Estimate of the long-distance contribution through b -> s psi to the B-s ->gamma gamma decay rate
MODERN PHYSICS LETTERS A, vol.12, no.37, pp.2837-2846, 1997 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 12 Issue: 37
- Publication Date: 1997
- Doi Number: 10.1142/s021773239700296x
- Journal Name: MODERN PHYSICS LETTERS A
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.2837-2846
- Open Archive Collection: AVESIS Open Access Collection
- Middle East Technical University Affiliated: No
Abstract
The B-s --> phi psi decay is modeled through the inclusive b --> s phi decay. Using the vector meson dominance model, the amplitude for the chain process B-s --> phi psi --> phi gamma --> gamma gamma is estimated and it is found to be at most 4% of the corresponding amplitude from the O-7 type LD contribution. The intermediate amplitude for the process B-s --> phi gamma is compared with the corresponding one obtained by a different approach based on the interaction of the virtual charm quark loop with soft, gluons.(7) Both amplitudes are found to agree within 10%. Further the influence on the branching ratio B(B-s --> gamma gamma)(SD+LDO7) from inclusive b --> s psi is estimated to be less than 1%.