@article{10902/32542,
year = {2023},
month = {9},
url = {https://hdl.handle.net/10902/32542},
abstract = {The dependence of the ratio between the B⁰s and B+ hadron production fractions, ⨍s/⨍u, on the transverse momentum (pT) and rapidity of the B mesons is studied using the decay channels B⁰s → J/ψϕ and Bþ → J=ψK+. 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 ⨍s/⨍u 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 B+ meson production fractions, ⨍s/⨍u, is also measured, for the first time in proton-proton collisions, using the B0 → J=ψK*⁰ 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.},
publisher = {American Physical Society},
publisher = {Physical Review Letters, 2023, 131(12), 121901},
title = {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},
author = {Tumasyan A. and Brochero Cifuentes, Javier Andrés and Cabrillo Bartolomé, José Iban and Calderón Tazón, Alicia and Duarte Campderros, Jorge and Fernández García, Marcos and Fernández Madrazo, Celia and García Alonso, Andrea and Gómez Gramuglio, Gervasio and Lasaosa García, Clara and Martínez Rivero, Celso and Martínez Ruiz del Árbol, Pablo and Matorras Weinig, Francisco and Matorras Cuevas, Pablo and Piedra Gómez, Jonatan and Prieëls, Cedric and Scodellaro, Luca and Vila Álvarez, Iván  and Vizán García, Jesús Manuel},
}