DOI 10.1007/s100529800883
Space-like Penguin effects in Bc decays
Dong-Sheng Du1,2 - Zheng-Tao Wei2
1 CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, P.R. China
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)
Received: 15 December 1997 / Published online: 23 June 1998
Abstract
The space-like penguin contributions to branching
ratios and CP asymmetries in charmless decays of Bc 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.
Copyright Springer-Verlag
