Measurement of the Dependence of the Hadron Production Fraction Ratios <i>f<sub>s</sub></i>/<i>f<sub>u</sub></i> and <i>f<sub>d</sub></i>/<i>f<sub>u</sub></i> on <i>B</i> Meson Kinematic Variables in Proton-Proton Collisions at √<i>s</i>=13 TeV
PHYSICAL REVIEW LETTERS, vol.131, no.12, 2023 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 131 Issue: 12
- Publication Date: 2023
- Doi Number: 10.1103/physrevlett.131.121901
- Journal Name: PHYSICAL REVIEW LETTERS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Compendex, INSPEC, zbMATH, DIALNET
- Open Archive Collection: AVESIS Open Access Collection
- Istanbul University-Cerrahpasa Affiliated: No
Abstract
The dependence of the ratio between the B-s(0) and B+ hadron production fractions, f(s)/f(u), on the transverse momentum (p(T)) and rapidity of the B mesons is studied using the decay channels B-s(0) -> J/psi phi and B+ -> J/psi K+. 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 f(s)/f(u) ratio is observed to depend on the B p(T) and to be consistent with becoming asymptotically constant at large p(T). No rapidity dependence is observed. The ratio of the B-0 to B+ meson production fractions, f(d)/f(u), is also measured, for the first time in proton-proton collisions, using the B-0 -> J/psi K*(0) decay channel. The result is found to be within 1 standard deviation of unity and independent of p(T) and rapidity, as expected from isospin invariance.