分类: 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间: 2017-09-17
摘要: The #3;b → #3;c 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 nu-merically. Some of the nonleptonic decay modes are discussed in the end.