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Title: First Measurement of Charm Production in its Fixed-Target Configuration at the LHC
Author: Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Cromodinàmica quàntica
Col·lisions d'ions pesats
Quantum chromodynamics
Heavy ion collision
Issue Date: 2-Apr-2019
Publisher: American Physical Society
Abstract: The first measurement of heavy-flavor production by the LHCb experiment in its fixed-target mode is presented. The production of J / ψ and D 0 mesons is studied with beams of protons of different energies colliding with gaseous targets of helium and argon with nucleon-nucleon center-of-mass energies of √ s NN = 86.6 and 110.4 GeV, respectively. The J / ψ and D 0 production cross sections in p He collisions in the rapidity range [2, 4.6] are found to be σ J / ψ = 652 ± 33 ( stat ) ± 42 ( syst )       nb / nucleon and σ D 0 = 80.8 ± 2.4 ( stat ) ± 6.3 ( syst )     μ b / nucleon , where the first uncertainty is statistical and the second is systematic. No evidence for a substantial intrinsic charm content of the nucleon is observed in the large Bjorken- x region.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2019, vol. 122, num. 13, p. 132002
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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