CP Violation in the Higgs Sector and a Phase Transition in the MSSM | Zendy

Koichi Funakubo | Zendy; S. Tao | Zendy; Fumihiko Toyoda | Zendy

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CP Violation in the Higgs Sector and a Phase Transition in the MSSM

Author(s) -

Koichi Funakubo,

S. Tao,

Fumihiko Toyoda

Publication year - 2003

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.109.415

Subject(s) - baryogenesis , physics , particle physics , higgs boson , higgs sector , electroweak interaction , cp violation , phase transition , pseudoscalar , scalar (mathematics) , boson , minimal supersymmetric standard model , technicolor , higgs field , mixing (physics) , gauge boson , quark , quantum mechanics , gauge theory , geometry , mathematics

We investigate the electroweak phase transition in the presence of a large CPviolation in the squark sector of the MSSM. When the CP violation is large,scalar-pseudoscalar mixing of the Higgs bosons occurs and a large CP violationin the Higgs sector is induced. It, however, weakens first-order phasetransition before the mixing reaches the maximal. Even when the CP violation inthe squark sector is not so large that the phase transition is strongly firstorder, the phase difference between the broken and symmetric phase regionsgrows to O(1), which leads to successful baryogenesis, when the charged Higgsbosons is light.Comment: 18 pages, 6 figures, LaTeX2

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