Inclusive Semileptonic B and Polarized Lambdab Decays from QCD
Manohar, Aneesh V. · Wise, Mark B.
Original · EN
The differential decay spectrum dΓ/dEₑ dq² for the semileptonic decay of an unpolarized hadron containing a b-quark, and the decay spectrum dΓ/dEₑ dq² dθ for polarized Λb decay are computed to second order in the 1/mb expansion. Most of the 1/mb² corrections have a simple physical interpretation, which is discussed in detail. The implications of the results for the determination of Vub are discussed. The decay spectra for semileptonic decay of hadrons containing a c-quark are also given. There is a subtlety in the use of the equations of motion at order 1/mb² in the heavy quark expansion which is explained.
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