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\Lambda_b Lifetime from the HQET Sum Rule
The HQET sum rule analysis for the \Lambda_b matrix element of the four-quark
operator relevant to its lifetime is reported. Our main conclusion is that the
lifetime ratio \tau(\Lambda_b)/\tau(B^0) can be as low as 0.91.Comment: 5 pages, latex, no figures, uses sprocl.sty (included). Talk by C.
Liu at Int. Conf. on Flavor Phys., Zhang-Jia-Jie, 31/5-6/6 200
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