Baryon-Number Violation by Two Units and the Deuteron LifetimeOosterhof, 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.
Research output: Contribution to journal › Article › Academic › peer-review
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.
|Number of pages||6|
|Journal||Physical Review Letters|
|Publication status||Published - 29-Apr-2019|
- NEUTRON-ANTINEUTRON OSCILLATIONS, TRANSITION OPERATORS, LIMITS