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Space-like Penguin effects in B_c decays |
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| Authors: | Dong-Sheng Du Zheng-Tao Wei |
| Institution: | (1) CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, P.R. China , CN;(2) Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918(4), Beijing, 100039, P.R. China (e-mail: duds@bepc3.ihep.ac.cn; weizt@hptc5.ihep.ac.cn) , CN |
| Abstract: | The space-like penguin contributions to branching ratios and CP asymmetries in charmless decays of to two pseudoscalar mesons are studied using the next-to-leading order low energy effective Hamiltonian and factorization approximation. Both the gluonic penguin and the electroweak penguin diagrams are considered. In addition the annihilation diagram contributions are also taken in account. We find that the space-like penguin effects are significant. Received: 15 December 1997 / Published online: 23 June 1998 |
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