Constraints on the intrinsic charm content of the proton from recent ATLAS data

Bednyakov, V. A.; Brodsky, S. J.; Lipatov, A. V.; Lykasov, Gennady I.; Malyshev, M. A.; Smiesko, J.; Tokar, S.

doi:10.1140/epjc/s10052-019-6605-y

Title: Constraints on the intrinsic charm content of the proton from recent ATLAS data

Journal Article · 30 January 2019 · European Physical Journal. C, Particles and Fields

DOI: https://doi.org/10.1140/epjc/s10052-019-6605-y · OSTI ID:1503403

Bednyakov, V. A. ^[1]; Brodsky, S. J. ^[2]; Lipatov, A. V. ^[3]; Lykasov, Gennady I. ^[1]; Malyshev, M. A. ^[4]; Smiesko, J. ^[5]; Tokar, S. ^[5]

Joint Institute for Nuclear Research, Dubna (Russia)
Stanford Univ., Stanford, CA (United States). SLAC National Accelerator Lab
Joint Institute for Nuclear Research, Dubna (Russia); Moscow State Univ., Moscow (Russia)
Moscow State Univ., Moscow (Russia)
Comenius Univ. in Bratislava, Bratislava (Slovakia)

We investigate the possibility to constrain the intrinsic charm probability w_cc¯ = P_cc¯/p using first ATLAS data on the associated production of prompt photons and charm-quark jets in pp collisions at √s = 8 TeV. The upper limit w_cc¯ < 1.93 % is obtained at the 68 % confidence level. This constraint is primarily determined from the theoretical scale and systematical experimental uncertainties. Suggestions for reducing these uncertainties are discussed. Here, the implications of intrinsic heavy quarks in the proton for future studies at the LHC are also discussed.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1503403

Journal Information:: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 2 Vol. 79; ISSN 1434-6044

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Hard production of a Z boson plus heavy flavor jets at LHC and the intrinsic charm content of a proton Lipatov, A. V.; Lykasov, G. I.; Malyshev, M. A. Physical Review D, Vol. 97, Issue 11 https://doi.org/10.1103/physrevd.97.114019	journal	June 2018
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Parton distribution functions and constraints on the intrinsic charm content of the proton using the Brodsky-Hoyer-Peterson-Saka approach Abdolmaleki, H.; Khorramian, A. Physical Review D, Vol. 99, Issue 11 https://doi.org/10.1103/physrevd.99.116019	journal	June 2019
Production of prompt photons associated with jets at LHC in kT-factorization Malyshev, Maxim; Lipatov, Artem; Jung, Hannes Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2020-00714	text	January 2019

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