Invisible neutrino decay : First vs second oscillation maximum

Abstract

We study the physics potential of the long-baseline experiments T2HK, T2HKK and ESS$\nu$SB in the context of invisible neutrino decay. We consider normal mass ordering and assume that the state ${\nu }_3$ as unstable, decaying into sterile states during the flight and obtain constraints on the neutrino decay lifetime (${\tau }_3$). We find that T2HK, T2HKK and ESS$\nu$SB are sensitive to the decay-rate of ${\nu }_3$ for ${\tau }_3/m_3\le 2.72\times 10^{-11}$s/eV, ${\tau }_3/m_3\le 4.36\times 10^{-11}$s/eV and ${\tau }_3/m_3\le 2.43\times 10^{-11}$s/eV respectively at 3$\sigma$ C.L. We compare and contrast the sensitivities of the three experiments and specially investigate the role played by the mixing angle ${\theta }_{23}$. It is seen that for experiments with flux peak near the second oscillation maxima, the poorer sensitivity to ${\theta }_{23}$ results in weaker constraints on the decay lifetime. Although, T2HKK has one detector close to the second oscillation maxima, having another detector at the first oscillation maxima results in superior sensitivity to decay. In addition, we find a synergy between the two baselines of the T2HKK experiment which helps in giving a better sensitivity for ${\theta }_{23}$ in the higher octant. We discuss the octant sensitivity in presence of decay and show that there is an enhancement in sensitivity which occurs due to the contribution from the survival probability $P_{\mu \mu }$ which is more pronounced for the experiments at the second oscillation maxima. We also obtain the combined sensitivity of T2HK+ESS$\nu$SB and T2HKK+ESS$\nu$SB as ${\tau }_3/m_3\le 4.36\times 10^{-11}$s/eV and ${\tau }_3/m_3\le 5.53\times 10^{-11}$s/eV respectively at 3$\sigma$ C.L.

arXiv comment12 figure, 4 tables

References in corpus (44)

• Neutrino Physics with JUNO
• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• Simulation of long-baseline neutrino oscillation experiments with GLoBES
• 2020 Global reassessment of the neutrino oscillation picture
• New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
• Global constraints on absolute neutrino masses and their ordering
• Decay of High-Energy Astrophysical Neutrinos
• Neutrino Decay as an Explanation of Atmospheric Neutrino Observations
• Status of Oscillation plus Decay of Atmospheric and Long-Baseline Neutrinos
• Neutrino Decay and Atmospheric Neutrinos
• Testing decay of astrophysical neutrinos with incomplete information
• On Exotic Solutions of the Atmospheric Neutrino Problem
• A combined treatment of neutrino decay and neutrino oscillations
• Invisible Neutrino Decay Resolves IceCube's Track and Cascade Tension
• Resolving Eight-Fold Neutrino Parameter Degeneracy by Two Identical Detectors with Different Baselines
• Neutrino decay confronts the SNO data
• Cosmological Constraints on Invisible Neutrino Decays Revisited
• Constraints on neutrino decay lifetime using long-baseline charged and neutral current data
• Solar Neutrinos and the Decaying Neutrino Hypothesis
• Testing neutrino flavor mixing plus decay with neutrino telescopes
• Super-Kamiokande data and atmospheric neutrino decay
• Constraints on decay plus oscillation solutions of the solar neutrino problem
• Testing neutrino decay scenarios with IceCube data
• Exploring the sensitivity of current and future experiments to ${\theta }_{\odot }$
• Study of the performance of a large scale water-Cherenkov detector (MEMPHYS)
• Neutrino Decay and Solar Neutrino Seasonal Effect
• Invisible neutrino decay in the light of NOvA and T2K data
• Explanation for the low flux of high energy astrophysical muon-neutrinos
• Visible Decay of Astrophysical Neutrinos at IceCube
• MSW mediated neutrino decay and the solar neutrino problem
• Status of the neutrino decay solution to the solar neutrino problem
• Visible neutrino decay in the light of appearance and disappearance long baseline experiments
• Constraining the invisible neutrino decay with KM3NeT-ORCA
• Solar Neutrino Decay
• Sensitivity to neutrino decay with atmospheric neutrinos at INO
• Constraining Neutrino Lifetimes and Magnetic Moments via Solar Neutrinos in the Large Xenon Detectors
• A Study of Invisible Neutrino Decay at DUNE and its Effects on ${\theta }_{23}$ Measurement
• Do Neutrinos Decay?
• Matter effects in neutrino visible decay at future long-baseline experiments
• Is neutrino decay really ruled out as a solution to the atmospheric neutrino problem from Super-Kamiokande data?
• Neutrino Invisible Decay at DUNE: a multi-channel analysis
• Constraining visible neutrino decay at KamLAND and JUNO
• Invisible neutrino decays at the MOMENT experiment
• Probing the sensitivity to leptonic ${\delta }_{CP}$ in presence of invisible decay of ${\nu }_3$ using atmospheric neutrinos

Cited by in corpus (1)

• Probing invisible neutrino decay with KM3NeT-ORCA