Implications of CMS analysis of photon-photon interactions for photon PDFs

Obul, Pazilet; Ababekri, Mamut; Dulat, Sayipjamal; Isaacson, Joshua; Schmidt, Carl; Yuan, C. -P.

doi:10.1088/1674-1137/42/11/113101

Title: Implications of CMS analysis of photon-photon interactions for photon PDFs

Journal Article · Tue Sep 25 00:00:00 EDT 2018 · Chinese Physics. C, High Energy Physics and Nuclear Physics

DOI:https://doi.org/10.1088/1674-1137/42/11/113101· OSTI ID:1497101

Obul, Pazilet ^[1]; Ababekri, Mamut ^[1]; Dulat, Sayipjamal ^[1];

^[2];

^[3];

^[3]

Xinjiang Univ., Xinjiang (China)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Michigan State Univ., East Lansing, MI (United States)

As part of a recent analysis of exclusive two-photon production of W⁺ W ^– pairs at the LHC, the CMS experiment used di-lepton data to obtain an “effective” photon-photon luminosity. We show how the CMS analysis on their 8 TeV data, along with some assumptions about the likelihood for events in which the proton breaks up to pass the selection criteria, can be used to significantly constrain the photon parton distribution functions, such as those from the CTEQ, MRST, and NNPDF collaborations. We compare the data with predictions using these photon distributions, as well as the new LUXqed photon distribution. We study the impact of including these data on the NNPDF2.3QED, NNPDF3.0QED and CT14QEDinc fits. We find that these data place a useful and complementary cross-check on the photon distribution, which is consistent with the LUXqed prediction while suggesting that the NNPDF photon error band should be significantly reduced. Additionally, we propose a simple model for describing the two-photon production of W⁺ W ^– at the LHC. In conclusion, using this model, we constrain the number of inelastic photons that remain after the experimental cuts are applied.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1497101

Report Number(s):: arXiv:1603.04874; FERMILAB-PUB-18-742-T; 1428662

Journal Information:: Chinese Physics. C, High Energy Physics and Nuclear Physics, Vol. 42, Issue 11; ISSN 1674-1137

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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Cited By (3)

Probing the photonic content of the proton using photon-induced dilepton production in $p + Pb$ collisions at the LHC Dyndal, M.; Glazov, A.; Luszczak, M. Physical Review D, Vol. 99, Issue 11 https://doi.org/10.1103/physrevd.99.114008	journal	June 2019
Probing the photonic content of the proton using photon-induced dilepton production in p+Pb collisions at the LHC Dyndal, Mateusz; Glazov, Alexander; Luszczak, Marta Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-03016	text	January 2019
Probing the photonic content of the proton using photon-induced dilepton production in $p+\textrm{Pb}$ collisions at the LHC Dyndal, Mateusz; Glazov, Alexander; Luszczak, Marta Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-01138	text	January 2019

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