Parity violation in $d\vec{\gamma }->np$ with pionless effective theory

Abstract

We consider a pionless effective theory with dibaryon fields for the description of the weak process involving two nucleons. We construct leading order Lagrangians that contain nucleon-dibaryon weak coupling constants. We calculate the physical observable in the photodisintegration of the deuteron at threshold and obtain the result in terms of the nucleon-dibaryon weak coupling constants. Relation to existing calculations is discussed.

Comments: Contribution to "Fourth Asia-Pacific Conference on Few-Body Problems in Physics 2008", Depok, Indonesia, August 19-23, 2008