Scalar NSI: A unique tool for constraining absolute neutrino masses via $\nu$-oscillations

Abstract

In the standard interaction scenario, a direct measurement of absolute neutrino masses via neutrino oscillations is not feasible, as the oscillations depend only on the mass-squared differences. However, scalar non-standard interactions (SNSI) can introduce sub-dominant terms in the neutrino oscillation Hamiltonian that can directly affect the neutrino mass matrix, thereby making SNSI a unique tool for neutrino mass measurements. In this work, for the first time, we constrain the absolute masses of neutrinos by probing SNSI. We have explored the constraints on the lightest neutrino mass with different choices of ${\delta }_{CP}$ and ${\theta }_{23}$ for both neutrino mass hierarchies. We show that a bound on the neutrino mass can be induced in the presence of SNSI at DUNE. We find that the lightest neutrino mass can be constrained with ${\eta }_{\tau \tau }$ for normal mass hierarchy irrespective of the octant of ${\theta }_{23}$ and the value of the CP phase ${\delta }_{CP}$. This study suggests that SNSI can serve as an interesting avenue to constrain the absolute neutrino masses in long-baseline neutrino experiments via neutrino oscillations.

21 pages, 7 figures, 2 tables

References in corpus (16)

• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• Massive neutrinos and cosmology
• Final Results of GERDA on the Search for Neutrinoless Double-$\beta$ Decay
• NuFit-6.0: Updated global analysis of three-flavor neutrino oscillations
• Cosmological parameters derived from the final (PR4) Planck data release
• On the most constraining cosmological neutrino mass bounds
• The Design, Construction, and Commissioning of the KATRIN Experiment
• Neutrino oscillation probabilities through the looking glass
• How to Identify Different New Neutrino Oscillation Physics Scenarios at DUNE
• Exploring the effects of Scalar Non Standard Interactions on the CP violation sensitivity at DUNE
• Imprints of scalar NSI on the CP-violation sensitivity using synergy among DUNE, T2HK and T2HKK
• Non-standard neutrino interactions in light mediator models at reactor experiments
• Solar Neutrinos and the Strongest Oscillation Constraints on Scalar NSI
• European Spallation Source as a searching tool for an ultralight scalar field
• Theoretical and Experimental Challenges in the Measurement of Neutrino Mass
• Impact of scalar NSI on the neutrino mass ordering sensitivity at DUNE, HK and KNO

Cited by in corpus (3)

• Resonant neutrino self-interactions: Insights from the full shape galaxy power spectrum
• Impact of Scalar NSI on Spatial and Temporal Correlations in Neutrino Oscillations
• The Sensitivity of DUNE in Presence of Off-Diagonal Scalar NSI Parameters