Two Zero Mass Matrices and Sterile Neutrinos

Abstract

Recent experimental data is indicative of the existence of sterile neutrinos. The minimal scheme that can account for the data and is consistent with cosmological observations is the 3+1 picture which consists of three predominantly active and one predominantly sterile neutrino with the fourth neutrino being heavier than the other three. Within this scheme there are two possibilities depending on whether the three light states obey normal or inverted hierarchy. In this paper we consider the two zero textures of the low energy neutrino mass matrix in presence of one additional sterile neutrino. We find that among 45 possible two zero textures for this case, 15 are consistent with all current observations. Remarkably, these correspond to the two-zero textures of a three active neutrino mass matrix. We discuss the mass spectrum and the parameter correlations that we find in the various textures. We also present the effective mass governing neutrinoless double beta decay as a function of the lowest mass.

20 pages, 5 figures

References in corpus (6)

• Observation of electron-antineutrino disappearance at Daya Bay
• A robust upper limit on N_eff from BBN, circa 2011
• Neutrino Masses, Lepton Flavor Mixing and Leptogenesis in the Minimal Seesaw Model
• Phenomenological Implications of a Class of Neutrino Mass Matrices
• Two-parameter neutrino mass matrices with two texture zeros
• CP Violation in Two Zero Texture Neutrino Mass Matrices

Cited by in corpus (12)

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• Influence of a keV sterile neutrino on neutrino-less double beta decay -- how things changed in the recent years
• Doubly charged scalar decays in a type II seesaw scenario with two Higgs triplets
• Compatibility of $A_4$ Flavour Symmetric Minimal Extended Seesaw with $(3+1)$ Neutrino Data
• Analysis of four-zero textures in $3+1$ framework
• Implication of a vanishing element in 3+1 Scenario
• Texture zeros of low-energy Majorana neutrino mass matrix in 3+1 scheme
• Distinctive Collider Signals for a Two Higgs Triplet Model
• Understanding the Masses and Mixings of One-Zero Textures in 3+1 Scenario
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• Revisiting Majorana Neutrino Textures in the Light of Dark LMA