$1/m_b$ Corrections in the ACCMM Model for Inclusive Semileptonic B Decay

Details $1/m_b$ Corrections in the ACCMM Model for Inclusive Semileptonic B Decay $1/m_b$ Corrections in the ACCMM Model for Inclusive Semileptonic B Decay

1993-12-06

arxiv.org/abs/hep-ph/9312224v1

Phys.Lett.B324:446-450,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages (uses revtex), UCLA/93/TEP/47

Scientific paper

10.1016/0370-2693(94)90221-6

We re-examine the model of Altarelli, Cabibbo, Corb\`{o}, Maiani and Martinelli for inclusive semileptonic B decay, in the light of recent calculations in heavy quark effective theory. The model can be shown to have no~$1/m_b$ corrections, with a suitable definition of the b quark mass~$m_b$. However, we find that the structure of the $1/m_b^2$~terms is incompatible with the predictions of heavy quark effective theory. The numerical significance of this discrepancy is discussed.

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