Report/Journal Article

PUBDB-2020-00320

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png TMD parton shower effects in associated $\gamma +$ jet production at the LHC

Lipatov, A. V. (Corresponding author)Extern* ; Malyshev, M. A. ; Jung, H.DESY*

2019
Inst.302363 Melville, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevD.100.034028  doi:10.3204/PUBDB-2020-00320

Report No.: DESY-19-114; arXiv:1906.10552

Abstract: We investigate associated prompt photon and hadronic jet production at the LHC energies using the kT-factorization approach. Our consideration is based on the O(ααs2) off-shell gluon-gluon fusion subprocess g*g*→γqq¯ and several subleading quark-initiated contributions from O(ααs) and O(ααs2) subprocesses, taken into account in the conventional (collinear) QCD factorization. The transverse momentum–dependent (or unintegrated) gluon densities in a proton are derived from Catani-Ciafaloni-Fiorani-Marchesini evolution equation. We achieve reasonably good agreement with the experimental data taken by CMS and ATLAS Collaborations and demonstrate the importance of initial-state parton showers for jet determination in the kT-factorization approach.

Keyword(s): jet: associated production ; parton: showers ; transverse momentum: factorization ; jet: hadronic ; quantum chromodynamics: factorization ; gluon gluon: fusion ; gluon: density ; photon: direct production ; CERN LHC Coll ; transverse momentum dependence ; CCFM equation ; initial state ; factorization: collinear ; off-shell ; ATLAS ; CMS

Note: 12 pages, 4 figures. arXiv admin note: text overlap with arXiv:1708.07079

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Contributing Institute(s):

1. LHC/CMS Experiment (CMS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. Facility (machine) LHC

Appears in the scientific report 2019

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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