Neutron lifetime puzzle and neutron -- mirror neutron oscillation

Abstract

The discrepancy between the neutron lifetimes measured in the beam and trap experiments can be explained via the neutron $n$ conversion into mirror neutron $n^{\prime }$, its dark partner from parallel mirror sector, provided that $n$ and $n^{\prime }$ have a tiny mass splitting order $10^{-7}$ eV. In large magnetic fields used in beam experiments $n-n^{\prime }$ transition is resonantly enhanced and can transform of about a per cent fraction of neutrons into mirror neutrons which decay in invisible mode. Thus less protons will be produced and the measured value ${\tau }_{\mathrm{beam}}$ appears larger than $\beta$-decay time ${\tau }_{\beta }={\tau }_{\mathrm{trap}}$. Some phenomenological and astrophysical consequences of this scenario are also briefly discussed.

6 pages, 2 figures

References in corpus (16)

• Dark Matter Interpretation of the Neutron Decay Anomaly
• Neutron -- Mirror Neutron Oscillation: How Fast Might It Be?
• Neutron Lifetime and Axial Coupling Connection
• Neutron lifetime measurements with the big gravitational trap for ultracold neutrons
• Neutron lifetime measurements using gravitationally trapped ultracold neutrons
• Experimental search for neutron - mirror neutron oscillations using storage of ultracold neutrons
• More about neutron - mirror neutron oscillation
• A direct experimental limit on neutron -- mirror neutron oscillations
• Fast Neutron - Mirror Neutron Oscillation and Ultra High Energy Cosmic Rays
• Neutron to Mirror-Neutron Oscillations in the Presence of Mirror Magnetic Fields
• Dark Side of the Neutron?
• New experimental limits on neutron - mirror neutron oscillations in the presence of mirror magnetic field
• Neutron lifetime and dark decay of the neutron and hydrogen
• Neutron--Antineutron Oscillations: Discrete Symmetries and Quark Operators
• Constraints on Mirror Models of Dark Matter from Observable Neutron-Mirror Neutron Oscillation
• Limiting Equivalence Principle Violation and Long-Range Baryonic Force from Neutron-Antineutron Oscillation

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