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Title: Semi-inclusive studies of semileptonic B s decays at Belle

Journal Article · · Physical Review. D, Particles, Fields, Gravitation and Cosmology
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We present an analysis of the semi-inclusive decays B s D s - X + ν and B s D s * - X + ν , where X denotes a final state that may consist of additional hadrons or photons and is an electron or muon. The studied B s decays are contained in the 121.4 fb - 1 Υ ( 5 S ) data sample collected by the Belle detector at the KEKB asymmetric-energy e + e - collider. The branching fractions of the decays are measured to be B ( B s D s - X + ν ) = [ 8.2 ± 0.2 ( stat ) ± 0.6 ( syst ) ± 1.4 ( ext ) ] % and B ( B s D s * - X + ν ) = [ 5.4 ± 0.4 ( stat ) ± 0.4 ( syst ) ± 0.9 ( ext ) ] % , where the first two uncertainties are statistical and systematic and the last is due to external parameters. The measurement also provides an estimate of the B s ( * ) B ¯ s ( * ) production cross section, σ ( e + e - B s ( * ) B ¯ s ( * ) ) = [ 53.8 ± 1.4 ( stat ) ± 4.0 ( syst ) ± 3.4 ( ext ) ] pb , at the center-of-mass energy s = 10.86 GeV .

Research Organization:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
Belle Collaboration
Grant/Contract Number:
SC0009973
OSTI ID:
1594409
Alternate ID(s):
OSTI ID: 1224150
Report Number(s):
PNNL-SA-115348; PRVDAQ; TRN: US2101552
Journal Information:
Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 92, Issue 7; ISSN 1550-7998
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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