Electroweak baryogenesis with vector-like leptons and scalar singlets

Journal of High Energy Physics

  ^{1    1    1    1    2} 

[1] 0000 0001 2179 088X, grid.1008.9, ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of Melbourne, 3010, Victoria, Australia;0000 0001 2184 9220, grid.266683.f, Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts Amherst, 01003, Amherst, MA, U.S.A.;0000000107068890, grid.20861.3d, California Institute of Technology, 91135, Pasadena, CA, U.S.A.;0000 0004 0368 8293, grid.16821.3c, Tsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China;0000000107068890, grid.20861.3d, Kellogg Radiation Laboratory, California Institute of Technology, 91125, Pasadena, CA, U.S.A.;

关键词: Beyond Standard Model;    Cosmology of Theories beyond the SM;   

DOI  :  10.1007/JHEP09(2019)012

来源: publisher

【 摘 要 】

We investigate the viability of electroweak baryogenesis in a model with a first order electroweak phase transition induced by the addition of two gauge singlet scalars. A vector-like lepton doublet is introduced in order to provide CP violating interactions with the singlets and Standard Model leptons, and the asymmetry generation dynamics are examined using the vacuum expectation value insertion approximation. We find that such a model is readily capable of generating sufficient baryon asymmetry while satisfying electron electric dipole moment and collider phenomenology constraints.

【 授权许可】

Unknown