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

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

2010-02-10

arxiv.org/abs/1002.2010v2

Nucl. Phys. B832(2010)342-357

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 7 figures

Scientific paper

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.

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