Phenomenological aspects of possible vacua of a neutrino flavor model

  • We discuss a supersymmetric model with discrete flavor symmetry A4×Z3. The additional scalar fields which contribute masses of leptons in the Yukawa terms are introduced in this model. We analyze their scalar potential and find that they have various vacuum structures. We show the relations among 24 different vacua and classify them into two types. We derive expressions of the lepton mixing angles, Dirac CP violating phase and Majorana phases for the two types. The model parameters which are allowed by the experimental data of the lepton mixing angles are different for each type. We also study the constraints on the model parameters which are related to Majorana phases. The different allowed regions of the model parameters for the two types are shown numerically for a given region of two combinations of the CP violating phases.
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Takuya Morozumi, Hideaki Okane, Hiroki Sakamoto, Yusuke Shimizu, Kenta Takagi and Hiroyuki Umeeda. Phenomenological aspects of possible vacua of a neutrino flavor model[J]. Chinese Physics C, 2018, 42(2): 023102. doi: 10.1088/1674-1137/42/2/023102
Takuya Morozumi, Hideaki Okane, Hiroki Sakamoto, Yusuke Shimizu, Kenta Takagi and Hiroyuki Umeeda. Phenomenological aspects of possible vacua of a neutrino flavor model[J]. Chinese Physics C, 2018, 42(2): 023102.  doi: 10.1088/1674-1137/42/2/023102 shu
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Received: 2017-10-03
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    Supported by JSPS KAKENHI Grant Number JP17K05418 (T.M.). This work is also supported in part by Grants-in-Aid for Scientific Research[No. 16J05332 (Y.S.), Nos. 24540272, 26247038, 15H01037, 16H00871, and 16H02189 (H.U.)] from the Ministry of Education, Culture, Sports, Science and Technology in Japan. H.O. is also supported by Hiroshima Univ. Alumni Association

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Phenomenological aspects of possible vacua of a neutrino flavor model

    Corresponding author: Takuya Morozumi,
    Corresponding author: Hideaki Okane,
    Corresponding author: Hiroki Sakamoto,
    Corresponding author: Yusuke Shimizu,
    Corresponding author: Kenta Takagi,
    Corresponding author: Hiroyuki Umeeda,
Fund Project:  Supported by JSPS KAKENHI Grant Number JP17K05418 (T.M.). This work is also supported in part by Grants-in-Aid for Scientific Research[No. 16J05332 (Y.S.), Nos. 24540272, 26247038, 15H01037, 16H00871, and 16H02189 (H.U.)] from the Ministry of Education, Culture, Sports, Science and Technology in Japan. H.O. is also supported by Hiroshima Univ. Alumni Association

Abstract: We discuss a supersymmetric model with discrete flavor symmetry A4×Z3. The additional scalar fields which contribute masses of leptons in the Yukawa terms are introduced in this model. We analyze their scalar potential and find that they have various vacuum structures. We show the relations among 24 different vacua and classify them into two types. We derive expressions of the lepton mixing angles, Dirac CP violating phase and Majorana phases for the two types. The model parameters which are allowed by the experimental data of the lepton mixing angles are different for each type. We also study the constraints on the model parameters which are related to Majorana phases. The different allowed regions of the model parameters for the two types are shown numerically for a given region of two combinations of the CP violating phases.

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