【24h】

A flavor sector for the composite Higgs

机译:复合希格斯的调味品行业

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摘要

We discuss flavor violation in large N Composite Higgs models. We focus on scenarios in which the masses of the Standard Model fermions are controlled by hierarchical mixing parameters, as in models of Partial Compositeness. We argue that a separation of scales between flavor and Higgs dynamics can be employed to parametrically suppress dipole and penguin operators, and thus effectively remove the experimental constraints arising from the lepton sector and the neutron EDM. The dominant source of flavor violation beyond the Standard Model is therefore controlled by 4-fermion operators, whose Wilson coefficients can be made compatible with data provided the Higgs dynamics approaches a "walking" regime in the IR. Models consistent with all flavor and electroweak data can be obtained with a new physics scale within the reach of the LHC. Explicit scenarios may be realized in a 5D framework, the new key ingredient being the introduction of flavor branes where the wave functions of the bulk fermions end.
机译:我们将在大型N Composite Higgs模型中讨论违反风味的问题。我们关注的场景是标准模型费米子的质量由分层混合参数控制,如部分合成模型中一样。我们认为,风味和希格斯动力学之间的尺度分离可以用来参数化抑制偶极子和企鹅算子,从而有效地消除了由轻子扇区和中子EDM引起的实验约束。因此,超出标准模型的主要违规风味源由4个费米子算子控制,只要希格斯动力学方法接近IR中的“行走”状态,就可以使其Wilson系数与数据兼容。在LHC可以达到的范围内,可以使用新的物理量表获得与所有风味和电弱数据一致的模型。可以在5D框架中实现明确的方案,新的关键要素是引入风味米糠,而其中的体积费米子的波函数结束了。

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