Szczegóły publikacji
Opis bibliograficzny
Measurement of the dependence of the hadron production fraction ratios $f_{s}/f_{u}$ and $f_{d}/f_{u}$ on B meson kinematic variables in proton-proton collisions at $\sqrt{s}=13$ TeV / A. Tumasyan, [et al.], V. AVATI, L. GRZANKA, M. MALAWSKI, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2023 — vol. 131 iss. 12 art. no. 121901, s. 121901-1–121901-18. — Bibliogr. s. 121901-5–121901-6, Abstr. — Publikacja dostępna online od: 2023-09-19
Autorzy (2326)
- AGHAvati Valentina
- AGHGrzanka Leszek
- AGHMalawski Maciej
- Tumasyan Armen
Dane bibliometryczne
ID BaDAP | 149479 |
---|---|
Data dodania do BaDAP | 2023-11-14 |
Tekst źródłowy | URL |
DOI | 10.1103/PhysRevLett.131.121901 |
Rok publikacji | 2023 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Creative Commons | |
Czasopismo/seria | Physical Review Letters |
Abstract
The dependence of the ratio between the B0s and B+ 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 B+→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 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 B+ meson production fractions, fd/fu, 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.