Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator
Abstract We present the first detailed phenomenological analysis of a radiative Majorana neutrino mass model constructed from opening up a ∆L = 2 mass-dimension-11 effective operator constructed out of standard model fields. While three such operators are generated, only one dominates neutrino mass...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-03-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP03(2020)150 |
| _version_ | 1818856016218947584 |
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| author | John Gargalionis Iulia Popa-Mateiu Raymond R. Volkas |
| author_facet | John Gargalionis Iulia Popa-Mateiu Raymond R. Volkas |
| author_sort | John Gargalionis |
| collection | DOAJ |
| description | Abstract We present the first detailed phenomenological analysis of a radiative Majorana neutrino mass model constructed from opening up a ∆L = 2 mass-dimension-11 effective operator constructed out of standard model fields. While three such operators are generated, only one dominates neutrino mass generation, namely O 47 = L C ¯ L Q C ¯ L Q ¯ Q C HH , $$ {O}_{47}=\overline{L^C}L\overline{Q^C}L\overline{Q}{Q}^C HH, $$ where L denotes lepton doublet, Q quark doublet and H Higgs doublet. The under- lying renormalisable theory contains the scalars S 1 ∼ 3 ¯ 1 1 / 3 $$ {S}_1\sim \left(\overline{3},1,1/3\right) $$ coupling as a diquark, S 3 ∼ 3 ¯ 3 1 / 3 $$ {S}_3\sim \left(\overline{3},3,1/3\right) $$ coupling as a leptoquark, and Φ3 ∼ (3, 3, 2/3), which has no Yukawa couplings but does couple to S 1 and S 3 in addition to the gauge fields. Neutrino masses and mixings are generated at two-loop order. A feature of this model that is different from many other radiative models is the lack of proportionality to any quark and charged- lepton masses of the neutrino mass matrix. One consequence is that the scale of new physics can be as high as 107 TeV, despite the operator having a high mass dimension. This raises the prospect that ∆L = 2 effective operators at even higher mass dimensions may, when opened up, produce phenomenologically-viable radiative neutrino mass models. The parameter space of the model is explored through benchmark slices that are subject to experimental constraints from charged lepton flavour-violating decays, rare meson de- cays and neutral-meson mixing. The acceptable parameter space can accommodate the anomalies in R K (∗) and the anomalous magnetic moment of the muon. |
| first_indexed | 2024-12-19T08:17:47Z |
| format | Article |
| id | doaj.art-8f7b21d853a84e5f9789abf88555f6d2 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-19T08:17:47Z |
| publishDate | 2020-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-8f7b21d853a84e5f9789abf88555f6d22022-12-21T20:29:27ZengSpringerOpenJournal of High Energy Physics1029-84792020-03-012020315110.1007/JHEP03(2020)150Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operatorJohn Gargalionis0Iulia Popa-Mateiu1Raymond R. Volkas2ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of MelbourneARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of MelbourneARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of MelbourneAbstract We present the first detailed phenomenological analysis of a radiative Majorana neutrino mass model constructed from opening up a ∆L = 2 mass-dimension-11 effective operator constructed out of standard model fields. While three such operators are generated, only one dominates neutrino mass generation, namely O 47 = L C ¯ L Q C ¯ L Q ¯ Q C HH , $$ {O}_{47}=\overline{L^C}L\overline{Q^C}L\overline{Q}{Q}^C HH, $$ where L denotes lepton doublet, Q quark doublet and H Higgs doublet. The under- lying renormalisable theory contains the scalars S 1 ∼ 3 ¯ 1 1 / 3 $$ {S}_1\sim \left(\overline{3},1,1/3\right) $$ coupling as a diquark, S 3 ∼ 3 ¯ 3 1 / 3 $$ {S}_3\sim \left(\overline{3},3,1/3\right) $$ coupling as a leptoquark, and Φ3 ∼ (3, 3, 2/3), which has no Yukawa couplings but does couple to S 1 and S 3 in addition to the gauge fields. Neutrino masses and mixings are generated at two-loop order. A feature of this model that is different from many other radiative models is the lack of proportionality to any quark and charged- lepton masses of the neutrino mass matrix. One consequence is that the scale of new physics can be as high as 107 TeV, despite the operator having a high mass dimension. This raises the prospect that ∆L = 2 effective operators at even higher mass dimensions may, when opened up, produce phenomenologically-viable radiative neutrino mass models. The parameter space of the model is explored through benchmark slices that are subject to experimental constraints from charged lepton flavour-violating decays, rare meson de- cays and neutral-meson mixing. The acceptable parameter space can accommodate the anomalies in R K (∗) and the anomalous magnetic moment of the muon.http://link.springer.com/article/10.1007/JHEP03(2020)150Beyond Standard ModelNeutrino Physics |
| spellingShingle | John Gargalionis Iulia Popa-Mateiu Raymond R. Volkas Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator Journal of High Energy Physics Beyond Standard Model Neutrino Physics |
| title | Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator |
| title_full | Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator |
| title_fullStr | Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator |
| title_full_unstemmed | Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator |
| title_short | Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator |
| title_sort | radiative neutrino mass model from a mass dimension 11 ∆l 2 effective operator |
| topic | Beyond Standard Model Neutrino Physics |
| url | http://link.springer.com/article/10.1007/JHEP03(2020)150 |
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