B decay and the Upsilon mass

Details B decay and the Upsilon mass B decay and the Upsilon mass

1998-09-17

arxiv.org/abs/hep-ph/9809423v1

Phys.Rev.Lett. 82 (1999) 277-280

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages revtex

Scientific paper

10.1103/PhysRevLett.82.277

Theoretical predictions for inclusive semileptonic B decay rates are rewritten in terms of the Upsilon(1S) meson mass instead of the b quark mass, using a modified perturbation expansion. This method gives theoretically consistent and phenomenologically useful results. Perturbation theory is well behaved, and the largest theoretical error in the predictions coming from the uncertainty in the quark mass is eliminated. The results are applied to the determination of $|V_{cb}|$, $|V_{ub}|$, and $\lambda_1$.

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