A note on spectator effects and quark-hadron duality in inclusive beauty decays

Details A note on spectator effects and quark-hadron duality in inclusive beauty decays A note on spectator effects and quark-hadron duality in inclusive beauty decays

2000-02-29

arxiv.org/abs/hep-ph/0002295v3

Phys.Lett. B489 (2000) 309-312

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, typos corrected, version to be published in PL B

Scientific paper

10.1016/S0370-2693(00)00960-6

In this paper, we evaluate the expectation values of four-quark operators for the inclusive beauty decays from the differences in the inclusive total decay rates, assuming that the heavy quark expansion converges at $O(1/m^3)$. The obtained expectation values yeilds the ratio $\tau(\Lambda_b)/\tau(B)$ close to the experimental onee. We further point out that the quark-hadron duality violation would be rather small allowing predictions of inclusive quantities.

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