Rare K-Decays and its Strong Constraints on the Multiscale Walking Technicolor Model

Xiao Zhenjun; Lu Linxia; Zhang Jinyu; Guo Hongkai; Lu Gongru

Chinese Physics C> 1999, Vol. 23> Issue(11) : 1070-1077

Rare K-Decays and its Strong Constraints on the Multiscale Walking Technicolor Model

Department of Physics, Henan Normal University, Xinxiang, 453002

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Abstract：
We calculate the one-loop Z⁰-penguin contributions to the rare K-decays,K⁺→π⁺νν,K_L→π⁰νν and K_L→μ⁺μ^－, from the unit-charged pesudo-Goldstone bosons π₁ and π₈ in the framework of the Multiscale Walking Technicolor Model. We find that: (a) the π₁ and π₈ can provide one to three orders enhancements to the branching ratios of the rare K-decays under study; (b) the assumed mass ranges of the unit-charged PGBs in the Multiscale Walking Technicolor Model are excluded by the rare K-decay data. According to this and other relavent studies, one finds that the Multiscale Walking Technicolor Model are conflict with the data and therefore excluded.

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Xiao Zhenjun, Lu Linxia, Zhang Jinyu, Guo Hongkai and Lu Gongru. Rare K-Decays and its Strong Constraints on the Multiscale Walking Technicolor Model[J]. Chinese Physics C, 1999, 23(11): 1070-1077.

Xiao Zhenjun, Lu Linxia, Zhang Jinyu, Guo Hongkai and Lu Gongru. Rare K-Decays and its Strong Constraints on the Multiscale Walking Technicolor Model[J]. Chinese Physics C, 1999, 23(11): 1070-1077. shu

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Received: 1998-12-26
Revised: 1900-01-01

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