Restriction on the Neutron-Antineutron Oscillations from the SNO Data on the Deuteron Stability

Abstract

Restriction on the neutron-antineutron oscillation time in vacuum is obtained from latest SNO data on the deuteron stability, ${\tau }_D>3.01^{.}10^{31}$ years. Calculation performed within the quantum field theory based diagram technique reproduces satisfactorily results of the potential approach previously developed. The dependence of the obtained restriction on the total spin of the annihilating $N\bar{N}$ system and the deuteron wave function modifications is discussed.

Comments: 8 pages, 1 fig.; presented at the 3-d International Workshop on Baryon and Lepton number Violation (BLV-2011), Gatlinburg, Tennessee, USA, Sept. 22-24 2011 and Session of the Nuclear Physics Department of RAS, ITEP, Moscow, Nov. 21-25 2011; submitted to JETP Lett. [Pisma Zh.Eksp.Teor.Fiz]