Study of the production of A(b)(0) and (B)over-bar(0) hadrons in pp collisions and first measurement of the A(b)(0)-> J/psi pK(-) branching fraction
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Published version
Accepted version
Author(s)
Type
Journal Article
Abstract
The product of the differential production cross-section and the branching fraction of the decay is measured as a function of the beauty hadron transverse momentum, pT, and rapidity, y. The kinematic region of the measurements is pT < 20 GeV/c and 2.0 < y < 4.5. The measurements use a data sample corresponding to an integrated luminosity of 3fb−1 collected by the LHCb detector in pp collisions at centre-of-mass energies in 2011 and in 2012. Based on previous LHCb results of the fragmentation fraction ratio the branching fraction of the decay is measured to be
where the first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the branching fraction of the decay B̅0 → J/ψK̅*(892)0, and the fourth is due to the knowledge of . The sum of the asymmetries in the production and decay between and is also measured as a function of pT and y. The previously published branching fraction of , relative to that of , is updated. The branching fractions of are determined.
where the first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the branching fraction of the decay B̅0 → J/ψK̅*(892)0, and the fourth is due to the knowledge of . The sum of the asymmetries in the production and decay between and is also measured as a function of pT and y. The previously published branching fraction of , relative to that of , is updated. The branching fractions of are determined.
Date Issued
2016-01-31
Date Acceptance
2015-09-01
Citation
Chinese Physics C, 2016, 40 (1)
ISSN
1674-1137
Publisher
IOP Publishing
Journal / Book Title
Chinese Physics C
Volume
40
Issue
1
Copyright Statement
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further
distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded
by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy
of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded
by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy
of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
License URL
Subjects
Science & Technology
Physical Sciences
Physics, Nuclear
Physics, Particles & Fields
Physics
production cross-section
branching fraction
b hadrons
proton-proton collisions
DECAY
DISTRIBUTIONS
STATISTICS
TOOL
Publication Status
Published
Article Number
011001