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I report the analysis performed on fermion masses and mixing, including neutrino mixing, within the context of a model with hierarchical radiative mass generation mechanism for light charged fermions, mediated by exotic scalar particles at…

High Energy Physics - Phenomenology · Physics 2008-11-26 Albino Hernandez-Galeana

The flavour problem and the viability of texture zeros of the Majorana mass matrix in the 3+1 active-sterile neutrino mixing scenario are investigated in this work using a novel bottom-up technique where we leverage the pertinent concepts…

High Energy Physics - Phenomenology · Physics 2023-04-04 Maibam Ricky Devi

In view of the latest T2K and MINOS neutrino oscillation data which hint at a relatively large theta_13, we perform a systematic study of the Majorana neutrino mass matrix M_nu with two independent texture zeros. We show that three neutrino…

High Energy Physics - Phenomenology · Physics 2011-11-10 Harald Fritzsch , Zhi-zhong Xing , Shun Zhou

We estimate Majorana CP phases for a given flavor neutrino mass matrix (M_\nu) consistent with the bi-pair neutrino mixing, which is recently proposed to describe neutrino mixings given by \sin\theta_{13}=0 for the reactor neutrino mixing,…

High Energy Physics - Phenomenology · Physics 2011-10-31 Teruyuki Kitabayashi , Masaki Yasue

We propose a texture of three generation Majorana-type neutrino mass matrix in terms of only two parameters which gives rise to nearly bi-maximal mixing angles. We also demonstrate an explicit realization of such type of neutrino…

High Energy Physics - Phenomenology · Physics 2009-12-30 Ambar Ghosal

In the limit of an approximate $\mu-\tau$ symmetry in the neutrino mass matrix, we explore deviations to the Tri-Bi-Maximal mixing pattern in the neutrino sector. We consider two different ansatzes for the corrected pattern to predict the…

High Energy Physics - Phenomenology · Physics 2019-05-22 Diana C. Rivera-Agudelo , S. L. Tostado , Abdel Pérez-Lorenzana

Models involving a U(2) flavor symmetry, or any of a number of its non-Abelian discrete subgroups, can explain the observed hierarchy of charged fermion masses and CKM angles. It is known that a large neutrino mixing angle connecting second…

High Energy Physics - Phenomenology · Physics 2009-11-07 Alfredo Aranda , Christopher D. Carone , Patrick Meade

Motivated by recent measurements of a relatively large \theta_{13} in the Daya Bay and RENO reactor neutrino experiments, we carry out a systematic analysis of the hybrid textures of Majorana neutrino mass matrix $M_\nu$, which contain one…

High Energy Physics - Phenomenology · Physics 2013-05-30 Ji-Yuan Liu , Shun Zhou

We argue that the tri-bimaximal neutrino mixing pattern $V_0$ or its generalized form $V'_0$, which includes two arbitrary Majorana phases of CP violation, may result from an underlying flavor symmetry at a superhigh energy scale close to…

High Energy Physics - Phenomenology · Physics 2009-11-11 Shu Luo , Zhi-zhong Xing

We present an extension of the $\Delta(54)$ flavor symmetry model by incorporating two Standard Model Higgs fields. We generated the neutrino mass matrices with the Triple Inverse Seesaw mechanism. Our numerical analysis reveals deviations…

High Energy Physics - Phenomenology · Physics 2025-01-10 Hrishi Bora , Ng. K. Francis

We present a SUSY SU(5)xT' unified flavour model with type I see-saw mechanism of neutrino mass generation, which predicts the reactor neutrino angle to be \theta_{13} = 0.14 close to the recent results from the Daya Bay and RENO…

High Energy Physics - Phenomenology · Physics 2012-12-06 Aurora Meroni , S. T. Petcov , Martin Spinrath

In view of the recent neutrino oscillation data pointing to a non-vanishing value for the smallest mixing angle ($\theta_z$), we derive and find explicit realizations of the $(Z_2)^3$ flavor symmetry which characterizes, for the neutrino…

High Energy Physics - Phenomenology · Physics 2013-05-30 E. I. Lashin , M. Abbas , N. Chamoun , S. Nasri

We study possible patterns of neutrino masses and mixings in string models in which Majorana neutrino masses are generated by a certain class of string theory instantons recently considered in the literature. These instantons may generate…

High Energy Physics - Phenomenology · Physics 2009-01-06 S. Antusch , L. E. Ibanez , T. Macri

A randomly generated complex symmetric matrix using Adaptive Monte Carlo method, is taken as a general form of Majorana neutrino mass matrix, which is diagonalized by the use of eigenvectors. We extract all the neutrino oscillation…

High Energy Physics - Phenomenology · Physics 2024-07-30 Y Monitar Singh , Mayengbam Kishan Singh , N Nimai Singh

By postulating the relation \theta_{23} \simeq 45^\circ + \eta\theta_{13}, we seek preferable correction terms to tri-bi-maximal mixing and discuss their origins. Global analyses of the neutrino oscillation parameters favor \eta=\pm…

High Energy Physics - Phenomenology · Physics 2014-05-07 Takeshi Araki

Current experimental data allow the zero value for one neutrino mass, either m_1 = 0 or m_3 = 0. This observation implies that a realistic neutrino mass texture can be established by starting from the limit (a) m_1 = m_2 = 0 and m_3 \neq 0…

High Energy Physics - Phenomenology · Physics 2008-11-26 Aik Hui Chan , Harald Fritzsch , Shu Luo , Zhi-zhong Xing

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

In this note I mainly focus on the neutrino physics part in my talk and report the most recent progress made in \cite{YLW0}. It is seen that the Majorana features of neutrinos and SO(3) gauge flavor symmetry can simultaneously explain the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yue-Liang Wu

We present a model based on the $SU(3)_{C}\otimes SU(3)_{L}\otimes U(1)_{X}$ gauge symmetry having an extra $T_{7}\otimes Z_{2}\otimes Z_{3}\otimes Z_{14} $ flavor group, which successfully describes the observed SM fermion mass and mixing…

High Energy Physics - Phenomenology · Physics 2016-02-25 A. E. Cárcamo Hernández , R. Martinez

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