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 √s_NN = 86.6 and 110.4 GeV, respectively. The J/ψ and D0 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_D0 = 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), 1-12 [10.1103/PhysRevLett.122.132002].

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

Betti, F.;Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Perazzini, S.;Pisani, F.;Vagnoni, V.;Zucchelli, S.
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 √s_NN = 86.6 and 110.4 GeV, respectively. The J/ψ and D0 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_D0 = 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.
2019
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), 1-12 [10.1103/PhysRevLett.122.132002].
Aaij, R.; Adeva, B.; Adinolfi, M.; Aidala, C.A.; Ajaltouni, Z.; Akar, S.; Albicocco, P.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/688209
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