Journal Article

FZJ-2020-01415

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Neutron-antineutron oscillations in the deuteron studied with $NN$ and $\bar NN$ interactions based on chiral effective field theory

Haidenbauer, J. (Corresponding author)FZJ* ; Meißner, U.-G.FZJ*

2020
IOP Publ. Bristol [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/24561  doi:10.1088/1674-1137/44/3/033101

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 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.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Theorie der starken Wechselwirkung (IKP-3)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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