Key Distributions for Charmless Semileptonic B Decay

Details Key Distributions for Charmless Semileptonic B Decay Key Distributions for Charmless Semileptonic B Decay

1997-03-27

arxiv.org/abs/hep-ph/9703437v1

Nucl.Phys.B509:378-388,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 6 figures (incorporated in the LaTeX file); plain LaTeX

Scientific paper

10.1016/S0550-3213(97)00702-5

We present theoretical predictions for a few phenomenologically interesting distributions in the semileptonic b->u decays which are affected by Fermi motion. The perturbative effects are incorporated at the one-loop level and appear to be very moderate. Our treatment of Fermi motion is based directly on QCD, being encoded in the universal distribution function F(x). The decay distributions in the charged lepton energy, invariant mass of hadrons, hadron energy, and q^2 are given. We note that typically about 90% of all decay events are expected to have M_X < M_D; this feature can be exploited in determination of |V_ub|.

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