Global effective-field-theory analysis of new-physics effects in (semi)leptonic kaon decays

被引：70

作者：

Gonzalez-Alonso, Martin ^{[1
]}

Camalich, Jorge Martin ^{[2
]}

机构：

[1] Univ Lyon 1, CNRS, IPN Lyon, Villeurbanne, France

[2] CERN, Dept Theoret Phys, Geneva, Switzerland

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 12期

关键词：

Beyond Standard Model; Effective field theories; Kaon Physics; MINIMAL FLAVOR VIOLATION; RADIATIVE-CORRECTIONS; FORM-FACTORS; LOW-ENERGY; TENSOR INTERACTION; VERTICAL-BAR; CONSTRAINTS; SENSITIVITY; UNITARITY; CHARGE;

D O I：

10.1007/JHEP12(2016)052

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We analyze the decays K -> pi l nu and P -> l nu (P = K, pi, l = e, mu) using a low-energy Effective-Field-Theory approach to parametrize New Physics and study the complementarity with baryon beta decays. We then provide a road map for a global analysis of the experimental data, with all the Wilson coefficients simultaneously, and perform a fit leading to numerical bounds for them and for V-us. A prominent result of our analysis is a reinterpretation of the well-known V-ud-V-us diagram as a strong constraint on new physics. Finally, we reinterpret our bounds in terms of the SU(2)(L) x U(1)Y-invariant operators, provide bounds to the corresponding Wilson coefficients at the TeV scale and compare our results with collider searches at the LHC.

引用

页数：38

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