Lifetimes of b-flavoured hadrons

Details Lifetimes of b-flavoured hadrons Lifetimes of b-flavoured hadrons

2000-12-07

arxiv.org/abs/hep-ph/0012086v1

J.Phys.G27:1213-1218,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex, 4 pages, 1 figure. Talk given at the "U.K. Phenomenology Workshop on Heavy Flavours and CP violation" Durham, 17-22 Sep

Scientific paper

10.1088/0954-3899/27/6/318

I discuss the heavy quark expansion for the inclusive widths of heavy-light hadrons, which predicts quite well the experimental ratios of B_q meson lifetimes. As for $\Lambda_b$, current determinations of ${\cal O}(m_b^{-3})$ contribution to $\tau(\Lambda_b)$ do not allow to explain the small measured value of $\tau(\Lambda_b)/\tau(B_d)$. As a final topic, I discuss the implications of the measurement of the B_c lifetime.

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