L_b®L_c+a₁ decay in the heavy quark effective theory

R MOHANTA and A K GIRI

Physics Department, Panjab University, Chandigarh 160 014, India

Abstract

Using the heavy quark approximation, we have studied the nonleptonic decay mode L_b ®L_c a₁. We have included nonfactorizable contributions as well as factorizable ones in our analysis. The estimated branching ratio for this process is (1.4 ± 0.1)% and the asymmetry parameter a found to be - 0.8.

Keywords Nonfactorizable contributions; HQET; Isgur-Wise function.

Pacs No 11.30.Hv; 13.30.Eg; 14.20.Mr

| back | | View/Download pdf file |