Search for Dark Matter in Upsilon Decays at BABAR Experiment

Abstract

Recent investigations have suggested that the singlet six-quark combination $uuddss$ may be a deeply bound state $S$, called Sexaquark. An essentially stable state $S$ is a potentially excellent Dark Matter candidate. We present the first search for a stable, doubly strange six-quark state in the decays of ${\rm Y}(4S)\to \Lambda \bar{\Lambda }$. Based on a data sample of ${\rm Y}(2S)$ and ${\rm Y}(3S)$ decays collected by the BABAR Experiment we report the most recent results and set stringent limits on the existence of such exotic particle.

Comments: Contributed to the Proceedings of the 16th International Conference on Topics in Astroparticle and Underground Physics, Toyama, Japan. This work was supported by the U.S. Department of Energy