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

Preprint/Report

PUBDB-2019-04690

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)Extern* ; Garzelli, M. V. ; Lipka, K.DESY* ; Moch, S.-O. ; Cooper-Sarkar, A. ; Olness, F. ; Geiser, A.DESY* ; Sigl, G.

2019

[10.3204/PUBDB-2019-04690]

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Please use a persistent id in citations: doi:10.3204/PUBDB-2019-04690

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 production 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 $x\approx10^{-6}$. The impact of the resulting parton distribution function in the predictions for the prompt atmospheric-neutrino fluxes is studied.

Note: * Temporary entry *

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