1996/09/06 by Gongru Lu, Lu, Gongru, Yigang Cao +5
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9609272
16 pages, Latex, no macros, 3 figures(in Latex), hard copy is available upon request. to appear in Z. Phys. C
arxiv created 1996/09/06 · openalex publication_date 1996/09/06 · arxiv updated 2009/11/30 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
Applying the perturbative QCD (PQCD), we study the process Bc→ Ds^*γ in the technicolor with a massless scalar doublet model (TCMLSM) recently presented by C. D. Carone and H. Georgi; and compare the results with that estimated in the standard model (SM). There are two mechanisms which contribute to the Bc→ Ds^* γ process. One proceeds through the short distance b→ s γ transition, the other through weak annihilation accompanied by a photon emission. In the SM, these two processes are found to contribute with the same order of magnitude. In the TCMLSM, the modification of Bc→ Ds^*γ from πp (the physical pions in this model) is small for the allowed mass of πp.