CPT and lepton number violation in neutrino sector: Modified mass matrix and oscillation due to gravity
arXiv:0704.2593 · doi:10.1103/PhysRevD.77.025003
Abstract
We study the consequences of CPT and lepton number violation in neutrino sector. For CPT violation we take gravity with which neutrino and antineutrino couple differently. Gravity mixes neutrino and antineutrino in an unequal ratio to give two mass eigenstates. Lepton number violation interaction together with CPT violation gives rise to neutrino-antineutrino oscillation. Subsequently, we study the neutrino flavor mixing and oscillation under the influence of gravity. It is found that gravity changes flavor oscillation significantly which influences the relative abundance of different flavors in present universe. We show that the neutrinoless double beta decay rate is modified due to presence of gravity- the origin of CPT violation, as the mass of the flavor state is modified.
arXiv comment16 pages, no figure. A new section included describing effect of gravity on flavor oscillation; title, abstract, discussion section modified. Final version to appear in Physical Review D
References in corpus (21)
- CPT Violation and the Standard Model
- Neutrino Masses and Mixing: Evidence and Implications
- Tensor Perturbations in Inflationary Models as a Probe of Cosmology
- QUANTUM FIELD THEORY OF FERMION MIXING
- Neutrino-Dominated Accretion and Supernovae
- Spin half fermions with mass dimension one: theory, phenomenology, and dark matter
- Dark matter: A spin one half fermion field with mass dimension one?
- LSND, SN1987A, and CPT Violation
- Neutrinos as the messengers of CPT violation
- CPT-odd Resonances in Neutrino Oscillations
- Neutrino mixing contribution to the cosmological constant
- Cosmological Perturbations of Quantum-Mechanical Origin and Anisotropy of the Microwave Background
- CPT Violation and the Nature of Neutrinos
- On the Production of Scalar and Tensor Perturbations in Inflationary Models
- Neutrinos that violate CPT, and the experiments that love them
- Neutrino asymmetry around black holes: Neutrinos interact with gravity
- Space-time curvature coupling of spinors in early universe: Neutrino asymmetry and a possible source of baryogenesis
- Gravity induced neutrino-antineutrino oscillation: CPT and lepton number non-conservation under gravity
- Experimental tests of curvature couplings of Fermions in General Relativity
- Gravitational coupling of neutrinos in a medium
- Spin--1/2 Particle in Gravitational Field of a Rotating Body
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- Gravity-Induced Geometric Phases and Entanglement in Spinors and Neutrinos: Gravitational Zeeman Effect
- Theory Overview of Testing Fundamental Symmetries
- Testing the Lorentz and CPT Symmetry with CMB polarizations and a non-relativistic Maxwell Theory
- Dynamical Mass Generations and Collective Excitations in the (Supersymmetric-)NambuJona-Lasinio Model and a Gauge Theory with Left-Right-Asymmetric Majorana Mass Terms
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