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We study the method to test the unitarity of the lepton mixing matrix by using only the long baseline neutrino oscillation experiments, such as the combination of the T2HK experiment and the one with the $\nu_e$ beam from a future neutrino…

High Energy Physics - Phenomenology · Physics 2026-03-31 Ryuichiro Kitano , Joe Sato , Sho Sugama

Recently, many authors showed that if the solar and atmospheric neutrino data are both described by maximal mixing vacuum oscillations at the relevant mass scale, then there exists a unique bi-maximal lepton mixing matrix for three neutrino…

High Energy Physics - Phenomenology · Physics 2009-12-30 Sin Kyu Kang , C. S. Kim

The newly proposed finite symmetry Sigma(81) is applied to the problem of neutrino tribimaximal mixing. The result is more satisfactory than those of previous models based on A_4 in that the use of auxiliary symmetries (or mechanisms) may…

High Energy Physics - Phenomenology · Physics 2008-11-26 Ernest Ma

Exchange $\mu-\tau$ symmetry in the effective Majorana neutrino mass matrix does predict a maximal mixing for atmospheric neutrino oscillations asides to a null mixing that cannot be straightforwardly identified with reactor neutrino…

High Energy Physics - Phenomenology · Physics 2022-01-05 Abdel Pérez-Lorenzana

Recently Babu, Ma and Valle proposed a model of quark and lepton mixing based on $A_4$ symmetry. Within this model the lepton and slepton mixings are intimately related. We perform a numerical study in order to derive the slepton masses and…

High Energy Physics - Phenomenology · Physics 2010-04-06 M. Hirsch , J. C. Romao , S. Skadhauge , J. W. F. Valle , A. Villanova del Moral

This is a review article about neutrino mass models, particularly see-saw models involving three active neutrinos which are capable of describing both the atmospheric neutrino oscillation data, and the large mixing angle MSW solar solution,…

High Energy Physics - Phenomenology · Physics 2009-11-10 S. F. King

Following recent results from the SNO solar neutrino experiment and the K2K long-baseline neutrino experiment, the combined existing data on neutrino oscillations now point strongly to a specific form for the lepton mixing matrix, with…

High Energy Physics - Phenomenology · Physics 2010-02-10 P. F. Harrison , D. H. Perkins , W. G. Scott

Recent data of reactor neutrino experiments set more stringent constraint on leptonic mixing patterns. We examine all possible patterns on the basis of combinations of elementary correlations of elements of leptonic mixing matrix. we obtain…

High Energy Physics - Phenomenology · Physics 2016-04-28 Shu-jun Rong

Recent data from neutrino experiments gives intriguing hints about the mass ordering, the CP violating phase and non-maximal atmospheric mixing. There seems to be a (one sigma) preference for a normal ordered (NO) neutrino mass pattern,…

High Energy Physics - Phenomenology · Physics 2017-04-05 S. F. King

We investigate the phenomenological consequences of lepton mass matrices originated from the family permutation symmetry and its suitable breakings. Adopting the recently proposed new mass matrix for the charged lepton mass matrix and the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Kyungsik Kang , Sin Kyu Kang

The phenomenological case for threefold maximal lepton mixing is strengthened by more detailed comparison with existing data. The atmospheric neutrino data are self-consistent and in good agreement with the threefold maximal mixing…

High Energy Physics - Phenomenology · Physics 2009-10-30 P. F. Harrison , D. H. Perkins , W. G. Scott

In this topical review we argue that neutrino mass and mixing data motivates extending the Standard Model to include a non-Abelian discrete flavour symmetry in order to accurately predict the large leptonic mixing angles and CP violation.…

High Energy Physics - Phenomenology · Physics 2015-11-12 Stephen F. King

We propose simple phenomenological lepton mass matrices which describe the three neutrinos almost degenerate in mass, leading to a very large mixing angle between $\nu_\mu$ and $\nu_\tau$, as consistent with a recent report on atmospheric…

High Energy Physics - Phenomenology · Physics 2009-10-30 M. Fukugita , M. Tanimoto , T. Yanagida

We consider the case that the solar neutrino deficit is due to the vacuum oscillation. The lepton mass matrices with nearly bi-maximal mixings are needed in order to explain both solar and atmospheric neutrino deficit. A texture with the…

High Energy Physics - Phenomenology · Physics 2011-03-10 Morimitsu Tanimoto

The matter effects for solar neutrino oscillations are studied in a general scheme with an arbitrary number of sterile neutrinos, without any constraint on the mixing, assuming only a realistic hierarchy of neutrino squared-mass differences…

High Energy Physics - Phenomenology · Physics 2009-12-31 C. Giunti , Y. F. Li

Models of neutrino masses are discussed capable of explaining in a natural way the maximal mixing between $\nu_{\mu}$ and $\nu_{\tau}$ observed by the Super-Kamiokande collaboration. For three generations of leptons two classes of such…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. Jezabek , Y. Sumino

Current neutrino data are consistent with the so-called tribimaximal mixing scenario, which predicts \sin^2 \theta_{12}=1/3, zero U_{e3} and maximal \theta_{23}. This implies a special form of the neutrino mass matrix. Introducing small…

High Energy Physics - Phenomenology · Physics 2014-11-18 F. Plentinger , W. Rodejohann

Charged lepton mixing as a consequence of neutrino mixing is studied for two generations $e,\mu$ in the temperature regime $m_\mu \ll T \ll M_W$ in the early Universe. We state the general criteria for charged lepton mixing, critically…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. Boyanovsky , C. M. Ho

We discuss the neutrino oscillations, using texture zero mass matrices for the leptons, including radiative correction. The neutrino mixing angle theta_13 is calculated and agrees with the result of the new Daya Bay experiment.

High Energy Physics - Phenomenology · Physics 2015-06-04 Harald Fritzsch

We present an ansatz for the quark and lepton mass matrices, derivable from SO(10) type GUTs, which accommodates a heavy $(> 92 GeV)$ top quark and permits large mixings in the $\nu_\mu \leftrightarrow \nu_\tau$ sector (as suggested by the…

High Energy Physics - Phenomenology · Physics 2009-10-22 K. S. Babu , Q. Shafi
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