CERN Accelerating science

Article
Report number	arXiv:2007.01826
Title	Diffractive $\gamma \gamma$ production in $pp$ collisions at the LHC
Author(s)	Goncalves, V.P. (Pelotas U.) ; Martins, D.E. (Rio de Janeiro Federal U.) ; Rangel, M.S. (Rio de Janeiro Federal U.)
Publication	2020-09-10
Imprint	2020-07-02
Number of pages	7
Note	7 pages, 4 figures, 3 tables. Improved version to be published in EPJC. arXiv admin note: text overlap with arXiv:2002.03902
In:	Eur. Phys. J. C 80 (2020) 841
DOI	10.1140/epjc/s10052-020-8393-9
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Accelerator/Facility, Experiment	CERN LHC
Abstract	In this letter we estimate the contribution of the double diffractive processes for the diphoton production in $pp$ collisions at the Large Hadron Collider (LHC). The acceptance of the central and forward LHC detectors is taken into account and predictions for the invariant mass, rapidity and, transverse momentum distributions are presented. A comparison with the predictions for the Light -- by -- Light (LbL) scattering and exclusive diphoton production is performed. We demonstrate that the events associated to double diffractive processes can be separated and its study can be used to constrain the behavior of the diffractive parton distribution functions.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) CC-BY-4.0

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