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- W2897078762 abstract "An observation of neutron-antineutron oscillations ( n - n ¯), which violate both B and B - L by 2 units, would constitute a fundamental discovery and contribute to our understanding of the baryon asymmetry of the universe. A sufficiently stringent upper constraint on this process would also make a major contribution by ruling out the possibility of post-sphaleron baryogenesis (PSB) involving first-generation quarks, which would mean that sphaleron transitions at the electroweak scale are essential for baryogenesis within the Sakharov paradigm. We show that one can design an experiment with free n using existing or projected neutron sources that can reach the sensitivity needed to rule out PSB if one allows the n and n¯, with sufficiently small tangential velocity, to coherently reflect from n / n ¯ mirrors composed of certain nuclei. We show that the sensitivity of a future experiment can be greatly improved, and a more compact and less expensive apparatus can be realized. A sensitivity gain of ~ 10 4 in the oscillation probability relative to the existing free- n limit can be reached if one is willing to adopt a long flight path with a horizontal guide viewing a cold neutron source, or a significantly shorter flight path with a vertical guide viewing a very cold neutron source." @default.
- W2897078762 created "2018-10-26" @default.
- W2897078762 creator A5007086513 @default.
- W2897078762 creator A5020527266 @default.
- W2897078762 creator A5025898262 @default.
- W2897078762 creator A5040306675 @default.
- W2897078762 creator A5067081745 @default.
- W2897078762 date "2018-01-01" @default.
- W2897078762 modified "2023-10-03" @default.
- W2897078762 title "A new operating mode in experiments searching for free neutron-antineutron oscillations based on coherent neutron and antineutron mirror reflections" @default.
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- W2897078762 doi "https://doi.org/10.1051/epjconf/201819101005" @default.
- W2897078762 hasPublicationYear "2018" @default.
- W2897078762 type Work @default.