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arXiv 1503.04159hep-phhep-ex
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矢量夸克偶素和$Z$玻色子的轻子味破坏衰变

Lepton flavor violating decays of vector quarkonia and of the $Z$ boson

Asmaa Abada, Damir Becirevic, Michele Lucente, Olcyr Sumensari

摘要:

我们讨论了不育费米子对夸克偶素和$Z$玻色子轻子味违反衰变的影响。我们计算相关的威尔逊系数,并表明,${\rm B}(V\to\ell_α\ell_β)$,其中$V=ϕ,ψ^{(n)}$,$Υ^{(n)},Z$可以显着增强的情况下,大的无菌费米子群众和不可忽略的活性无菌混合。我们说明了一个特定的最小实现的反跷跷板机制,被称为$(2,3)$ -ISS的功能,并在一个有效的模型,其中存在的非标准的不育费米子参数化的一个重不育(马约拉纳)中微子。

英文摘要:

We address the impact of sterile fermions on the lepton flavor violating decays of quarkonia as well as of the $Z$ boson. We compute the relevant Wilson coefficients and show that the ${\rm B}(V\to\ell_α\ell_β)$, where $V=ϕ,ψ^{(n)}$, $Υ^{(n)},Z$ can be significantly enhanced in the case of large sterile fermion masses and a non-negligible active-sterile mixing. We illustrate that feature in a specific minimal realization of the inverse seesaw mechanism, known as $(2,3)$-ISS, and in an effective model in which the presence of non-standard sterile fermions is parameterized by means of one heavy sterile (Majorana) neutrino.

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