Rare decays B\to Mν\barν in the TC2 model and the LHT model

Abstract

In the framework of the topcolor-assisted technicolor ($TC2$) model and the littlest Higgs model with $T$-parity ($LHT$ model), we consider the rare B decays $B\to M\nu \bar{\nu }$ with $M=\pi ,K,\rho ,$ or $K^{\ast }$. We find that the contributions of the $TC2$ model to the branching ratios of these decay processes are larger than those for the $LHT$ model. The experimental upper limits for some branching ratios can give severe constraints on the free parameters of the $TC2$ model.

25 pages, 7 figures

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Cited by in corpus (2)

• Analysis of the semileptonic ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ transition in topcolor-assisted technicolor (TC2) model
• The flavor-changing bottom-strange quark production in the littlest Higgs model with T parity at the ILC