Analysis of the B -> a(1)(1260) form-factors with light-cone QCD sum rules

作者：Wang Zhi Gang^*

来源：Physics Letters B, 2008, 666(5): 477-482.

DOI：10.1016/j.physletb.2008.08.014

• B meson
• light-cone QCD sum rules

in this article, we calculate the B -> a(1) (1260) form-factors V(1)(q(2)), V(2)(q(2)), V(3)(q(2)) and A(q(2)) with the B-meson light-cone QCD sum rules. Those form-factors are basic parameters in studying the exclusive non-leptonic two-body decays B -> AP and semi-leptonic decays B -> Alv(1), B -> A (l) over barl. Our numerical results are consistent with the values from the (light-cone) QCD sum rules. The main uncertainty comes from the parameter omega(0) (or lambda(B)), which determines the shapes of the two-particle and three-particle light-cone distribution amplitudes of the B-meson, it is of great importance to refine this parameter.

• 出版日期2008-9-11
• 单位华北电力大学