The first string-derived eclectic flavor model with realistic phenomenology

Journal of High Energy Physics

Regular Article - Theoretical Physics

Hans Peter Nilles¹  Saúl Ramos-Sánchez²  Andreas Trautner³  Patrick K. S. Vaudrevange⁴  Alexander Baur⁵ 

[1] Bethe Center for Theoretical Physics and Physikalisches Institut der Universität Bonn, Nussallee 12, 53115, Bonn, Germany;Instituto de Física, Universidad Nacional Autónoma de México, POB 20-364, 01000, Cd.Mx., México;Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany;Physik Department, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany;Physik Department, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany;Instituto de Física, Universidad Nacional Autónoma de México, POB 20-364, 01000, Cd.Mx., México;

关键词: Discrete Symmetries;    String Models;    Superstrings and Heterotic Strings;    Theories of Flavour;   

DOI  :  10.1007/JHEP09(2022)224

 received in 2022-07-27, accepted in 2022-09-08,  发布年份 2022

来源: Springer

【 摘 要 】

Eclectic flavor groups arising from string compactifications combine the power of modular and traditional flavor symmetries to address the flavor puzzle. This top-down scheme determines the representations and modular weights of all matter fields, imposing strict constraints on the structure of the effective potential, which result in controlled corrections. We study the lepton and quark flavor phenomenology of an explicit, potentially realistic example model based on a ?6/ℤ3× ℤ3 orbifold compactification of the heterotic string that gives rise to an Ω(2) eclectic flavor symmetry. We find that the interplay of flavon alignment and the localization of the modulus in the vicinity of a symmetry-enhanced point leads to naturally protected fermion mass hierarchies, favoring normal-ordered neutrino masses arising from a see-saw mechanism. We show that our model can reproduce all observables in the lepton sector with a small number of parameters and deliver predictions for so far undetermined neutrino observables. Furthermore, we extend the fit to quarks and find that Kähler corrections are instrumental in obtaining a successful simultaneous fit to the quark and lepton sectors.

【 授权许可】

Unknown   
© The Author(s) 2022

【 图 表 】

Fig. 5