9th Joint International Hadron Structure '15 Conference, Horný Smokovec, Slovak Republic, 29 June–3 July 2015; Editors: Stanislav Dubnička, Anna Zuzana Dubničková and Erik BartošOpen Access

Significance of gluon density at soft and hard processes at LHC

A. A. Grinyuk

Joint Instute for Nuclear Research, Dubna, Moscow Region, 141980, Russia

E-mail Address: andrei.grinyuk@gmail.com

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A. V. Lipatov

Joint Instute for Nuclear Research, Dubna, Moscow Region, 141980, Russia

Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia

E-mail Address: lipatov@theory.sinp.msu.ru

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, and

G. I. Lykasov

Joint Instute for Nuclear Research, Dubna, Moscow Region, 141980, Russia

E-mail Address: lykasov@jinr.ru

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https://doi.org/10.1142/S2010194515601155Cited by:0 (Source: Crossref)

Abstract

We study the role of the non-perturbative input to the transverse momentum dependent (TMD) gluon density in hard processes at the LHC. We derive the TMD gluon distribution from the fit of the inclusive hadron spectra measured at low transverse momenta in $p p$ $p p$ collisions at the LHC and demonstrate that the best description of these spectra for larger hadron transverse momenta can be achieved by matching the derived TMD gluon distribution with the exact solution of the Balitsky-Fadin-Kuraev-Lipatov (BFKL) equation obtained at small transverse momenta outside the saturation region. A special attention is put to the phenomenological applications of presented TMD parton densities to some LHC processes, which are sensitive to the quark and gluon content of a proton.

PACS: 12.38.Bx, 14.65.Dw, 14.65.Fy

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Published: 26 November 2015

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