Search for neutron-antineutron oscillations at the Sudbury Neutrino Observatory



Aharmim, B, Ahmed, SN, Anthony, AE, Barros, N, Beier, EW, Bellerive, A, Beltran, B, Bergevin, M, Biller, SD, Boudjemline, K
et al (show 114 more authors) (2017) Search for neutron-antineutron oscillations at the Sudbury Neutrino Observatory. PHYSICAL REVIEW D, 96 (9). 092005-.

This is the latest version of this item.

[thumbnail of 1705.00696.pdf] Text
1705.00696.pdf - Submitted version

Download (777kB)
[thumbnail of Search for neutron.pdf] Text
Search for neutron.pdf - Author Accepted Manuscript

Download (823kB) | Preview

Abstract

Tests on B-L symmetry breaking models are important probes to search for new physics. One proposed model with Δ(B-L)=2 involves the oscillations of a neutron to an antineutron. In this paper, a new limit on this process is derived for the data acquired from all three operational phases of the Sudbury Neutrino Observatory experiment. The search concentrated on oscillations occurring within the deuteron, and 23 events were observed against a background expectation of 30.5 events. These translated to a lower limit on the nuclear lifetime of 1.48×1031 yr at 90% C.L. when no restriction was placed on the signal likelihood space (unbounded). Alternatively, a lower limit on the nuclear lifetime was found to be 1.18×1031 yr at 90% C.L. when the signal was forced into a positive likelihood space (bounded). Values for the free oscillation time derived from various models are also provided in this article. This is the first search for neutron-Antineutron oscillation with the deuteron as a target.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 23 Jan 2020 11:27
Last Modified: 16 Mar 2024 20:13
DOI: 10.1103/PhysRevD.96.092005
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3071710

Available Versions of this Item