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arXiv 1008.0280hep-ph
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双轻子双夸克算符的约束

Constraints on two-lepton, two quark operators

Michael Carpentier, Sacha Davidson

摘要:

标准模型之外的物理学,例如细夸克,可以诱导出四个费米子算符,包括夸克、反夸克、轻子和反轻子。我们更新(味依赖)约束的系数,这种相互作用,碰撞机搜索接触相互作用,介子衰变和其他罕见的过程。然后,我们天真的估计系数的大小,可能会出现在纹理模型或从动力学项系数的逆层次结构。这些估计表明,罕见的K介子衰变可能是寻找这种运营商的好地方。

英文摘要:

Physics from beyond the Standard Model, such as leptoquarks, can induce four fermion operators involving a quark, an anti-quark, a lepton and an anti-lepton. We update the (flavour dependent) constraints on the coefficients of such interactions, arising from collider searches for contact interactions, meson decays and other rare processes. We then make naive estimates for the magnitude of the coefficients, as could arise in texture models or from inverse hierarchies in the kinetic term coefficients. These estimates suggest that rare Kaon decays could be a good place to look for such operators.

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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