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arXiv 0901.3266hep-ph
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非粒子诱导轻子味破坏衰变τ^- ->l^-(V^0,~P^0)

Unparticle-Induced Lepton Flavor Violating Decays τ^- ->l^- (V^0, ~P^0)

Zuo-Hong Li, Ying Li, Hong-Xia Xu

摘要:

本文在非粒子物理的背景下,研究了轻子味破坏(LFV)衰变$τ\to \ell (V^0, P^0)$,其中$\ell=e$或$μ$和$V^0(P^0)$是中性矢量(赝标量)介子.从所有可用的实验数据的相关耦合参数的约束条件进行了系统的研究,并适当指定的参数值。结果表明,在实验所允许的整个参数空间内,所有的$τ\to \ell P^0$模的分支比都太小,以至于实验上无法测量,而在一个大的子空间内,所有的$τ\to \ell V^0$模同时得到一个高达${\cal O}(10^{-10}-10^{-8})$的分支比,这在LHC和超级B工厂是可以达到的。得出了重要的影响。

英文摘要:

We make an evaluation of the lepton flavor violating (LFV) decays $τ\to \ell (V^0, P^0)$, where $\ell=e$ or $μ$ and $V^0(P^0)$ is a neutral vector (pseudo-scalar) meson, in the context of unparticle physics. The constraints are investigated systematically on the related coupling parameters from all the available experimental data, and the parameter values are specified appropriately. The results show that whereas over the whole parameter space allowed by experiments all the $τ\to \ell P^0$ modes have a branching ratio too small to be measurable experimentally, in a large subspace as observed all of the $τ\to \ell V^0$ modes get simultaneously a branching ratio as high as ${\cal O}(10^{-10}-10^{-8})$, which is reachable at the LHC and super B factory. The important implications are drawn.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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