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Title: Search for a Stable Six-Quark State at BABAR

Journal Article · · Physical Review Letters
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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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Cited By (4)

SDSS-IV MaNGA: effects of morphology in the global and local star formation main sequences journal July 2019
An unusual transient following the short GRB 071227 journal July 2019
Deuteronlike Heavy Dibaryons from Lattice Quantum Chromodynamics journal October 2019
SDSS-IV MaNGA: Effects of Morphology in the global and local Star Formation Main Sequences text January 2019

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