Impact of heavy-flavour production cross sections measured by the LHCb experiment on parton distribution functions at low x
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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- 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)
- Publication Date:
- Grant/Contract Number:
- SC0013681
- Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Volume: 75; Journal Issue: 8; Journal ID: ISSN 1434-6044
- Publisher:
- Springer
- Research Org:
- Southern Methodist Univ., Dallas, TX (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
- OSTI Identifier:
- 1257283
- Free Publicly Accessible Full Text
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Accepted Manuscript (DOE)
- Publisher's Version of Record
- https://doi.org/10.1140/epjc/s10052-015-3618-z