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CP-violating phase on magnetized toroidal orbifolds

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Title: CP-violating phase on magnetized toroidal orbifolds
Authors: Kobayashi, Tatsuo Browse this author →KAKEN DB
Nishiwaki, Kenji Browse this author
Tatsuta, Yoshiyuki Browse this author
Keywords: Phenomenology of Field Theories in Higher Dimension
Issue Date: 13-Apr-2017
Publisher: Springer
Journal Title: Journal of High Energy Physics
Volume: 4
Start Page: 80
Publisher DOI: 10.1007/JHEP04(2017)080
Abstract: We study the CP-violating phase of the quark sector on T-2/Z(N) (N = 2, 3, 4, 6) with non-vanishing magnetic fluxes, where properties of possible origins of the CP violation are investigated minutely. In this system, a non-vanishing value is mandatory in the real part of the complex modulus parameter tau of the two-dimensional torus in order to explain the CP violation in the quark sector. On T-2 without orbifolding, underlying discrete flavor symmetries severely restrict the form of Yukawa couplings and it is very difficult to reproduce the observed pattern in the quark sector including the CP-violating phase delta(CP). When multiple Higgs doublets emerge on T-2/Z(2), the mass matrices of the zero -mode fermions can be written in the Gaussian textures by choosing appropriate configurations of vacuum expectation values of the Higgs fields. When such Gaussian textures of mass matrices are realized, we show that all of the quark profiles, which are mass hierarchies among the quarks, quark mixing angles, and delta(CP) can be simultaneously realized.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小林 達夫

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