The production rate of B0s mesons relative to B0 mesons is measured by the LHCb experiment in pp collisions at a center-of-mass energy √s = 13 TeV over the forward rapidity interval 2 < y < 4.5 as a function of the charged particle multiplicity measured in the event. Evidence at the 3.4 σ level is found for an increase of the ratio of B0s to B0 cross sections with multiplicity at transverse momenta below 6 GeV/c, with no significant multiplicity dependence at higher transverse momentum. Comparison with data from e+ e− collisions implies that the density of the hadronic medium may affect the production rates of B mesons. This is qualitatively consistent with the emergence of quark coalescence as an additional hadronization mechanism in high-multiplicity collisions.

Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Evidence for Modification of b Quark Hadronization in High-Multiplicity pp Collisions at √s = 13 TeV. PHYSICAL REVIEW LETTERS, 131(6), 1-11 [10.1103/PhysRevLett.131.061901].

Evidence for Modification of b Quark Hadronization in High-Multiplicity pp Collisions at √s = 13 TeV

Carbone, A;Ferrari, F;Galli, D;Manuzzi, D;Patrignani, C;Villa, A;Zucchelli, S;
2023

Abstract

The production rate of B0s mesons relative to B0 mesons is measured by the LHCb experiment in pp collisions at a center-of-mass energy √s = 13 TeV over the forward rapidity interval 2 < y < 4.5 as a function of the charged particle multiplicity measured in the event. Evidence at the 3.4 σ level is found for an increase of the ratio of B0s to B0 cross sections with multiplicity at transverse momenta below 6 GeV/c, with no significant multiplicity dependence at higher transverse momentum. Comparison with data from e+ e− collisions implies that the density of the hadronic medium may affect the production rates of B mesons. This is qualitatively consistent with the emergence of quark coalescence as an additional hadronization mechanism in high-multiplicity collisions.
2023
Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Evidence for Modification of b Quark Hadronization in High-Multiplicity pp Collisions at √s = 13 TeV. PHYSICAL REVIEW LETTERS, 131(6), 1-11 [10.1103/PhysRevLett.131.061901].
Aaij, R; Abdelmotteleb, A S W; Abellan Beteta, C; Abudinén, F; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Agapopoulou, C; Aidala, C A; Aiola, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/953133
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