Search for Dark Matter in Upsilon Decays at BABAR Experiment

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 $\mathrm{{\rm Y}}(4S)\to \mathrm{\Lambda }\bar{\mathrm{\Lambda }}$. Based on a data sample of $\mathrm{{\rm Y}}(2S)$ and $\mathrm{{\rm Y}}(3S)$ decays collected by the BABAR Experiment we report the most recent results and set stringent limits on the existence of such exotic particle.