تقرير
Impact of heavy-flavour production cross sections measured by the LHCb experiment on parton distribution functions at low x
| العنوان: | Impact of heavy-flavour production cross sections measured by the LHCb experiment on parton distribution functions at low x |
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| المؤلفون: | Zenaiev, Oleksandr, Geiser, Achim, Lipka, Katerina, Blümlein, Johannes, Cooper-Sarkar, Amanda, Garzelli, Maria-Vittoria, Guzzi, Marco, Kuprash, Oleg, Moch, Sven-Olaf, Nadolsky, Pavel, Placakyte, Ringaile, Rabbertz, Klaus, Schienbein, Ingo, Starovoitov, Pavel |
| سنة النشر: | 2015 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
| الوصف: | 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 $x \sim 5 \times 10^{-6}$. This kinematic range is currently not covered by other experimental data in perturbative QCD fits. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1140/epjc/s10052-015-3618-z |
| URL الوصول: | http://arxiv.org/abs/1503.04581 |
| رقم الأكسشن: | edsarx.1503.04581 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1140/epjc/s10052-015-3618-z |
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