Measurement of σ(e+e-→ψ(3770)→hadrons) at Ec.m.=3773MeV
Abstract
We measure the cross section for e+e-→ψ(3770)→hadrons at Ec.m.=3773MeV to be (6.38±0.08-0.30+0.41)nb using the CLEO detector at the CESR e+e- collider. The difference between this and the e+e-→ψ(3770)→DD¯ cross section at the same energy is found to be (-0.01±0.08-0.30+0.41)nb. With the observed total cross section, we extract Γee(ψ(3770))=(0.204±0.003-0.027+0.041)keV. Uncertainties shown are statistical and systematic, respectively.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2006
- DOI:
- 10.1103/PhysRevLett.96.092002
- arXiv:
- arXiv:hep-ex/0512038
- Bibcode:
- 2006PhRvL..96i2002B
- Keywords:
-
- 13.25.Gv;
- 13.66.Bc;
- 14.40.Gx;
- Decays of J/psi Upsilon and other quarkonia;
- Hadron production in e<sup>-</sup>e<sup>+</sup> interactions;
- Mesons with S=C=B=0 mass>2.5 GeV;
- High Energy Physics - Experiment
- E-Print:
- 9 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2005/, Submitted to PRL