Precision determination of the Cabibbo-Kobayashi-Maskawa element V(cb)

We extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V(c)} and the most relevant parameters of the heavy quark expansion from data of inclusive semileptonic B decays. Our calculation includes the recently computed O(α(s)Λ(QCD)(2)/m(b)(2)) corrections and a careful estimate of the...

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Published inPhysical review letters Vol. 114; no. 6; p. 061802
Main Authors Alberti, Andrea, Gambino, Paolo, Healey, Kristopher J, Nandi, Soumitra
Format Journal Article
LanguageEnglish
Published United States 13.02.2015
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Abstract We extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V(c)} and the most relevant parameters of the heavy quark expansion from data of inclusive semileptonic B decays. Our calculation includes the recently computed O(α(s)Λ(QCD)(2)/m(b)(2)) corrections and a careful estimate of the residual theoretical uncertainty. Using a recent determination of the charm quark mass, we obtain |V(cb)|=(42.21±0.78)×10(-3) and m(b)(kin)(1  GeV)=(4.553±0.020)  GeV.
AbstractList We extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V(c)} and the most relevant parameters of the heavy quark expansion from data of inclusive semileptonic B decays. Our calculation includes the recently computed O(α(s)Λ(QCD)(2)/m(b)(2)) corrections and a careful estimate of the residual theoretical uncertainty. Using a recent determination of the charm quark mass, we obtain |V(cb)|=(42.21±0.78)×10(-3) and m(b)(kin)(1  GeV)=(4.553±0.020)  GeV.
Author Healey, Kristopher J
Alberti, Andrea
Gambino, Paolo
Nandi, Soumitra
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  organization: Dipartimento di Fisica, Università di Torino and INFN, Torino, 10125 Torino, Italy
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  givenname: Soumitra
  surname: Nandi
  fullname: Nandi, Soumitra
  organization: Physics Department, Indian Institute of Technology, Guwahati 781 039, India
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Snippet We extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V(c)} and the most relevant parameters of the heavy quark expansion from data of...
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Title Precision determination of the Cabibbo-Kobayashi-Maskawa element V(cb)
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