A Simply Modified Single Pole Scenario For B → K^＊ Form Factors  

作　　者：刘少敏 金洪英 

机构地区：[1]Department of Physics, Zhejiang University, Hangzhou 310027

出　　处：《Chinese Physics Letters》2008年第7期2421-2424,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10775117.

摘　　要：We revisit the form factors of B → K^＊ by using the heavy quark limit and large energy limit, assuming that the form factors have single pole forms near the zero recoil. The deviation from the single pole model is taken into account by adding a term proportional to （v. v′ - 1）2. On the other hand, we require the form factors to obey tile large recoil symmetry relationships when v . v′ becomes very large. A self-consistent set of B → K^＊ form factors is found. This set of form factors is checked to be consistent with the experimental data aboutB → K^＊U modes.We revisit the form factors of B → K^＊ by using the heavy quark limit and large energy limit, assuming that the form factors have single pole forms near the zero recoil. The deviation from the single pole model is taken into account by adding a term proportional to （v. v′ - 1）2. On the other hand, we require the form factors to obey tile large recoil symmetry relationships when v . v′ becomes very large. A self-consistent set of B → K^＊ form factors is found. This set of form factors is checked to be consistent with the experimental data aboutB → K^＊U modes.

关 键 词：the power-law exponents PRECIPITATION durative abrupt precipitation change 

分 类 号：O413[理学—理论物理]