Exclusive weak radiative Higgs decays in the standard model and beyond

被引：20

作者：

Alte, Stefan ^{[1
,2
]}

Koening, Matthias ^{[1
,2
]}

Neubert, Matthias ^{[1
,2
,3
]}

机构：

[1] Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, D-55099 Mainz, Germany

[2] Johannes Gutenberg Univ Mainz, Mainz Inst Theorect Phys, D-55099 Mainz, Germany

[3] Cornell Univ, Dept Phys, LEPP, Ithaca, NY 14853 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 12期

基金：

欧洲研究理事会;

关键词：

Higgs Physics; Beyond Standard Model; CP violation; PION FORM-FACTOR; ASYMPTOTIC-BEHAVIOR; DISTRIBUTION AMPLITUDES; QCD; LIGHT; FACTORIZATION; BOSON;

D O I：

10.1007/JHEP12(2016)037

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 perform a detailed study of the exclusive Higgs decays h -> MZ and h -> MW, where M is a pseudoscalar or vector meson, using the QCD factorization approach. We allow for the presence of new-physics effects in the form of modified Higgs couplings to gauge bosons and fermions, including the possibility of flavor-changing Higgs couplings. We show that the decays h -> VZ exhibit a strong sensitivity to the effective CP-even and CP-odd h gamma Z couplings. When combined with a measurement of the h -> gamma Z decay rate, this can be used to extract these couplings up to a sign ambiguity in the CP-odd coefficient. Some of the h -> MW decay modes can be used to probe for flavor-violating Higgs couplings involving the top quark.

引用

页数：23

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