Impact of heavy-flavour production cross sections measured by the LHCb experiment on parton distribution functions at low x

Zenaiev, O.; Geiser, A.; Lipka, K.; Blumlein, J.; Cooper-Sarkar, A.; Garzelli, M. -V.; Guzzi, M.; Kuprash, O.; Moch, S. -O.; Nadolsky, P.; Placakyte, R.; Rabbertz, K.; Schienbein, I.; Starovoitov, P.

doi:10.1140/epjc/s10052-015-3618-z

Title: Impact of heavy-flavour production cross sections measured by the LHCb experiment on parton distribution functions at low x

Journal Article · Sat Aug 01 00:00:00 EDT 2015 · European Physical Journal. C, Particles and Fields

DOI:https://doi.org/10.1140/epjc/s10052-015-3618-z· OSTI ID:1257283

Zenaiev, O. ^[1]; Geiser, A. ^[1]; Lipka, K. ^[1]; Blumlein, J. ^[1]; Cooper-Sarkar, A. ^[2]; Garzelli, M. -V. ^[3]; Guzzi, M. ^[4]; Kuprash, O. ^[1]; Moch, S. -O. ^[3]; Nadolsky, P. ^[5]; Placakyte, R. ^[1]; Rabbertz, K. ^[6]; Schienbein, I. ^[7]; Starovoitov, P. ^[1]

Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Univ. of Oxford, Oxford (United Kingdom)
Univ. Hamburg, Hamburg (Germany)
Univ. of Manchester, Manchester (United Kingdom)
Southern Methodist Univ., Dallas, TX (United States)
Karlsruhe Inst. of Technology (KIT), Karlsruhe (Germany)
LPSC Grenoble, Grenoble (France)

The impact of recent measurements of heavy-flavour production in deep inelastic ep scattering and in pp collisions on parton distribution functions is studied in a QCD analysis in the fixed-flavour number scheme at next-to-leading order. Differential cross sections of charm- and beauty-hadron production measured by LHCb are used together with inclusive and heavy-flavour production cross sections in deep inelastic scattering at HERA. The heavy-flavour data of the LHCb experiment impose additional constraints on the gluon and the sea-quark distributions at low partonic fractions x of the proton momentum, down to x~5×10^-6. This kinematic range is currently not covered by other experimental data in perturbative QCD fits.

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Research Organization:: Southern Methodist Univ., Dallas, TX (United States)

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

Grant/Contract Number:: SC0013681

OSTI ID:: 1257283

Journal Information:: European Physical Journal. C, Particles and Fields, Vol. 75, Issue 8; ISSN 1434-6044

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 69 works

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