TY  - JOUR
AU  - Haidenbauer, Johann
AU  - Meißner, Ulf-G.
TI  - Neutron-antineutron oscillations in the deuteron studied with $NN$ and $\bar NN$ interactions based on chiral effective field theory
JO  - Chinese physics / C High energy physics and nuclear physics C
VL  - 44
IS  - 3
SN  - 2058-6132
CY  - Bristol [u.a.]
PB  - IOP Publ.
M1  - FZJ-2020-01415
SP  - 033101
PY  - 2020
AB  - 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 NN $ interactions derived within chiral effective field theory (EFT). This results in $ (2.6\pm 0.1) \times 10^{22}\,\tau^2_{n-\bar n} $ 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. 
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000519030700001
DO  - DOI:10.1088/1674-1137/44/3/033101
UR  - https://juser.fz-juelich.de/record/874405
ER  -