Search for Dark Matter in Upsilon Decays at BABAR Experiment

TL;DR

This paper reports a search for a hypothesized stable sexaquark particle in Upsilon decays using BABAR data, aiming to identify a potential dark matter candidate and setting new experimental limits.

Contribution

First experimental search for a stable sexaquark in Upsilon decays, providing the most recent limits on its existence.

Findings

No evidence for sexaquark observed.

Set the most stringent limits to date on sexaquark production.

Constrained the parameter space for dark matter models involving sexaquarks.

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