# EPS-HEP2019

10-17 July 2019
Ghent
Europe/Brussels timezone

## Search for a stable six-quark state in $\Upsilon$ decays at $BABAR$

11 Jul 2019, 14:30
20m
Campus Ledeganck - Aud. 2 (Ghent)

### Campus Ledeganck - Aud. 2

#### Ghent

Parallel talk Dark Matter

### Speaker

Gerald Eigen (University of Bergen (NO))

### Description

Recent investigations have suggested that the six-quark combination $uuddss$ could be a deeply bound state ($S$) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in $\Upsilon \to S \bar{\Lambda} \bar{\Lambda}$ decays with the $BABAR$ experiment. No signal is observed, and limits on the combined $\Upsilon(2S,3S) \to S \bar{\Lambda} \bar{\Lambda}$ branching fraction set stringent limits on the existence of such exotic particles.

### Primary authors

Fabio Anulli (Sapienza Universita e INFN, Roma I (IT)) Gerald Eigen (University of Bergen (NO))