Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fields
Abstract If neutrinos are Dirac fermions, certain new physics beyond the standard model should exist to account for the smallness of neutrino mass. With two additional scalars and a heavy intermediate fermion, in this paper, we systematically study the general mechanism that can naturally generate t...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2017-04-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP04(2017)166 |
| _version_ | 1818582668517834752 |
|---|---|
| author | Weijian Wang Zhi-Long Han |
| author_facet | Weijian Wang Zhi-Long Han |
| author_sort | Weijian Wang |
| collection | DOAJ |
| description | Abstract If neutrinos are Dirac fermions, certain new physics beyond the standard model should exist to account for the smallness of neutrino mass. With two additional scalars and a heavy intermediate fermion, in this paper, we systematically study the general mechanism that can naturally generate the tiny Dirac neutrino mass at tree and in one-loop level. For tree level models, we focus on natural ones, in which the additional scalars develop small vacuum expectation values without fine-tuning. For one-loop level models, we explore those having dark matter candidates under Z 2 D symmetry. In both cases, we concentrate on SU(2) L multiplet scalars no larger than quintuplet, and derive the complete sets of viable models. Phenomenologies, such as lepton flavor violation, leptogenesis, DM and LHC signatures are briefly discussed. |
| first_indexed | 2024-12-16T07:53:03Z |
| format | Article |
| id | doaj.art-9e649430379c4125ae11117fafab54b7 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-16T07:53:03Z |
| publishDate | 2017-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-9e649430379c4125ae11117fafab54b72022-12-21T22:38:48ZengSpringerOpenJournal of High Energy Physics1029-84792017-04-012017413610.1007/JHEP04(2017)166Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fieldsWeijian Wang0Zhi-Long Han1Department of Physics, North China Electric Power UniversitySchool of Physics, Nankai UniversityAbstract If neutrinos are Dirac fermions, certain new physics beyond the standard model should exist to account for the smallness of neutrino mass. With two additional scalars and a heavy intermediate fermion, in this paper, we systematically study the general mechanism that can naturally generate the tiny Dirac neutrino mass at tree and in one-loop level. For tree level models, we focus on natural ones, in which the additional scalars develop small vacuum expectation values without fine-tuning. For one-loop level models, we explore those having dark matter candidates under Z 2 D symmetry. In both cases, we concentrate on SU(2) L multiplet scalars no larger than quintuplet, and derive the complete sets of viable models. Phenomenologies, such as lepton flavor violation, leptogenesis, DM and LHC signatures are briefly discussed.http://link.springer.com/article/10.1007/JHEP04(2017)166Beyond Standard ModelDiscrete SymmetriesNeutrino Physics |
| spellingShingle | Weijian Wang Zhi-Long Han Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fields Journal of High Energy Physics Beyond Standard Model Discrete Symmetries Neutrino Physics |
| title | Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fields |
| title_full | Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fields |
| title_fullStr | Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fields |
| title_full_unstemmed | Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fields |
| title_short | Naturally small Dirac neutrino mass with intermediate SU(2) L multiplet fields |
| title_sort | naturally small dirac neutrino mass with intermediate su 2 l multiplet fields |
| topic | Beyond Standard Model Discrete Symmetries Neutrino Physics |
| url | http://link.springer.com/article/10.1007/JHEP04(2017)166 |
| work_keys_str_mv | AT weijianwang naturallysmalldiracneutrinomasswithintermediatesu2lmultipletfields AT zhilonghan naturallysmalldiracneutrinomasswithintermediatesu2lmultipletfields |