• Corpus ID: 245704664

A Stable Sexaquark: Overview and Discovery Strategies

@inproceedings{Farrar2022ASS,
  title={A Stable Sexaquark: Overview and Discovery Strategies},
  author={Glennys R. Farrar},
  year={2022}
}

• G. Farrar
• Published 4 January 2022
• Physics

The neutral, flavor singlet scalar uuddss bound state – the sexaquark, S – may have a low enough mass to be stable or extremely long-lived. Here we review mass estimates and production expectations and show that laboratory experiments to date do not rule out such a long-lived state. An S with mass below 2054 MeV is either absolutely stable or has a lifetime greater than the age of the Universe. Detection of a stable S in accelerator experiments is very challenging. An examination of the experimental literature shows that such an effectively stable state would have escaped detection. The strongest laboratory constraint on a long-lived S comes from the lower-bound on its formation time in a doubly-strange hypernucleus; this constraint is, however, not stringent enough to exclude a stable S. We develop strategies to discover it. A stable S would be an attractive dark matter candidate. Relevant astrophysical and cosmological observations, which show that sexaquark dark matter (SDM) is consistent with all current knowledge, are briefly reviewed.