Improved constraints on parton distributions using LHCb, ALICE and HERA heavy-flavour measurements and implications for the predictions for prompt atmospheric-neutrino fluxes

Zenaiev, Oleksandr; Moch, S.-O.; Cooper-Sarkar, Amanda; Garzelli, M. V.; Olness, F.; PROSA Collaboration; Geiser, A.; Lipka, K.; Sigl, G.

doi:10.1007/JHEP04(2020)118

Report/Journal Article

PUBDB-2020-01631

Improved constraints on parton distributions using LHCb, ALICE and HERA heavy-flavour measurements and implications for the predictions for prompt atmospheric-neutrino fluxes

Zenaiev, O. (Corresponding author) ; Garzelli, M. V.Extern* ; Lipka, K.DESY* ; Moch, S.-O.Extern* ; Cooper-Sarkar, A. ; Olness, F.Extern* ; Geiser, A.DESY* ; Sigl, G.Extern* ; PROSA Collaboration (Collaboration Author)

2020
SISSA [Trieste]

Journal of high energy physics 2004(4), 118 (2020) [10.1007/JHEP04(2020)118]

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Please use a persistent id in citations: doi:10.1007/JHEP04(2020)118 doi:10.3204/PUBDB-2020-01631

Report No.: DESY-19-211; arXiv:1911.13164

Abstract: The impact of measurements of heavy-flavour production in deep inelastic ep scattering and in pp collisions on parton distribution functions is studied in a QCD analysis at next-to-leading order. Recent combined results of inclusive and heavy-flavour produc- tion cross sections in deep inelastic scattering at HERA are investigated together with heavy-flavour production measurements at the LHC. Differential cross sections of charm- and beauty-hadron production measured by the LHCb collaboration at the centre-of-mass energies of 5, 7 and 13 TeV as well as the recent measurements of the ALICE experiment at the centre-of-mass energies of 5 and 7 TeV are explored. These data impose additional constraints on the gluon and the sea-quark distributions at low partonic fractions x of the proton momentum, down to x ≈ 10$^{−6}$. The impact of the resulting parton distribution function in the predictions for the prompt atmospheric-neutrino fluxes is studied.[graphic not available: see fulltext]

Keyword(s): parton: distribution function ; heavy quark: production ; p p: scattering ; higher-order: 1 ; electron p: deep inelastic scattering ; DESY HERA Stor ; ALICE ; LHC-B ; differential cross section ; quantum chromodynamics ; CERN LHC Coll ; charm: production ; bottom: production ; gluon ; quark: sea ; small-x ; neutrino: flux

Classification:

ddc:530

Note: * Temporary entry *

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Research Program(s):

611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

Appears in the scientific report 2020

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Creative Commons Attribution CC BY 4.0

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