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Related papers: Flavour-symmetric type-II Dirac neutrino seesaw me…

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We propose two different seesaw models namely, type I and inverse seesaw to realise light Dirac neutrinos within the framework of $A_4$ discrete flavour symmetry. The additional fields and their transformations under the flavour symmetries…

High Energy Physics - Phenomenology · Physics 2018-03-28 Debasish Borah , Biswajit Karmakar

We propose a flavour model based on an $A_4$ symmetry combined with a type-II seesaw mechanism for neutrino mass generation. The resulting neutrino mass matrix obeys a sum rule that, together with the measured mass-squared differences,…

High Energy Physics - Phenomenology · Physics 2026-03-16 Salvador Centelles Chuliá , Ranjeet Kumar

We propose a linear seesaw model to realise light Dirac neutrinos within the framework of $A_4$ discrete flavour symmetry. The additional fields and their transformations under the flavour symmetries are chosen in such a way that naturally…

High Energy Physics - Phenomenology · Physics 2018-12-12 Debasish Borah , Biswajit Karmakar

We study a neutrino mass model with $A_4$ discrete flavor symmetry using a type-I seesaw mechanism. The inclusion of extra flavons in our model leads to the deviations from exact tribimaximal mixing pattern resulting in a nonzero…

High Energy Physics - Phenomenology · Physics 2023-07-10 Animesh Barman , Ng. K. Francis , Hrishi Bora

We construct an $S_4$ flavour symmetric minimal inverse seesaw model where the standard model is extended by adding two right-handed and two standard model gauge singlets neutrinos to explain the origin of tiny neutrino masses. The…

High Energy Physics - Phenomenology · Physics 2023-12-08 Bikash Thapa , Sunita Barman , Sompriti Bora , Ng. K. Francis

We investigate neutrino mass model based on $A_4$ discrete flavor symmetry in type-I+II seesaw framework. The model has imperative predictions for neutrino masses, mixing and $CP$ violation testable in the current and upcoming neutrino…

High Energy Physics - Phenomenology · Physics 2019-07-29 Surender Verma , Monal Kashav , Shankita Bhardwaj

We propose a minimal $A_4$ flavor symmetric model, assisted by $Z_2 \times Z_3$ symmetry, which can naturally takes care of the appropriate lepton mixing and neutrino masses via Type-I seesaw. It turns out that the framework, originated due…

High Energy Physics - Phenomenology · Physics 2022-01-05 Arghyajit Datta , Biswajit Karmakar , Arunansu Sil

We discuss a double seesaw mechanism for generating light neutrino masses within the Standard Model extensions that include both right-handed neutrinos and extra gauge-singlet sterile fermions. The flavour structure of the double seesaw…

High Energy Physics - Phenomenology · Physics 2026-01-09 Swaraj Kumar Nanda , Maibam Ricky Devi , Chandini Dash , R. N. Panda , Sudhanwa Patra

We present a comparative analysis of neutrino models based on a broad class of low scale seesaw mechanisms, viz., type II, inverse (ISS) and linear seesaw (LSS) mechanisms that are used to realize the tiny masses of neutrino. In particular,…

High Energy Physics - Phenomenology · Physics 2021-12-23 Maibam Ricky Devi , Kalpana Bora

We construct a neutrino mass model based on the flavour symmetry group $A_4\times C_4 \times C_6 \times C_2$ which accommodates a light sterile neutrino in the minimal extended seesaw (MES) scheme. Besides the flavour symmetry, we introduce…

High Energy Physics - Phenomenology · Physics 2020-11-04 R. Krishnan , Ananya Mukherjee , Srubabati Goswami

We analyse a flavour model for a lepton sector which is based on type I seesaw mechanism, a Z_2 symmetry for lepton flavours, a mu-tau interchange symmetry and a CP symmetry. This model fits well the data of neutrino mass squared…

High Energy Physics - Phenomenology · Physics 2015-10-19 Darius Jurciukonis , Thomas Gajdosik , Andrius Juodagalvis

Neutrino flavor mixing is explained within the recently proposed low-scale minimal linear seesaw model of neutrino mass generation, a variant of the standard linear seesaw led by a Dirac pair of extra sterile neutrinos which is odd under a…

High Energy Physics - Phenomenology · Physics 2022-12-29 Ernesto A. Matute

Our analysis involves enhancing the $\Delta(54)$ flavor symmetry model with Inverse Seesaw mechanism along with two SM Higgs through the incorporation of distinct flavons. Additionally, we introduce supplementary $Z_2\otimes Z_3 \otimes…

High Energy Physics - Phenomenology · Physics 2023-12-06 Hrishi Bora , Ng. K. Francis , Animesh Barman , Bikash Thapa

We posit an elegant modular $A_4$ framework for Dirac neutrinos that does not rely on the seesaw mechanism in a non SUSY setting. Our construction ensures purely Dirac neutrinos with a minimal scalar sector, naturally generating neutrino…

High Energy Physics - Phenomenology · Physics 2026-05-06 Manash Dey

We generalize the democratic neutrino mixing Ansatz by incorporating the type-II seesaw mechanism with S(3) flavor symmetry. We find that bilarge neutrino mixing can naturally appear if the flavor democracy contribution is strongly…

High Energy Physics - Phenomenology · Physics 2009-11-10 Werner Rodejohann , Zhi-zhong Xing

In this study, we implement the type-II seesaw mechanism for Dirac neutrino masses within the framework of a 3-3-1 model. To this end, we introduce a scalar sextet and impose both lepton number conservation and invariance under a discrete…

High Energy Physics - Phenomenology · Physics 2025-06-06 Vinícius Oliveira , Patricio Escalona , Lucia Angel , C. A. de S. Pires , Farinaldo S. Queiroz

In this letter we present a model for quarks and leptons based on T7 as flavour symmetry, predicting a canonical mass relation between charged leptons and down-type quarks proposed earlier. Neutrino masses are generated through a Type-I…

High Energy Physics - Phenomenology · Physics 2015-01-21 Cesar Bonilla , Stefano Morisi , Eduardo Peinado , Jose W. F. Valle

We discuss a neutrino mass model based on the S_4 flavor symmetry within the minimal seesaw framework, in which only two right-handed neutrinos are introduced and transform as 2 under S_4. Although the model contains less free parameters…

High Energy Physics - Phenomenology · Physics 2015-03-19 Rui-Zhi Yang , He Zhang

The present manuscript studies a recently proposed new neutrino mixing scheme with a neutrino mass selection rule, $m_{\nu}^{13} + m_{\nu}^{22} + m_{\nu}^{31} = 0$, among a neutrino mass matrix elements. The neutrino mass matrix texture is…

High Energy Physics - Phenomenology · Physics 2026-01-05 Takaaki Nomura , Oleg Popov

We study the minimal seesaw model, where two right-handed Majorana neutrinos are introduced, focusing on the CP violating phase. In addition, we take the trimaximal mixing pattern for the neutrino flavor where the charged lepton mass matrix…

High Energy Physics - Phenomenology · Physics 2018-01-17 Yusuke Shimizu , Kenta Takagi , Morimitsu Tanimoto
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