Search for a Stable Six-Quark State at BABAR
Journal Article
·
· Physical Review Letters
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 Υ→S$$\bar{Λ}\bar{Λ}$$ decays based on a sample of 90×10$$^{6}$$Υ(2S) and 110×106Υ(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined Υ(2S,3S) → S$$\bar{Λ}\bar{Λ}$$ branching fraction in the range (1.2-1.4) × 10-7 are derived for mS < 2.05 GeV. These bounds set stringent limits on the existence of such exotic particles.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- BaBar Collaboration
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1550864
- Journal Information:
- Physical Review Letters, Vol. 122, Issue 7; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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