SEARCH FOR STRUCTURE IN SIGMA (E+ E- ---> HADRONS) BETWEEN S**(1/2) = 10.34-GEV AND 11.6-GEV
1982
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Abstract: (APS)
The CUSB detector at the Cornell Electron Storage Ring has been used to measure R=σ(e+e−→hadrons)σ(e+e−→μ+μ−) in the c.m. energy regions between the ϒ′′ and the ϒ′′′, and above the ϒ′′′ up to s=11.6 GeV, with integrated luminosities of 5000 and 2100 nb−1, respectively. No narrow resonances are observed, and limits on the leptonic widths are presented. The average value of R increases by 0.31±0.06 across the flavor threshold.- ELECTRON POSITRON: COLLIDING BEAMS
- COLLIDING BEAMS: ELECTRON POSITRON
- ELECTRON POSITRON: ANNIHILATION
- ANNIHILATION: ELECTRON POSITRON
- HADRON: ELECTROPRODUCTION
- ELECTROPRODUCTION: HADRON
- HADRON: MULTIPLE PRODUCTION
- MULTIPLE PRODUCTION: HADRON
- TOTAL CROSS SECTION: RATIO
- RATIO: TOTAL CROSS SECTION
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