Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-04-22
Phys.Lett. B381 (1996) 348-352
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex file, 8 pages, 3 ps figures, submitted to Phys. Lett. B
Scientific paper
We study the loop induced rare decays $B_s(B_d)\to\gamma\nu\bar\nu$ within
the standard model. Both constituent quark model and pole model are used and
the branching ratios turn out to be of the orders of $10^{-8}$ for $B_s\to
\gamma \nu \bar \nu $ and $10^{-9}$ for $B_d \to \gamma \nu \bar \nu $. These
processes can be served to determine the decay constants of $B_s$ and $B_d$.
Lu Cai-Dian
Zhang Da-Xin
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