Baryon-Number Violation by Two Units and the Deuteron Lifetime

Oosterhof, F., Long, B., De Vries, J., Timmermans, R. G. E. & Van Kolck, U., 29-Apr-2019, In : Physical Review Letters. 122, 17, 6 p., 172501.

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  • Baryon-Number Violation by Two Units and the Deuteron Lifetime

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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
Article number172501
Number of pages6
JournalPhysical Review Letters
Issue number17
Publication statusPublished - 29-Apr-2019



ID: 91020934