Three-body decay of B-0 -{L-End} > (D)over-bar*(2007)(0)pi(+)pi(-)

摘要

We investigate the B-0 -{L-End} > (D) over bar*(2007)(0)pi(+)pi(-) decay using Dalitz plot analysis. There are two tree diagrams for this decay mode in the factorization approach: the transition matrix element is factorized into B-0 -{L-End} > pi(+)pi(-) form factor multiplied by (D) over bar*(2007)(0) decay constant; and a B-0 -{L-End} > (D) over bar*(2007)(0)pi(-) form factor multiplied by a pi(+) decay constant. In this research we evaluate the matrix elements of the vector and axial vector currents between the B-0 and (D) over bar*(2007)(0)pi(-) meson states by using the B*(+) pole. The contributions of intermediate resonances, such as f(0)(980), f(0)(1370), f(0)(1500) and rho(770), rho(1450), rho(1700), have been taken into account. According to the QCD factorization approach and using Dalitz plot analysis, we calculate the branching ratio of B-0 -{L-End} > (D) over bar*(2007)(0)pi(+)pi(-) decay and obtain 3.81 +/- 1.31 x 10(-4) and 7.49 +/- 2.71 x 10(-4) at the mu = mb and 2m(b) scales, respectively, whereas the experimental result is (6.20 +/- 2.20) x 10(-4).