Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators
Abstract We consider an anomaly-free U(1) extension of the Standard Model with three right-handed neutrinos (RHNs) and two complex scalars, wherein the charge assignments preclude all tree-level mass terms for the neutrinos. Considering this setup, in turn, to be only a low-energy effective theory,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP06(2020)111 |
| _version_ | 1818477280390807552 |
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| author | Debajyoti Choudhury Kuldeep Deka Tanumoy Mandal Soumya Sadhukhan |
| author_facet | Debajyoti Choudhury Kuldeep Deka Tanumoy Mandal Soumya Sadhukhan |
| author_sort | Debajyoti Choudhury |
| collection | DOAJ |
| description | Abstract We consider an anomaly-free U(1) extension of the Standard Model with three right-handed neutrinos (RHNs) and two complex scalars, wherein the charge assignments preclude all tree-level mass terms for the neutrinos. Considering this setup, in turn, to be only a low-energy effective theory, we introduce higher-dimensional terms a la Froggatt-Nielsen to naturally generate tiny neutrino masses. One of the RHNs turns out to be very light, thereby constituting the main decay mode for the Z′ and hence relaxing the LHC dilepton resonance search constraints. The lightest RHN has a lifetime comparable to or bigger than the age of the Universe, and, hence, could account for a non-negligible fraction of the dark matter. |
| first_indexed | 2024-12-10T09:36:02Z |
| format | Article |
| id | doaj.art-d5d1bb3a1c7e4ba5ba27cd89a6951c8a |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-10T09:36:02Z |
| publishDate | 2020-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-d5d1bb3a1c7e4ba5ba27cd89a6951c8a2022-12-22T01:54:10ZengSpringerOpenJournal of High Energy Physics1029-84792020-06-012020613810.1007/JHEP06(2020)111Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operatorsDebajyoti Choudhury0Kuldeep Deka1Tanumoy Mandal2Soumya Sadhukhan3Department of Physics and Astrophysics, University of DelhiDepartment of Physics and Astrophysics, University of DelhiIndian Institute of Science Education and Research ThiruvananthapuramDepartment of Physics and Astrophysics, University of DelhiAbstract We consider an anomaly-free U(1) extension of the Standard Model with three right-handed neutrinos (RHNs) and two complex scalars, wherein the charge assignments preclude all tree-level mass terms for the neutrinos. Considering this setup, in turn, to be only a low-energy effective theory, we introduce higher-dimensional terms a la Froggatt-Nielsen to naturally generate tiny neutrino masses. One of the RHNs turns out to be very light, thereby constituting the main decay mode for the Z′ and hence relaxing the LHC dilepton resonance search constraints. The lightest RHN has a lifetime comparable to or bigger than the age of the Universe, and, hence, could account for a non-negligible fraction of the dark matter.http://link.springer.com/article/10.1007/JHEP06(2020)111Beyond Standard ModelNeutrino PhysicsGauge Symmetry |
| spellingShingle | Debajyoti Choudhury Kuldeep Deka Tanumoy Mandal Soumya Sadhukhan Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators Journal of High Energy Physics Beyond Standard Model Neutrino Physics Gauge Symmetry |
| title | Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators |
| title_full | Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators |
| title_fullStr | Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators |
| title_full_unstemmed | Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators |
| title_short | Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators |
| title_sort | neutrino and z phenomenology in an anomaly free u 1 extension role of higher dimensional operators |
| topic | Beyond Standard Model Neutrino Physics Gauge Symmetry |
| url | http://link.springer.com/article/10.1007/JHEP06(2020)111 |
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