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In this talk we survey some of the recent promising developments in the search for the theory behind neutrino mass and mixing, and indeed all fermion masses and mixing. The talk is organized in terms of a neutrino mass models decision tree…

High Energy Physics - Phenomenology · Physics 2009-04-22 S. F. King

The mixing of three and four massive neutrinos is considered. It is shown that the neutrino oscillation data are not compatible with a hierarchy of couplings in the three-neutrino case. In the case of four neutrinos, a hierarchy of masses…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. M. Bilenky , C. Giunti , W. Grimus

Based on an approach to quark and lepton masses, where the mass spectra originate in vacuum expectation values of U(3) flavor nonet (gauge singlet) scalars, neutrino masses and mixing are investigated. As an offshoot of this approach, it is…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yoshio Koide

In this article, we derive the tiny neutrino masses and mixings from the democratic and diagonal texture approach, which consistent with the recent experimental oscillation data. The unitary rotation matrices, which diagonalize the neutrino…

High Energy Physics - Phenomenology · Physics 2023-05-16 Itishree Sethi , Biswaranjan Behera , Mitesh Kumar Behera

We develop a model of ours fitting the quark and lepton masses and mixing angles by removing from the model a Higgs field previously introduced to organise a large atmospheric mixing angle for neutrino oscillations. Due to the off-diagonal…

High Energy Physics - Phenomenology · Physics 2010-04-05 H. B. Nielsen , Y. Takanishi

A brief review of the experimental status of neutrino mixing. The model of neutrino oscillations has now been established with high confidence, with many of the model parameters measured to an accuracy of a few per cent. However, some…

High Energy Physics - Experiment · Physics 2011-07-21 Justin Evans

Restrictions on the neutrino masses and lepton mixing are reviewed. Solar, atmospheric and relic neutrinos give the indications of existence of nonzero neutrino masses and mixing. The data pick up two regions of mixing angles which are or…

High Energy Physics - Phenomenology · Physics 2009-09-25 Alexei Yu. Smirnov

A perspective on the contemporary use of Dyson-Schwinger equations, focusing on some recent phenomenological applications: a description and unification of light-meson observables using a one-parameter model of the effective quark-quark…

Nuclear Theory · Physics 2007-05-23 M. B. Hecht , C. D. Roberts , S. M. Schmidt

In the context of quark (as for lepton) mixing, we introduce the concept of the matrix of unitarity triangle angles $\Phi$, emphasising that it carries equivalent information to the complex mixing matrix $V$ itself. The angle matrix $\Phi$…

High Energy Physics - Phenomenology · Physics 2009-10-18 P. F. Harrison , S. Dallison , W. G. Scott

Recently, a curious neutrino mass matrix has been proposed: it is related to up-quark masses, and it can excellently give a nearly tribimaxial mixing. It is pointed out that, in order to obtain such successful results, three…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yoshio Koide

We establish the existence of one-loop finite relations between the Cabibbo angle and the quark mass ratios, in the Standard Model with one Higgs doublet and two quark generations. Assuming a simple quark-lepton universality, we use the…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Buysse

If neutrinos have mass, we give reasons for a possible pattern of three (squared) mass eigenvalues: $m_1^2 \simeq (2.8 - 5.8) \, \mbox{(eV)}^2 $, $m_2^2 \simeq 0.01 \, \mbox{(eV)}^2 $, $m_3^2 \simeq (1.5 - 1) \times 10^{-4} \mbox{(eV)}^2 $.…

High Energy Physics - Phenomenology · Physics 2011-05-23 Saul Barshay , Patrick Heiliger

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

This review is focused on neutrino mixing and neutrino oscillations in the light of the recent experimental developments. After discussing possible types of neutrino mixing for Dirac and Majorana neutrinos and considering in detail the…

High Energy Physics - Phenomenology · Physics 2014-11-17 S. M. Bilenky , C. Giunti , W. Grimus

A high energy muon collider naturally produces a collimated beam of neutrinos for a fixed-target experiment at a dedicated far-forward facility. The high intensity and energy of the beam makes it ideally suited for astonishingly precise…

High Energy Physics - Phenomenology · Physics 2025-12-01 David Marzocca , Francesco Montagno , Manuel Morales-Alvarado , Andrea Wulzer

An approximate neutrino mixing matrix is formutated by using the standard neutrino mixing matrix as a basis and experimental data of neutrino oscillations as inputs. By using the resulted approximate neutrino mixing matrix to proceed the…

High Energy Physics - Phenomenology · Physics 2016-07-05 Asan Damanik

Different approaches to the calculation of neutrino-nucleus cross sections are summarized. Potential impact of improving the nuclear physics input into neutrino interactions and cross section calculations on uncovering new physics is…

Nuclear Theory · Physics 2018-05-09 A. B. Balantekin

A direct connection can be made between mixing angles in negative parity baryons and the spin coupling of constituent quarks. The mixing angles do not depend on spectral data. These angles are recalculated for gluon exchange and pion…

High Energy Physics - Phenomenology · Physics 2009-11-07 J. Chizma , G. Karl

The current status of neutrino physics is reviewed with some near future perspective. After recollecting the birth of modern neutrino physics with nonzero masses and flavor mixing, I summarize the present status of measurement of the mixing…

High Energy Physics - Phenomenology · Physics 2014-03-18 Hisakazu Minakata

The correct quark and charged lepton mass matrices along with a nearly correct CKM matrix may be naturally accommodated in a Pati-Salam model constructed from intersecting D6 branes on a $T^6/(\Z_2 \times \Z_2)$ orientifold. Furthermore,…

High Energy Physics - Phenomenology · Physics 2020-01-01 Jordan Gemmill , Evan Howington , Van E. Mayes