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The binary tetrahedral group ($T^{'}$) has provided the most successful flavour symmetry in understanding simultaneously the three mixing angles both for quarks in the CKM matrix and for neutrinos in the PMNS matrix. One prediction,…

High Energy Physics - Phenomenology · Physics 2023-09-07 Claudio Corianò , Paul H. Frampton , Pietro Santorelli

Flavor symmetry ($T^{'} \times Z_2$) where $T^{'}$ is the binary tetrahedral group predicts for neutrino mixing angles $\theta_{13} = \sqrt{2} (\frac{\pi}{4} - \theta_{23})$ and, with one phenomenological input, provides upper and lower…

High Energy Physics - Phenomenology · Physics 2010-04-21 David A. Eby , Paul H. Frampton , Shinya Matsuzaki

We present a model of neutrino mixing based on the flavour group $\Delta(27)$ in order to account for the observation of a non-zero reactor mixing angle ($\theta_{13}$). The model provides a common flavour structure for the charged-lepton…

High Energy Physics - Phenomenology · Physics 2014-06-10 P. F. Harrison , R. Krishnan , W. G. Scott

From recent groundbreaking experiments, it is now known that the Pontecorvo-Maki-Nakagawa-Sakata mixing differs significantly from the tribimaximal model in which theta_13=0 and theta_23=pi/4. Flavor symmetry can require that the departures…

High Energy Physics - Phenomenology · Physics 2013-01-17 David A. Eby , Paul H. Frampton

For a neutrino mass matrix whose texture has an approximate flavor symmetry and where one has near degenerate neutrino mass, it is shown that the tribimaximal values for atmospheric angle $\sin^{2}{\theta_{23}}=1/2$ and solar angle…

High Energy Physics - Phenomenology · Physics 2015-05-30 Riazuddin

We suggest a minimal extension of the simplest A4 flavour model that can induce a nonzero theta13 value, as required by recent neutrino oscillation data from reactors and accelerators. The predicted correlation between the atmospheric…

High Energy Physics - Phenomenology · Physics 2013-08-09 S. Morisi , D. V. Forero , J. C. Romao , J. W. F. Valle

Recent observations for a non-zero $\theta_{13}$ have come from various experiments. We study a model of lepton mixing with a 2-3 flavor symmetry to accommodate the sizable $\theta_{13}$ measurement. In this work, we derive deviations from…

High Energy Physics - Phenomenology · Physics 2015-03-19 Ahmed Rashed

In this addendum to arXiv:1103.0734 we consider the recent results from long-baseline $\nu_\mu\to\nu_e$ searches at the T2K and MINOS experiments and investigate their implications for the mixing angle $\theta_{13}$ and the leptonic Dirac…

High Energy Physics - Phenomenology · Physics 2015-05-30 Thomas Schwetz , Mariam Tortola , J. W. F. Valle

There are experimentally determined two best-fit points for the atmospheric neutrino mixing angle $\theta_{23}$: $\sin^2 \theta_{23} = 0.413$ (case A) and $\sin^2 \theta_{23} = 0.594$ (case B). In the bipair neutrino mixing scheme, we…

High Energy Physics - Phenomenology · Physics 2015-06-17 Teruyuki Kitabayashi , Masaki Yasue

We performed a simulation on the DUNE experiment to probe the capability of future neutrino long-baseline experiments' ability to constrain the parameter space of high-energy models by using the correlation between the atmospheric and…

High Energy Physics - Phenomenology · Physics 2017-11-29 Pedro Pasquini

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

In the original 2004 paper which first derived tribimaximal mixing in the context of A(4), i.e. the non-Abelian finite symmetry group of the tetrahedron (Plato's fire), as its simplest application, it was also pointed out how theta(13)…

High Energy Physics - Phenomenology · Physics 2011-12-26 Ernest Ma , Daniel Wegman

The lepton mixing angle theta_13, the only unknown angle in the standard three-flavor neutrino mixing scheme, is finally measured by the recent reactor and accelerator neutrino experiments. We perform a combined analysis of the data coming…

High Energy Physics - Phenomenology · Physics 2015-06-03 P. A. N. Machado , H. Minakata , H. Nunokawa , R. Zukanovich Funchal

The tetra-maximal neutrino mixing pattern predicts a relatively large reactor mixing angle theta_13 \approx 8.4^\circ, which is in good agreement with the latest best-fit value theta_13 = 9^\circ. However, its prediction for theta_12…

High Energy Physics - Phenomenology · Physics 2015-05-28 He Zhang , Shun Zhou

We present a model for leptonic mixing and the lepton masses based on flavor symmetries and higher-dimensional mass operators. The model predicts bilarge leptonic mixing (i.e., the mixing angles theta_{12} and theta_{23} are large and the…

High Energy Physics - Phenomenology · Physics 2009-11-07 Tommy Ohlsson , Gerhart Seidl

We propose octahedral group O_h as the family symmetry of neutrino-lepton sector. We find that O_h contains subgroups Z_2(mu-tau) x Z_2(solar) and Z_4^l for realizing the bimaximal (BM) mixings, theta_{23} = theta_{12} = 45^o and…

High Energy Physics - Phenomenology · Physics 2012-12-11 Hong-Jian He , Xun-Jie Xu

Among three leptonic mixing angles, $\theta_{23}$ angle, which characterizes the fractional contribution of two flavor eigenstates $\nu_{\mu}$ and $\nu_{\tau}$ to the third mass eigenstate $\nu_3$, is known to be the largest but the least…

High Energy Physics - Phenomenology · Physics 2024-10-29 Son Cao , P. T. Quyen , N. T. Hong Van , Ankur Nath , T. V. Ngoc

Neutrinos exhibit an interesting phenomenon called 'neutrino oscillation', in which a neutrino changes its flavor after traveling some flight length. Many experiments measured the mixing angles and mass differences, but the angle…

High Energy Physics - Experiment · Physics 2013-03-07 Masahiro Kuze

We show that a non-vanishing angle theta_13 of order 0.1 can be predicted in the framework of discrete flavour symmetries. We assume that left-handed leptons transform as triplets under a group G_f which is broken in such a way that…

High Energy Physics - Phenomenology · Physics 2011-09-13 Reinier de Adelhart Toorop , Ferruccio Feruglio , Claudia Hagedorn

Following the recent T2K indication of a sizeable reactor angle, we present a class of models which fix \theta_{13} while preserving trimaximal solar mixing. The models are based on a new type of constrained sequential dominance involving…

High Energy Physics - Phenomenology · Physics 2011-11-15 Stefan Antusch , Stephen F. King , Christoph Luhn , Martin Spinrath
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