Neutron-Antineutron transitions from exotic instantons: how fast they might be and further implications

Abstract

We discuss implications of open string theory in B-violating low energy physics. In particular, exotic instantons can dynamically generate effective six quarks' operator, leading to a neutron-antineutron transition. Proton is not destabilized and flavor changing neutral currents are under control.

Comments: In preparation for the proceeding of MGM14. Discussions on exotic instantons in high energy colliders added. Typos were corrected in the introduction