The first measurement of heavy-flavor production by the LHCb experiment in its fixed-target mode is presented. The production of J/ψ and D0 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 sNN=86.6 and 110.4 GeV, respectively. The J/ψ and D0 production cross sections in pHe collisions in the rapidity range [2, 4.6] are found to be σJ/ψ=652±33(stat)±42(syst) nb/nucleon and σD0=80.8±2.4(stat)±6.3(syst) μb/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.

Aaij, R., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., Akar, S., et al. (2019). First Measurement of Charm Production in its Fixed-Target Configuration at the LHC. PHYSICAL REVIEW LETTERS, 122(13), 132002 [10.1103/PhysRevLett.122.132002].

First Measurement of Charm Production in its Fixed-Target Configuration at the LHC

Belloli N.;Borsato M.;Calvi M.;Carniti P.;Cassina L.;Fazzini D.;Gotti C.;Martinelli M.;Petruzzo M.;
2019

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 D0 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 sNN=86.6 and 110.4 GeV, respectively. The J/ψ and D0 production cross sections in pHe collisions in the rapidity range [2, 4.6] are found to be σJ/ψ=652±33(stat)±42(syst) nb/nucleon and σD0=80.8±2.4(stat)±6.3(syst) μb/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.
Articolo in rivista - Articolo scientifico
Charm Production; Fixed-Target
English
2019
122
13
132002
132002
none
Aaij, R., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., Akar, S., et al. (2019). First Measurement of Charm Production in its Fixed-Target Configuration at the LHC. PHYSICAL REVIEW LETTERS, 122(13), 132002 [10.1103/PhysRevLett.122.132002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/242917
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