Flavor with a light dynamical "Higgs particle''

被引:51
作者
Alonso, R. [1 ,2 ]
Gavela, M. B. [1 ,2 ,3 ]
Merlo, L. [1 ,2 ,3 ,4 ]
Rigolin, S. [5 ,6 ]
Yepes, J. [1 ,2 ]
机构
[1] Univ Autonoma Madrid, Dept Fis Teor, IFT UAM CSIC, E-28049 Madrid, Spain
[2] Univ Autonoma Madrid, Inst Fis Teor, IFT UAM CSIC, E-28049 Madrid, Spain
[3] CERN, Div Theory, Dept Phys, CH-1211 Geneva 23, Switzerland
[4] Tech Univ Munich, TUM Inst Adv Study, D-85748 Garching, Germany
[5] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy
[6] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
基金
欧洲研究理事会;
关键词
COMPOSITE HIGGS; BROKEN SYMMETRIES; BREAKING; VIOLATION; MASS; CONSTRAINTS; QUARKS; BOSON;
D O I
10.1103/PhysRevD.87.055019
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The Higgs-fermion couplings are sensitive probes of possible new physics behind a stable light Higgs particle. It is then essential to identify the flavor pattern of those interactions. We consider the case in which a strong dynamics lies behind a light Higgs and explore the implications within the minimal flavor violation ansatz. The dominant effects on flavor-changing Higgs-fermion couplings stem in this context from operators with mass dimension <= 5, and we analyze all relevant chiral operators up to that order, including loop corrections induced by four-dimensional ones. Bounds on the operator coefficients are derived from a plethora of low-energy flavor transitions, providing a guideline on which flavor-changing Higgs interactions may be open to experimental scrutiny. In particular, the coefficient of a genuinely CP-odd operator is only softly constrained and therefore its impact is potentially interesting. DOI: 10.1103/PhysRevD.87.055019
引用
收藏
页数:16
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