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Semileptonic B Meson Decays

Journal Article · · Annual Review of Nuclear and Particle Science
 [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
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Semileptonic decays of B mesons play a critical role in the determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements Vcb and Vub. These two quantities are fundamental parameters of the Standard Model and have to be determined experimentally. Over the past decade, the vast samples of B mesons recorded at the B factories at LEP at Cornell University, KEK at Tsukuba, and SLAC at Stanford University have allowed for detailed studies of semileptonic B decays. These decays proceed via first-order weak interactions; thus, they are expected to be free of non–Standard Model contributions and therefore are well suited for the extraction of the quark-mixing parameters. Differential decay rates are combined with theoretical calculations of hadronization effects, leading to a substantially improved knowledge of |Vcb| and |Vub|. The results are used to constrain the parameters of the CKM matrix and to test the Standard Model predictions for CP -violating effects.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1443130
Report Number(s):
SLAC-PUB--14435
Journal Information:
Annual Review of Nuclear and Particle Science, Journal Name: Annual Review of Nuclear and Particle Science Journal Issue: 1 Vol. 61; ISSN 0163-8998
Publisher:
Annual ReviewsCopyright Statement
Country of Publication:
United States
Language:
English

Cited By (4)

Overview of the Cabibbo–Kobayashi–Maskawa matrix† journal November 2012
Angular distribution as an effective probe of new physics in semihadronic three-body meson decays journal July 2019
Branching fraction measurement of B + → ω ℓ + ν decays journal February 2013
Angular distribution as an effective probe of new physics in semi-hadronic three-body meson decays text January 2018

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS