Measurement of the moments of the photon energy spectrum in decays <?format ?>and determination of and at Belle
C Schwanda, P Urquijo, E Barberio, A Limosani… - Physical Review D …, 2008 - APS
C Schwanda, P Urquijo, E Barberio, A Limosani, I Adachi, H Aihara, K Arinstein, T Aushev…
Physical Review D—Particles, Fields, Gravitation, and Cosmology, 2008•APSUsing the previous Belle measurement of the inclusive photon energy in B→ X s γ decays,
we determine the first and second moments of this spectrum for minimum photon energies in
the B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with
recent Belle data on the lepton energy and hadronic mass moments in B→ X c ℓ ν decays,
we perform fits to theoretical expressions derived in the 1S and kinetic mass schemes and
extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V cb, the b-quark …
we determine the first and second moments of this spectrum for minimum photon energies in
the B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with
recent Belle data on the lepton energy and hadronic mass moments in B→ X c ℓ ν decays,
we perform fits to theoretical expressions derived in the 1S and kinetic mass schemes and
extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V cb, the b-quark …
Using the previous Belle measurement of the inclusive photon energy in decays, we determine the first and second moments of this spectrum for minimum photon energies in the meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with recent Belle data on the lepton energy and hadronic mass moments in decays, we perform fits to theoretical expressions derived in the 1S and kinetic mass schemes and extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element , the -quark mass, and other nonperturbative parameters. In the 1S scheme analysis we find |Vcb|=(41.56±0.68(fit)±0.08(τB))×10-3 and . In the kinetic scheme, we obtain |Vcb|=(41.58±0.69(fit)±0.08(τB)±0.58(th))×10-3 and .
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