EPJ Web Conf.
Volume 222, 2019The XXIV International Workshop “High Energy Physics and Quantum Field Theory” (QFTHEP 2019)
|Number of page(s)||8|
|Published online||19 November 2019|
Production of prompt photons associated with jets at LHC in kT-factorization
Skobeltsyn Institute of Nuclear Physics, Moscow State University,
Leninskie Gory 1 (2),
2 Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow Region, Russia
3 Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany
* e-mail: firstname.lastname@example.org
Published online: 19 November 2019
We use the kT–factorization approach to calculate total and differential cross sections of associated production of prompt photons and hadronic jets at the LHC energies. Our consideration relies on the pegasus Monte-Carlo generator with implemented ℴ(αα2s) off-shell gluon–gluon fusion subprocess g*g* → γqq− and several subleading quark-initiated contributions from ℴ(ααs) and ℴ(αα2s) subprocesses, taken into account in the collinear limit. Using Monte-Carlo generators CASCADE and PYTHIA, we investigate parton showering effects and compare our predictions with the data, taken by CMS and ATLAS collaborations at the LHC. We demostrate reasonabledescription of the data and the importance of parton shower effects in the kT–factorization.
© The Authors, published by EDP Sciences, 2019
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