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Related papers: Radiative Neutrino Model with Inert Triplet Scalar

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We study a one-loop induced neutrino mass model with an inert isospin triplet scalar field of $Y=0$ and heavier isospin doublet vector-like leptons and singlet Majorana right-handed fermions. In addition to the neutrino mass matrix, We…

High Energy Physics - Phenomenology · Physics 2024-09-18 Shilpa Jangid , Keiko I. Nagao , Hiroshi Okada

We propose a radiative seesaw model at the three-loop level, in which quarks, leptons, leptoquark bosons, and a Majorana fermion of dark matter candidate are involved in the neutrino loop. Analyzing neutrino oscillation data including all…

High Energy Physics - Phenomenology · Physics 2016-09-28 Takaaki Nomura , Hiroshi Okada , Nobuchika Okada

We propose a loop induced neutrino mass model, in which we introduce several exotic fermions and bosons with $SU(2)_L$ multiplet, and discuss various phenomenologies such as lepton flavor violations, muon anomalous magnetic moment,…

High Energy Physics - Phenomenology · Physics 2016-12-21 Takaaki Nomura , Hiroshi Okada , Yuta Orikasa

We propose a three-loop neutrino mass model with a few leptoquark scalars in $SU(2)_L$-triplet form, through which we can explain the anomaly of $B \to K^{(*)} \mu^+ \mu^-$, a sizable muon $g-2$ and a bosonic dark matter candidate, and at…

High Energy Physics - Phenomenology · Physics 2017-03-22 Kingman Cheung , Takaaki Nomura , Hiroshi Okada

We propose a model with radiatively induced neutrino mass at two-loop level, applying modular $A_4$ symmetry. The neutrino mass matrix is formulated where the structure of associated couplings are restricted by the symmetry. Then we show…

High Energy Physics - Phenomenology · Physics 2021-03-09 Takaaki Nomura , Hiroshi Okada

We study a three-loop induced neutrino mass scenario from a non-holomorphic modular $A_4$ flavor symmetry and reach the minimum scenario leading predictions of the lepton masses, mixing angles, and Dirac and Majorana phases, which are shown…

High Energy Physics - Phenomenology · Physics 2025-12-04 Takaaki Nomura , Hiroshi Okada

We study a neutrino model introducing an additional nontrivial gauged lepton symmetry where the neutrino masses are induced at two-loop level while the first and second charged-leptons of the standard model are done at one-loop level. As a…

High Energy Physics - Phenomenology · Physics 2018-04-04 Takaaki Nomura , Hiroshi Okada

We propose a radiative seesaw model with an inert triplet scalar field in which Majorana neutrino masses are generated at the two loop level. There are fermionic or bosonic dark matter candidates in the model. We find that each candidate…

High Energy Physics - Phenomenology · Physics 2015-06-15 Yuji Kajiyama , Hiroshi Okada , Kei Yagyu

We study the neutrino sector in a minimal $SU(3)_L\times U(1)_X$ model, in which its mass is generated at one-loop level with the charged lepton mass, and hence there exists a strong correlation between the charged-lepton mass and the…

High Energy Physics - Phenomenology · Physics 2016-04-20 Hiroshi Okada , Nobuchika Okada , Yuta Orikasa

We propose a new type of radiative neutrino model with global hidden $U(1)$ symmetry, in which neutrino masses are induced at the four loop level. Then we discuss the muon anomalous magnetic moment to solve the discrepancy between…

High Energy Physics - Phenomenology · Physics 2017-05-17 Takaaki Nomura , Hiroshi Okada

We propose a one-loop neutrino mass model with several $SU(2)_L$ multiplet fermions and scalar fields in which the inert feature of a scalar to realize the one-loop neutrino mass can be achieved by the cancellation among Higgs couplings…

High Energy Physics - Phenomenology · Physics 2019-06-26 Takaaki Nomura , Hiroshi Okada

We present radiative one-loop neutrino mass model with hypercharge zero scalar triplet in conjunction with another charged singlet scalar and an additional vectorlike lepton doublet. We study three variants of this mass model: the first one…

High Energy Physics - Phenomenology · Physics 2013-12-23 Vedran Brdar , Ivica Picek , Branimir Radovcic

We study a variation of the Krauss-Nasri-Trodden (KNT) model with a colored triplet scalar field and a colored singlet scalar field, in which we discuss the anomaly coming from $b\to s\mu\bar\mu$, fitting to the muon anomalous magnetic…

High Energy Physics - Phenomenology · Physics 2017-02-08 Kingman Cheung , Takaaki Nomura , Hiroshi Okada

We propose a one-loop induced radiative neutrino mass model with anomaly free flavour dependent gauge symmetry: $\mu$ minus $\tau$ symmetry $U(1)_{\mu-\tau}$. A neutrino mass matrix satisfying current experimental data can be obtained by…

High Energy Physics - Phenomenology · Physics 2015-06-23 Seungwon Baek , Hiroshi Okada , Kei Yagyu

We present a class of models with radiative neutrino mass and stable dark-matter candidates. Neutrino mass is generated by a one-loop diagram with the same topography as Ma's 2006 proposal (which used an inert scalar-doublet and singlet…

High Energy Physics - Phenomenology · Physics 2015-06-16 Sandy S. C. Law , Kristian L. McDonald

We propose a two-loop induced neutrino mass model, in which we show some bench mark points to satisfy the observed neutrino oscillation, the constraints of lepton flavor violations, and the relic density in the co-annihilation system…

High Energy Physics - Phenomenology · Physics 2016-01-20 Hiroshi Okada , Yuta Orikasa

We narrate dark matter, neutrino magnetic moment and mass in a Type-III radiative scenario. The Standard Model is enriched with three vector-like fermion triplets and two inert doublets to provide a suitable platform for the above…

High Energy Physics - Phenomenology · Physics 2023-12-01 Shivaramakrishna Singirala , Dinesh Kumar Singha , Rukmani Mohanta

In this work, we report on recent analyses of a class of models that generate neutrino mass at the three-loop level. We argue that these models offer a viable solution to both the neutrino mass and dark matter problems, without being in…

High Energy Physics - Phenomenology · Physics 2015-05-19 Amine Ahriche , Kristian L. McDonald , Salah Nasri

We study a three loop induced neutrino mass model with exotic vector-like isospin doublet leptons which contain a dark matter candidate. Then we explore lepton flavor violations, and dark matter physics in co-annihilation system. In this…

High Energy Physics - Phenomenology · Physics 2016-06-22 Takaaki Nomura , Hiroshi Okada , Yuta Orikasa

We explore the possibility to explain a bosonic dark matter candidate with a gauge singlet inside the loop to generate the neutrino mass matrix at two-loop level. The mass matrix is suppressed by a small mixing that comes from the bound on…

High Energy Physics - Phenomenology · Physics 2019-03-05 Seungwon Baek , Hiroshi Okada , Yuta Orikasa
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