Lepton flavor violation in flavored gauge mediation

被引:29
|
作者
Calibbi, Lorenzo [1 ]
Paradisi, Paride [2 ,3 ,4 ]
Ziegler, Robert [5 ,6 ]
机构
[1] Univ Libre Bruxelles, Serv Phys Theor, B-1050 Brussels, Belgium
[2] Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy
[3] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[4] SISSA, I-34136 Trieste, Italy
[5] Univ Paris 06, Sorbonne Univ, LPTHE, UMR 7589, F-75005 Paris, France
[6] CNRS, LPTHE, UMR 7589, F-75005 Paris, France
来源
EUROPEAN PHYSICAL JOURNAL C | 2014年 / 74卷 / 12期
关键词
CONVERSION; SEARCH; MODELS; MASSES;
D O I
10.1140/epjc/s10052-014-3211-x
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 study the anatomy and phenomenology of lepton flavor violation (LFV) in the context of flavored gauge mediation (FGM). Within FGM, the messenger sector couples directly to the MSSM matter fields with couplings controlled by the same dynamics that explains the hierarchies in the SM Yukawas. Although the pattern of flavor violation depends on the particular underlying flavor model, FGM provides a built-in flavor suppression similar to wave function renormalization or SUSY partial compositeness. Moreover, in contrast to these models, there is an additional suppression of left-right flavor transitions by third-generation Yukawas that in particular provides an extra protection against flavor-blind phases. We exploit the consequences of this setup for lepton flavor phenomenology, assuming that the new couplings are controlled by simple U(1) flavor models that have been proposed to accommodate large neutrino mixing angles. Remarkably, it turns out that in the context of FGM these models can pass the impressive constraints from LFV processes and leptonic electric dipole moments (EDMs) even for light superpartners, therefore offering the possibility of resolving the longstanding muon g - 2 anomaly.
引用
收藏
页码:1 / 20
页数:20
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