R. Sinha

ORCID: 0000-0003-2667-8226
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About
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Research Areas
  • Particle physics theoretical and experimental studies
  • Neutrino Physics Research
  • Astrophysics and Cosmic Phenomena
  • Quantum Chromodynamics and Particle Interactions
  • Particle Accelerators and Free-Electron Lasers
  • Computational Physics and Python Applications
  • Cosmology and Gravitation Theories
  • Superconducting Materials and Applications
  • Black Holes and Theoretical Physics
  • High-Energy Particle Collisions Research
  • Pulsars and Gravitational Waves Research

Saha Institute of Nuclear Physics
2016-2021

We investigate Linear and Inverse seesaw mechanisms with maximal zero textures of the constituent matrices subjected to assumption non-zero eigenvalues for neutrino mass matrix $m_\nu$ charged lepton $m_e$. If we restrict minimally parametrized non-singular `$m_e$' (i.e., maximum number zeros) it gives rise only 6 possible Non-zero determinant dictates six matrices. ask in this minimalistic approach, what are phenomenologically allowed possible. It turns out that leads 7 two-zero while one....

10.1016/j.physletb.2016.05.080 article EN cc-by Physics Letters B 2016-05-27

We propose a complex extension of mixed $\ensuremath{\mu}\ensuremath{\tau}$ antisymmetry in the neutrino Majorana mass matrix ${M}_{\ensuremath{\nu}}$. This can be implemented Lagrangian by generalized $CP$ transformation (labeled mixing parameter $\ensuremath{\theta}$) on left-chiral flavor fields. investigate its implications for leptonic violation and phenomenology general. Interestingly, $\ensuremath{\theta}$ gets correlated with Dirac phase $\ensuremath{\delta}$ atmospheric angle...

10.1103/physrevd.99.033009 article EN cc-by Physical review. D/Physical review. D. 2019-02-20

We investigate the consequences of a generalized ℤ2 × symmetry on scaling neutrino Majorana mass matrix. It enables us to determine definite analytical relations between mixing angles θ12 and θ13, maximal CP violation for Dirac type vanishing type. Beside other testable predictions low energy parameters such as ββ 0ν decay matrix element |M ee | light masses m1,2,3, model also has intriguing from perspective leptogenesis. With assumption that required leptogenesis is created by lightest (N1)...

10.1007/jhep12(2017)030 article EN cc-by Journal of High Energy Physics 2017-12-01

Within the framework of residual symmetry, two $\mathbb{Z}_2$ type associate $\mu\tau$ interchange symmetries robustly constrain Dirac CP phase $\delta$ in a model independent way. Both them predict simultaneous maximality and atmospheric mixing angle $\theta_{23}$. We show how these well known correlations will be changed if we generalize symmetry to symmetry. In particular, that stringent condition could relaxed even with very small departure from exact interchange. addition, present...

10.1007/jhep10(2019)057 article EN cc-by Journal of High Energy Physics 2019-10-01

We propose a neutrino mass model with $\mu\tau$-flavored CP symmetry, where the effective light Lagrangian enjoys an additional invariance under Friedberg-Lee (FL) transformation on left-handed flavor fields, that leads to highly predictive and testable scenario. While both types of ordering, i.e., Normal Ordering (NO) as well Inverted (IO) are allowed, absolute scale masses is fixed by vanishing determinant Majorana matrix $M_\nu$. show for whilst atmospheric mixing angle $\theta_{23}$ in...

10.1007/jhep03(2019)081 article EN cc-by Journal of High Energy Physics 2019-03-01

Direct CP violation in B -> J/Psi K is a clean test for new physics. However, the direct asymmetry will vanish if new-physics amplitude has same strong phase as standard-model amplitude. We show that this type of physics can still be detected via an angular analysis sister decay mode K^*. Time-dependent measurements and tagging are not necessary. Should found, used to obtain information about size parameters.

10.48550/arxiv.hep-ph/0207007 preprint EN other-oa arXiv (Cornell University) 2002-01-01
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