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Title: | Precise measurement of the fs/fd ratio of fragmentation fractions and of B0s decay branching fractions |
Authors: | Aaij, Roel Beteta, Carlos Abellan Eydelman, Semen Isaakovich Kharisova, Anastasiya Evgenjevna Panshin, Gennady Leonidovich |
Issue Date: | 2021 |
Publisher: | American Physical Society |
Citation: | Precise measurement of the fs/fd ratio of fragmentation fractions and of B0s decay branching fractions / R. Aaij, C. A. Beteta, S. I. Eydelman [et al.] // Physical Review D. — 2021. — Vol. 104, iss. 3. — [032005, 20 p.]. |
Abstract: | The ratio of the B0s and B0 fragmentation fractions, fs/fd, in proton-proton collisions at the LHC, is obtained as a function of B-meson transverse momentum and collision center-of-mass energy from the combined analysis of different B-decay channels measured by the LHCb experiment. The results are described by a linear function of the meson transverse momentum or with a function inspired by Tsallis statistics. Precise measurements of the branching fractions of the B0s→J/ψϕ and B0s→D−sπ+ decays are performed, reducing their uncertainty by about a factor of 2 with respect to previous world averages. Numerous B0s decay branching fractions, measured at the LHCb experiment, are also updated using the new values of fs/fd and branching fractions of normalization channels. These results reduce a major source of systematic uncertainty in several searches for new physics performed through measurements of B0s branching fractions. |
URI: | http://earchive.tpu.ru/handle/11683/72774 |
Appears in Collections: | Репринты научных публикаций |
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reprint-nw-37919.pdf | 684,78 kB | Adobe PDF | View/Open |
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