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Measurement of the ratio B(B-s(0) -˃ J/psi f(0)(980))/B(B-s(0) -˃ J/psi phi(1020)) in pp collisions at root s=7 TeV

Title
Measurement of the ratio B(B-s(0) -˃ J/psi f(0)(980))/B(B-s(0) -˃ J/psi phi(1020)) in pp collisions at root s=7 TeV
Author
김태정
Keywords
VIOLATING PHASE PHI(S); (B)OVER-BAR(S)(0); DECAY
Issue Date
2016-05
Publisher
ELSEVIER SCIENCE BV
Citation
PHYSICS LETTERS B, v. 756, Page. 84-102
Abstract
A measurement of the ratio of the branching fractions of the B-s(0) meson to J/psi f(0)(980) and to J/psi phi(1020) is presented. The J/psi, f(0)(980), and phi(1020) are observed through their decays to mu(+)mu(-), pi(+)pi(-), and K+K-, respectively. The f(0) and the phi are identified by requiring |M-pi+(pi)- - 974 MeV| < 50 MeV and |M-K+(K)- - 1020 MeV| < 10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3fb(-1). The measured ratio is B(B-s(0) -> J/psi f(0)) B(f(0) ->pi(+)pi(-))/B(B-s(0) -> J/psi phi) B(phi -> K+K-)= 0.140 +/- 0.008 (stat) +/- 0.023 (syst), where the first uncertainty is statistical and the second is systematic. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license.
URI
https://www.sciencedirect.com/science/article/pii/S037026931600143X?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/71403
ISSN
0370-2693; 1873-2445
DOI
10.1016/j.physletb.2016.02.047
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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