Neutron-antineutron oscillations in the deuteron studied with $NN$ and $\bar{N}N$ interactions based on chiral effective field theory

Abstract

Neutron-antineutron ($n-\bar{n}$) oscillations in the deuteron are considered. Specifically, the deuteron lifetime is calculated in terms of the free-space $n-\bar{n}$ oscillation time ${\tau }_{n-\bar{n}}$ based on $NN$ and $\bar{N}N$ interactions derived within chiral effective field theory (EFT). This results in $(2.6\pm 0.1)\times 10^{22}{\tau }_{n-\bar{n}}^2$ s, which is close to the value obtained by Dover and collaborators more than three decades ago, but disagrees with recent EFT calculations that were performed within the perturbative scheme proposed by Kaplan, Savage, and Wise. Possible reasons for the difference are discussed.

5 pages, 1 figure

References in corpus (7)

• Improved chiral nucleon-nucleon potential up to next-to-next-to-next-to-leading order
• Lattice QCD determination of neutron-antineutron matrix elements with physical quark masses
• Energy-dependent partial-wave analysis of all antiproton-proton scattering data below 925 MeV/c
• Realistic calculations of nuclear disappearance lifetimes induced by neutron-antineutron oscillations
• Baryon-number violation by two units and the deuteron lifetime
• Deuteron Magnetic Quadrupole Moment From Chiral Effective Field Theory
• Chiral Perturbation Theory for Neutron-antineutron Oscillations

Cited by in corpus (9)

• Nuclear matrix elements from lattice QCD for electroweak and beyond-Standard-Model processes
• Neutron-Antineutron Oscillation Search using a 0.37 Megaton$\cdot$Year Exposure of Super-Kamiokande
• Neutron Stars with Baryon Number Violation, Probing Dark Sectors
• Particle Physics at the European Spallation Source
• Theoretical Analysis of Antineutron-Nucleus Data needed for Antineutron Mirrors in Neutron-Antineutron Oscillation Experiments
• $\Delta B=2$ neutron decay into antiproton mode $n\to \bar{p}{e}^{+}\nu (\bar{\nu })$
• Baryon Number Violation: From Nuclear Matrix Elements to BSM Physics
• Nucleon decay in the deuteron
• Reexamination of antinucleon-nucleon interactions in covariant chiral effective field theory