Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-07-15
Phys.Rev.D64:014003,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
27 pages, 0 figure
Scientific paper
10.1103/PhysRevD.64.014003
The lifetime of the B_c-meson is estimated with consistent considerations on all of the heavy mesons ($B^0, B^\pm, B_s, D^0, D^\pm D_s$) and the double heavy meson B_c. In the estimate, the framework, where the non-spectator effects for nonleptonic decays are taken into account properly, is adopted, and the parameters needed to be fixed are treated carefully and determined by fitting the available data. The bound-state effects in it are also considered. We find that in decays of the meson B_c, the QCD correction terms of the penguin diagrams and the main component terms c_1O_1, c_2O_2 of the effective interaction Lagrangian have direct interference that causes an enhancement about 3 ~ 4% in the total width of the B_c meson.
Chang Chao-Hsi
Chen Shao-Long
Feng Tai-fu
Li Xue-Qian
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