Abstract

We report a measurement of the first four moments of the hadronic mass distribution in B --> X_c lv decays. The measurements are based on 89 million Upsilon(4S) --> BBbar events where the hadronic decay of one of the B mesons is fully reconstructed and a charged lepton from the decay of the other B meson is identified. The moments are presented for minimum lepton momenta ranging from 0.9 to 1.6 GeV in the B rest frame. It is expected that such measurements will lead to improved determinations of |V_{cb}| and |V_{ub}|.

Highlights

  • We report a measurement of the first four moments of the hadronic mass distribution in B →XcᐉϪ␯ decays

  • The measurements are based on 89 million ⌼

  • The moments are presented for minimum lepton momenta ranging from

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Summary

RAPID COMMUNICATIONS

Measurements of moments of the hadronic mass distribution in semileptonic B decays. B. We report a measurement of the first four moments of the hadronic mass distribution in B →XcᐉϪ␯ decays. It is expected that such measurements will lead to improved determinations ofVcbandVub

In this paper we report measurements of the first four moments
ESϭ ͱs
MC simulations in bins of truesee
We can express the fully corrected hadronic mass momentM Xnas
Radiative corrections
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