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Search for a stable six-quark state at BABAR
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(2019) Search for a stable six-quark state at BABAR. Physical Review Letters, 122 (7). 072002 . doi:10.1103/PhysRevLett.122.072002 ISSN 0031-9007.
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WRAP-search-stable-six-quark-state-BABAR-Gershon-2019.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (595Kb) | Preview |
Official URL: https://doi.org/10.1103/PhysRevLett.122.072002
Abstract
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 fora stable, doubly strange six-quark state in Υ→S ̄ Λ ̄Λ decays based on a sample of 90×106 Υ (2S) and 110×106 Υ (3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined Υ (2S,3S) → S ̄Λ ̄Λ branching fraction in the range (1.2–1.4)×10−7arederived for mS<2.05 GeV. These bounds set stringent limits on the existence of such exotic particles
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Library of Congress Subject Headings (LCSH): | Quarks, Dark matter (Astronomy) | ||||||
| Journal or Publication Title: | Physical Review Letters | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 0031-9007 | ||||||
| Official Date: | 22 February 2019 | ||||||
| Dates: |
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| Volume: | 122 | ||||||
| Number: | 7 | ||||||
| Article Number: | 072002 | ||||||
| DOI: | 10.1103/PhysRevLett.122.072002 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Date of first compliant deposit: | 5 April 2019 | ||||||
| Date of first compliant Open Access: | 8 April 2019 |
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