WEAK RADIATIVE DECAYS OF BOTTOM BARYONS
| Autor: | A. K. Maiti, S. Kola, D. P. Bhattacharyya |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Physics
Nuclear and High Energy Physics Top quark Particle physics Branching fraction Nuclear Theory High Energy Physics::Phenomenology Quark model Hadron Astronomy and Astrophysics Bottom quark Atomic and Molecular Physics and Optics Nuclear physics Charmed baryons Baryon Radiative transfer High Energy Physics::Experiment Nuclear Experiment |
| Zdroj: | International Journal of Modern Physics A. 18:4811-4816 |
| ISSN: | 1793-656X 0217-751X |
| DOI: | 10.1142/s0217751x03015921 |
| Popis: | Weak radiative decays of charmed baryons into strange baryons induced by the electromagnetic Penguin, are estimated by using quark model approach. Heavy quark effective theory and poles are used to derive the branching ratios of $\Omega^-_b \rightarrow \Omega^- \gamma$ and our calculated result is $B_r(\Omega^-_b\rightarrow \Omega^- \gamma) = 3.2 \times 10^{-5}$. The electromagnetic penguin contribution to Ωb → Ωγ is estimated by two methods and its calculated branching ratio is of the order ~ 10-5. Hence we conclude that weak radiative decays of bottom hadrons are dominated by the short-distance b → sγ mechanism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|