利用推广因子化方法,研究b→u右手流对B-→ρ-ρ0衰变的影响.发现最新实验数据支持右手流混合强度取负值,横向极化比f⊥/f‖对右手流很敏感,可以作为以后实验检验该系统右手流的物理参量.
Using the method of generalized factorization,we study the effect of b→u right-handed currents in the B-→ρ-ρ0 decays.We find(i) the latest(2009) data support the negative mixture of right-handed currents;(ii) f⊥/f‖ is very sensitive to the right-handed currents,and its measurement may test the chirality of the couplings in B decays.