Pade-Improved Estimate of Perturbative Contributions to Inclusive Semileptonic $b\to u$ Decays

Details Pade-Improved Estimate of Perturbative Contributions to Inclusive Semileptonic $b\to u$ Decays Pade-Improved Estimate of Perturbative Contributions to Inclusive Semileptonic $b\to u$ Decays

2000-10-05

arxiv.org/abs/hep-ph/0010045v1

Int.J.Mod.Phys. A16S1B (2001) 642-644

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, latex, write-up of talk presented at DPF 2000

Scientific paper

10.1142/S0217751X01007686

Pade-approximant methods are used to estimate the three-loop perturbative
contributions to the inclusive semileptonic $b \to u$ decay rate. These
improved estimates of the decay rate reduce the theoretical uncertainty in the
extraction of the CKM matrix element $|V_{ub}|$ from the measured inclusive
semileptonic branching ratio.

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