Upper limits for the photoproduction cross section for the Φ⁻⁻(1860) pentaquark state off the deuteron
Journal Article
·
· Physical Review. C. Nuclear Physics
We searched for the Φ⁻⁻(1860) pentaquark in the photoproduction process off the deuteron in the Ξ⁻π⁻-decay channel using CLAS. The invariant-mass spectrum of the Ξ⁻π⁻ system does not indicate any statistically significant enhancement near the reported mass M=1.860 GeV. The statistical analysis of the sideband-subtracted mass spectrum yields a 90%-confidence-level upper limit of 0.7 nb for the photoproduction cross section of Φ⁻⁻(1860) with a consecutive decay intoΞ⁻π⁻ in the photon-energy range 4.5GeVγ<5.5GeV.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1099072
- Alternate ID(s):
- OSTI ID: 1034415
- Journal Information:
- Physical Review. C. Nuclear Physics, Journal Name: Physical Review. C. Nuclear Physics Journal Issue: 1 Vol. 85; ISSN 0556-2813; ISSN PRVCAN
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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