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Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets

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arxiv 1903.11255 v2 pith:CUSGCUIX submitted 2019-03-27 hep-ph

Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets

Nicole F. Bell , Matthew J. Dolan , Leon S. Friedrich , Michael J. Ramsey-Musolf , Raymond R. Volkas This is my paper
classification hep-ph
keywords electroweakmodelasymmetrybaryogenesisleptonsordersingletsvector-like
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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  1. Does the Electron EDM Preclude Electroweak Baryogenesis ?

    hep-ph 2024-04 unverdicted novelty 6.0

    First-order gradient CP-violating sources in EWBG quantum transport relax electron EDM bounds and increase viability compared to prior approximations in a model illustration.