Analysis of Lambdab to Lambdac Weak Decays in Heavy Quark Effective Theory
Jong-Phil Lee, Chun Liu, H. S. Song
Abstract
The Lambdab to Lambdac semileptonic decay is analyzed in the framework of heavy quark effective theory to the order of 1/mc and 1/mb. The QCD sum rule and large Nc predictions to the decay form factors are applied. It argues that the subleading baryonic Isgur-Wise function in the large Nc limit vanishes. The decay rates, distributions and asymmetry parameters are calculated numerically. Some of the nonleptonic decay modes are discussed in the end.
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