Publication Date:
1977
abstract:
Following reports of anomalous dielectron prediction in the mass region near 6 GeV at 400 GeV, we searched for an enhancement in the reaction e+e-→hadrons and e+e-→e+e- at SPEAR in the center-of-mass energy range 5.67-6.43 GeV. The leptonic and hadronic cross sections show no statistically significant peaks. In this mass range, 95% confidence level upper limits for the decay width into electron pairs are less than 200 eV for a narrow resonance which decays predominantly either into hadrons or into electron pairs.
Iris type:
1.1 Articolo in rivista
Keywords:
Electron-positron colliders; SPEAR
List of contributors:
D., Aschman; D., Coyne; D., Groom; G., O'Neill; H., Sadrozinski; K., Shinsky; M., Cavalli Sforza; G., Goggi; F., Impellizzeri; Livan, Michele; F., Pastore; B., Rossini; D., Badtke; B., Barnett; L., Jones; G., Zorn; C., Biddick; T., Burnett; G., Masek; E., Miller; J., Smith; J., Stronski; M., Sullivan; W., Vernon; L., Keller; D., Lyon
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