Abstract
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.
Highlights
Investigation of prompt1 photon and associated jet production is an important topic of modern experimental and theoretical research
Our consideration relies on the pegasus Monte-Carlo generator with implemented O(αα2s) off-shell gluon-gluon fusion subprocess g∗g∗ → γqqand 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
Summary
Investigation of prompt1 photon and associated jet production is an important topic of modern experimental and theoretical research. 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∗ → γqqand several subleading quark-initiated contributions from O(ααs) and O(αα2s) subprocesses, taken into account in the collinear limit.
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