Realistic calculations of nuclear disappearance lifetimes induced by neutron-antineutron oscillations

Details Realistic calculations of nuclear disappearance lifetimes induced by neutron-antineutron oscillations Realistic calculations of nuclear disappearance lifetimes induced by neutron-antineutron oscillations

2008-03-26

arxiv.org/abs/0803.3696v3

Phys.Rev.D78:016002,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

version matching PRD publication, typos and references corrected

Scientific paper

10.1103/PhysRevD.78.016002

Realistic calculations of nuclear disappearance lifetimes induced by neutron-antineutron oscillations are reported for oxygen and iron, using antineutron nuclear potentials derived from a recent comprehensive analysis of antiproton atomic X-ray and radiochemical data. A lower limit of 3.3 x 10E8 s on the neutron-antineutron oscillation time is derived from the Super-Kamiokande I new lower limit of 1.77 x 10E32 yr on the neutron lifetime in oxygen. Antineutron scattering lengths in carbon and nickel, needed in trap experiments using ultracold neutrons, are calculated from updated antinucleon optical potentials at threshold, with results shown to be largely model independent.

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