A5052225049- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Science, Research, and Medicine
- Molecular Spectroscopy and Structure
- Quantum Chromodynamics and Particle Interactions
- Computational Physics and Python Applications
- Clusterin in disease pathology
- Protein Structure and Dynamics
- Cosmology and Gravitation Theories
- Quantum, superfluid, helium dynamics
- Nitric Oxide and Endothelin Effects
- Advanced NMR Techniques and Applications
- RNA and protein synthesis mechanisms
- Angiogenesis and VEGF in Cancer
Saha Institute of Nuclear Physics
2020-2022
University of Warwick
2010-2018
VA Connecticut Healthcare System
2014-2017
Yale University
2014-2017
The University of Texas Southwestern Medical Center
2016-2017
Southwestern Medical Center
2016-2017
Harvard University
2012
Rutherford Appleton Laboratory
2011
We use $S_4$ discrete group to construct a neutrino flavour model which leads $TM_1$ mixing and is consistent with the oscillation data. Using model's constrained parameter space, we predict values of Dirac $CP$ phase light mass as $-1<\sin \delta <-0.9$ $1.7<m_1 (\text{meV})<5.5$ respectively. thoroughly examine usefulness this in explaining observed baryon asymmetry Universe. Near-maximal breaking CP symmetry (arising due $\text{TM}_1$ constraint) helps us generating adequate through...
We present a model of neutrino mixing based on the flavour group $Δ(27)$ in order to account for observation non-zero reactor angle ($θ_{13}$). The provides common structure charged-lepton and sectors, giving their mass matrices `circulant-plus-diagonal' form. Mass this form readily lead patterns with realistic deviations from tribimaximal mixing, including $θ_{13}$. With parameters constrained by existing measurements, our predicts an inverted hierarchy. obtain two distinct sets solutions...
A procedure for using the eigenvectors of elements representations a discrete group in model building is introduced and used to construct that produces large reactor mixing angle, , agreement with recent neutrino oscillation observations. The fully constrains mass ratios predicts normal hierarchy light mass, m1 ≈ 25 meV. Motivated by model, new ansatz postulated which all angles within 1σ errors.
Guided by considerations of flavor symmetry, we construct a set exact standard model renormalization group evolution invariants which link quark masses and mixing parameters. We examine their phenomenological implications infer simple combination Yukawa coupling matrices plays unique role in the model, suggesting possible new insight into observed spectrum masses. Our are readily generalized to leptons case Dirac neutrinos, but do not appear be relevant for either quarks or minimal...
In the framework of representation theory finite groups, it was recently shown that a fully constrained complex-symmetric mass matrix can be conveniently mapped into sextet $\Sigma(72\times3)$. this paper, we introduce an additional flavor group $X_{24}$ in model so vacuum alignment $\Sigma(72\times3)$ is determined not only by symmetries but also $X_{24}$. We define several flavons which transform as multiplets under well The each these obtained simultaneous invariant eigenstate specific...
We classify the constraints on a stationary point of potential invariant under finite group into intrinsic and extrinsic based whether they are independent coefficients in or not. find that symmetry set points can be larger than stabilizer this generates constraints. By applying these findings framework auxiliary group, we show only obtained extrinsically an elementary theory generated intrinsically effective theory.
In 2002, two neutrino mixing ansatze having trimaximally mixed middle ( $$\nu _2$$ ) columns, namely tri-chi-maximal $$\text {T}\chi \text {M}$$ and tri-phi-maximal {T}\phi ), were proposed. 2012, it was shown that with $$\chi =\pm \,\frac{\pi }{16}$$ as well $$\phi = \pm leads to the solution, $$\sin ^2 \theta _{13} \frac{2}{3} \sin \frac{\pi , consistent latest measurements of reactor angle, $$\theta _{13}$$ . To obtain {M}_{(\chi }{16})}$$ {M}_{(\phi type I see-saw framework fully...
A bstract We construct a neutrino mass model based on the flavour symmetry group 4 × C 6 2 which accommodates light sterile in minimal extended seesaw (MES) scheme. Besides symmetry, we introduce U(1) gauge sector and also impose CP symmetry. The vacuum alignments of scalar fields spontaneously break these symmetries lead to construction fermion matrices. With help MES formulas, extract masses mixing observables. In active sector, obtain TM pattern with non-zero reactor angle broken μ - τ...
We study the effect of sterile neutrino on some low-scale processes in framework minimal extended seesaw (MES). MES is extension mechanism with addition intermediate mass. The model this work based Δ(96) × C 2 3 flavor symmetry. structures mass matrices lead to TM 1 mixing μ – τ predicts maximal value Dirac CP phase. carry out our analysis new physics contributions from different charged lepton violation (cLFV) involving muon and tau leptons as well neutrinoless double beta decay (0 νββ )....
With the couplings between eight gluons constrained by structure constants of su(3) algebra in QCD, one would expect that there should exist a special basis (or set bases) for wherein, unlike Cartan-Weyl basis, {\em all} interact identically (cyclically) with each other, explicitly on an equal footing. We report here particular such bases, which we have found computer search, and indicate associated $3 \times 3$ representations. conjecture essentially all cyclic bases may be obtained from...
In 2002, two neutrino mixing ansatze having trimaximally mixed middle ($\nu_2$) columns, namely tri-chi-maximal ($\text{T}\chi\text{M}$) and tri-phi-maximal ($\text{T}\phi\text{M}$), were proposed. It was recently shown that $\text{T}\chi\text{M}$ with $\chi=\pm \frac{\pi}{16}$ as well $\text{T}\phi\text{M}$ $\phi = \pm leads to the solution, $\sin^2 \theta_{13} \frac{2}{3} \sin^2 \frac{\pi}{16}$, consistent latest measurements of reactor angle, $\theta_{13}$. To obtain...