The difference of and indicates the role of the light flavors. We calculate the lifetimes of -meson and based on the weak effective Hamiltonian while assuming the heavy baryon is constructed by a heavy -quark and ...The difference of and indicates the role of the light flavors. We calculate the lifetimes of -meson and based on the weak effective Hamiltonian while assuming the heavy baryon is constructed by a heavy -quark and a diquark containing two light quarks. In this scenario, we use the information of the measured ratio as input to predict rates of the inclusive weak decays of and into non-bottom final states. We find that these rates of and are much larger than those of -mesons and . We also give the predictions for the lifetimes of and . Phenomenological implication of our result is discussed.展开更多
文摘The difference of and indicates the role of the light flavors. We calculate the lifetimes of -meson and based on the weak effective Hamiltonian while assuming the heavy baryon is constructed by a heavy -quark and a diquark containing two light quarks. In this scenario, we use the information of the measured ratio as input to predict rates of the inclusive weak decays of and into non-bottom final states. We find that these rates of and are much larger than those of -mesons and . We also give the predictions for the lifetimes of and . Phenomenological implication of our result is discussed.
