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Título:	Measurement of the dependence of the hadron production fraction ratios fs/fu and fd/fu on B meson kinematic variables in proton-proton collisions at √s = 13 TeV
Autor:	Tumasyan, Armen; Brochero Cifuentes, J. A. CSIC ORCID; Cabrillo, I. J. CSIC ORCID ; Calderon, Alicia ; Duarte Campderros, J. CSIC ORCID ; Fernández-García, Marcos CSIC ORCID ; Fernandez Madrazo, C. CSIC ORCID; García Alonso, A. CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Lasaosa, Clara CSIC ORCID; Martínez-Rivero, Celso CSIC ORCID ; Martínez Ruiz del Arbol, P. CSIC ORCID; Matorras, Francisco CSIC ORCID ; Piedra, Jonatan CSIC ORCID ; Prieels, C. CSIC; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vizán, J. CSIC ORCID; CMS Collaboration
Fecha de publicación:	2023
Editor:	American Physical Society
Citación:	Physical Review Letters 131(12): 121901 (2023)
Resumen:	The dependence of the ratio between the B0s and Bþ hadron production fractions, fs=fu, on the transverse momentum (pT) and rapidity of the B mesons is studied using the decay channels B0s → J=ψϕ and Bþ → J=ψKþ. The analysis uses a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 61.6 fb−1. The fs=fu ratio is observed to depend on the B pT and to be consistent with becoming asymptotically constant at large pT. No rapidity dependence is observed. The ratio of the B0 to Bþ meson production fractions, fd=fu, is also measured, for the first time in proton-proton collisions, using the B0 → J=ψK0 decay channel. The result is found to be within 1 standard deviation of unity and independent of pT and rapidity, as expected from isospin invariance.
Descripción:	CMS Collaboration: A. Tumasyan et al.
Versión del editor:	https://doi.org/10.1103/PhysRevLett.131.121901
URI:	http://hdl.handle.net/10261/349719
DOI:	10.1103/PhysRevLett.131.121901
E-ISSN:	1079-7114
Aparece en las colecciones:	(IFCA) Artículos