Limit on the neutron-antineutron transitions in the alternative models

Abstract

We summarize our study of the neutron-antineutron transition in medium and nuclei in the framework of the field-theoretical approach. The models based on the diagram technique for direct reactions, potential description of antineutron-medium interaction are considered as well. The lower limit on the free-space neutron-antineutron oscillation time $\tau$ is in the range: $10^{16}\mathrm{yr}>\tau >1.2\cdot 10^9\mathrm{s}$.

Comments: We summarize our study and so the partial text overlap with arXiv:1101.2310, arXiv:1111.5705 takes place. arXiv admin note: includes the entirety of arXiv:1101.2310 and half of arXiv:1111.5705