Perturbative Renormalization of Neutron-Antineutron Operators

@article{Buchoff2016PerturbativeRO,
  title={Perturbative Renormalization of Neutron-Antineutron Operators},
  author={Michael I. Buchoff and Michael Wagman},
  journal={Physical Review D},
  year={2016},
  volume={93},
  pages={016005}
}
Two-loop anomalous dimensions and one-loop renormalization scheme matching factors are calculated for six-quark operators responsible for neutron-antineutron transitions. When combined with lattice QCD determinations of the matrix elements of these operators, our results can be used to reliably predict the neutron-antineutron vacuum transition time, $\tau_{n\bar{n}}$, in terms of basic parameters of baryon-number violating beyond-the-Standard-Model theories. The operators are classified by… 

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