TY - JOUR

T1 - Charged scalars confronting neutrino mass and muon g − 2 anomaly

AU - Chakrabarty, Nabarun

AU - Chiang, Cheng Wei

AU - Ohata, Takahiro

AU - Tsumura, Koji

N1 - Funding Information:
This research of CWC was supported by the Ministry of Science and Technology of Taiwan under Grant No. MOST 104-2628-M-002-014-MY4. The work of KT is supported by JSPS Grant-in-Aid for Young Scientists (B) (Grant No. 16K17697) and the MEXT Grant-in-Aid for Scientific Research on Innovation Areas (Grant No. 18H05543). NC thanks Titas Chanda for an important computational help.
Publisher Copyright:
© 2018, The Author(s).

PY - 2018/12/1

Y1 - 2018/12/1

N2 - The present work introduces two possible extensions of the Standard Model Higgs sector. In the first case, the Zee-Babu type model for the generation of neutrino mass is augmented with a scalar triplet and additional singly charged scalar singlets. The second scenario, on the other hand, generalizes the Type-II seesaw model by replicating the number of the scalar triplets. A ℤ3 symmetry is imposed in case of both the scenarios, but, allowed to be violated by terms of mass dimension two and three for generating neutrino masses and mixings. We examine how the models so introduced can explain the experimental observation on the muon anomalous magnetic moment. We estimate the two-loop contribution to neutrino mass induced by the scalar triplet, in addition to what comes from the doubly charged singlet in the usual Zee-Babu framework, in the first model. On the other hand, the neutrino mass arises in the usual Type-II fashion in the second model. In addition, the role of the ℤ3 symmetry in suppressing lepton flavor violation is also elucidated.

AB - The present work introduces two possible extensions of the Standard Model Higgs sector. In the first case, the Zee-Babu type model for the generation of neutrino mass is augmented with a scalar triplet and additional singly charged scalar singlets. The second scenario, on the other hand, generalizes the Type-II seesaw model by replicating the number of the scalar triplets. A ℤ3 symmetry is imposed in case of both the scenarios, but, allowed to be violated by terms of mass dimension two and three for generating neutrino masses and mixings. We examine how the models so introduced can explain the experimental observation on the muon anomalous magnetic moment. We estimate the two-loop contribution to neutrino mass induced by the scalar triplet, in addition to what comes from the doubly charged singlet in the usual Zee-Babu framework, in the first model. On the other hand, the neutrino mass arises in the usual Type-II fashion in the second model. In addition, the role of the ℤ3 symmetry in suppressing lepton flavor violation is also elucidated.

UR - http://www.scopus.com/inward/record.url?scp=85059084520&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85059084520&partnerID=8YFLogxK

U2 - 10.1007/JHEP12(2018)104

DO - 10.1007/JHEP12(2018)104

M3 - Article

AN - SCOPUS:85059084520

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 104

ER -