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Large-pT production of D mesons at the LHCb in the parton Reggeization approach
The production of D mesons in proton-proton collisions at the LHCb detector is studied. We consider the single production of D0/D¯0, D±, D*±, and Ds± mesons and correlation spectra in the production of DD¯ and DD pairs at the S=7 TeV and S=13 TeV. In case of the single D-meson production we calcul...
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Published in: | Physical review. D 2016-12, Vol.94 (11) |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | The production of D mesons in proton-proton collisions at the LHCb detector is studied. We consider the single production of D0/D¯0, D±, D*±, and Ds± mesons and correlation spectra in the production of DD¯ and DD pairs at the S=7 TeV and S=13 TeV. In case of the single D-meson production we calculate differential cross sections over transverse momentum pT while in the pair DD¯, DD-meson production the cross sections are calculated over the azimuthal angle difference Δφ, rapidity difference Δy, invariant mass of the pair M and over the pT of the one meson from a pair. The cross sections are obtained at the leading order of the parton Reggeization approach using Kimber-Martin-Ryskin unintegrated parton distribution functions in a proton. To describe the D-meson production we use universal scale-dependent c-quark and gluon fragmentation functions fitted to e+e− annihilation data from CERN LEP1. Our predictions find a good agreement with the LHCb Collaboration data within uncertainties and without free parameters. |
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ISSN: | 2470-0010 2470-0029 |
DOI: | 10.1103/PhysRevD.94.114012 |