1999/08/07 by Rukmani Mohanta, A K Giri, Anjan K. Giri +5 · 23 citations
Physics and Astronomy · #B meson #Bottom quark #Branching fraction #Covariant transformation #High-Energy Particle Collisions Research #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quark #Quark model #Quarkonium #Radiative transfer #Top quark #Vector meson dominance #hep-ph
paper · pdf · doi:10.1143/ptp.102.645
published in Progress of Theoretical Physics 102(3), 645-652 (Oxford University Press) · 8 pages, uses ptptex.sty
arxiv created 1999/08/07 · openalex publication_date 1999/09/01 · arxiv updated 2009/11/30 · openalex created_date 2017/04/07 · openalex updated_date 2026/08/05
Motivated by the observation of the decay B → K* γ by the CLEO collaboration, we have systematically analyzed the weak radiative decay Λb → Λ γ, evaluating the confined effects of quarks in the covariant oscillator quark model. This decay process receives both short distance (electromagnetic penguins at the one loop level) and long distance contributions in the quark level. The long distance contributions are analyzed using the vector meson dominance (VMD) method. The estimated branching ratio is found to be 0.23 × 10−5.