Nota de FísicaPublicado
Heavy to Light Baryon Transition Form Factors
Xin-Heng Guo; Tao Huang; Zuo-Hong Li
1995
Dados da publicação
- Autores
- Xin-Heng Guo; Tao Huang; Zuo-Hong Li
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1995
- Descrição
- Recently, Stech found form factor relations for heavy to light transitions based on two simple dynamical assumptions for spectator partical. In this work we generalize his ap proach to the case of baryons and find that for <math>\Lambda_Q\rightarrow \Lambda (Q = b\ \mbox{or} \ c)</math> only one independent form factor remains in limit <math>m_Q\rightarrow \infty</math>. Furthermore, combining with the model of Guo and Kroll we determine both of the two form factors for <math>\Lambda_Q\rightarrow \Lambda</math> in the heavy quark limit. The results are applied to <math>\Lambda_b\rightarrow \Lambda + J/\psi\!\,</math> which is not clarified both theoretically and experimentally. It is found that the branching ratio of <math>\Lambda_b\rightarrow A+J/\psi\!\,</math> is of order <math>10^{-5}\!\,</math>.
- Ano
- 1995
- Número
- CBPF-NF-078/95
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não