With the same constituents of quark and antiquark,the p-wave state has a higher mass than the corresponding s-wave state,but the relativistic corrections are much larger in the processes of which p-wave mesons are inv...With the same constituents of quark and antiquark,the p-wave state has a higher mass than the corresponding s-wave state,but the relativistic corrections are much larger in the processes of which p-wave mesons are involved.Considering this,the relativistic Bethe–Salpeter method is applied to estimate the branching fractions of semileptonic decays B(s)→D^(*)_(sJ)lν(J=0,2).Our predictions are Br[B^(0)_(s)^(-)→D^(*+)_(s0)(2317)l^(-)ν^(-)]=0.50%,Br[B^(0)_(s)^(-)→D^(*+)_(s2)(2573)l^(-)ν^(-)]=0.40%,Br[B^(-)→D^(*)_(0)^(0)(2400)l^(-)ν^(-)]=0.79%,Br[B^(-)→D^(*)_(0)^(2)(2460)l^(-)ν^(-)]=0.28%,Br[B^(0)^(-)→D^(*)_(0)^(+)(2400)l^(-)ν^(-)]=0.58% and Br[B^(0)^(-)→D^(*)_(2)^(+)(2460)l^(-)ν^(-)]=0.27%.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 11175051.
文摘With the same constituents of quark and antiquark,the p-wave state has a higher mass than the corresponding s-wave state,but the relativistic corrections are much larger in the processes of which p-wave mesons are involved.Considering this,the relativistic Bethe–Salpeter method is applied to estimate the branching fractions of semileptonic decays B(s)→D^(*)_(sJ)lν(J=0,2).Our predictions are Br[B^(0)_(s)^(-)→D^(*+)_(s0)(2317)l^(-)ν^(-)]=0.50%,Br[B^(0)_(s)^(-)→D^(*+)_(s2)(2573)l^(-)ν^(-)]=0.40%,Br[B^(-)→D^(*)_(0)^(0)(2400)l^(-)ν^(-)]=0.79%,Br[B^(-)→D^(*)_(0)^(2)(2460)l^(-)ν^(-)]=0.28%,Br[B^(0)^(-)→D^(*)_(0)^(+)(2400)l^(-)ν^(-)]=0.58% and Br[B^(0)^(-)→D^(*)_(2)^(+)(2460)l^(-)ν^(-)]=0.27%.
