Baryon-Number Violation by Two Units and the Deuteron Lifetime

F. Oosterhof, B. Long, J. De Vries, R. G.E. Timmermans, U. Van Kolck

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

We calculate the lifetime of the deuteron with dimension-nine quark operators that violate baryon number by two units. We construct an effective field theory for |ΔB|=2 interactions that give rise to neutron-antineutron (n-n) oscillations and dinucleon decay within a consistent power counting. We calculate the ratio of the deuteron lifetime to the square of the n-n oscillation time up to next-to-leading order. Our result, which is analytical and has a quantified uncertainty, is smaller by a factor ≃2.5 than earlier estimates based on nuclear models, which impacts the indirect bound on the n-n oscillation time and future experiments. We discuss how combined measurements of n-n oscillations and deuteron decay can help to identify the sources of baryon-number violation.

Original languageEnglish (US)
Article number172501
JournalPhysical review letters
Volume122
Issue number17
DOIs
StatePublished - Apr 29 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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