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 in | Physical review letters Vol. 114; no. 6; p. 061802 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
13.02.2015
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Online Access | Get more information |
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Summary: | 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. |
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ISSN: | 1079-7114 |