A study on the rare radiative decay $B_c \to D_s^*γ$ in technicolor with scalars

Details A study on the rare radiative decay $B_c \to D_s^*γ$ in technicolor with scalars A study on the rare radiative decay $B_c \to D_s^*γ$ in technicolor with scalars

1996-09-06

arxiv.org/abs/hep-ph/9609272v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, Latex, no macros, 3 figures(in Latex), hard copy is available upon request. to appear in Z. Phys. C

Scientific paper

Applying the perturbative QCD (PQCD), we study the process $B_c\rightarrow D_s^*\gamma$ 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 $B_c\rightarrow D_s^* \gamma$ process. One proceeds through the short distance $b\rightarrow s \gamma$ 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 $B_c\rightarrow D_s^*\gamma$ from $\pi_p$ (the physical pions in this model) is small for the allowed mass of $\pi_p$.

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