Production of J / {psi} Mesons from {sub x{sub c} Meson decays in {ovr p}p collisions at {radical}{ovr s} = 1.8 TeV.
We have measured the fraction of J/{psi} mesons originating from X{sub c} meson decays in p{ovr p} collisions at sqrt[s] = 1.8 TeV. The fraction, for P{sub T}{sup J/{psi}}>4.0 GeV/c and |{eta}{sup J/{psi}}| < 0.6, not including contributions from b flavored hadrons, is 29.7%{+-}1.7%(stat){+-}5.7%(syst). We have determined the cross sections for J/{psi} mesons originating from X{sub c} decays and for directly produced J/{psi} mesons. We have found that direct J/{psi} production is in excess of the prediction of the color singlet model by the same factor found for direct {psi}(2S) production.
- Research Organization:
- Argonne National Laboratory (ANL)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942323
- Report Number(s):
- ANL-HEP-PR-98-76
- Journal Information:
- Phys. Rev. Lett., Journal Name: Phys. Rev. Lett. Journal Issue: Jul. 28, 1997 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- ENGLISH
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