Abstract
An apparatus consisting of a superconducting solenoid magnet, cylindrical drift-chambers, and two arrays of lead-glass Čerenkov counters has been used at the CERN ISR to study the production of e+e- pairs of invariant mass above 6.5 GeV/c2. Cross sections for the continuum and the Υ{hooked} family of resonances are presented, as well as the mean transverse momentum 〈pT〉 of the electron-positron pairs in the continuum and resonance region.
Original language | English (US) |
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Pages (from-to) | 398-402 |
Number of pages | 5 |
Journal | Physics Letters B |
Volume | 87 |
Issue number | 4 |
DOIs | |
State | Published - Nov 19 1979 |
Externally published | Yes |
Bibliographical note
Funding Information:The production of massive electron-positron pairs in proton-proton collisions has been measured at a centre-of-mass energy (x/~) of 62.4 GeV at the CERN ISR as part of a general study of high transverse mo- 1 Present address: Physics Dept., The Johns Hopkins Universi-ty, Baltimore, MD, USA. 2 Present address: University of Skopje, Macedonia, Yugoslavia. a Present address: SLAC, Stanford, CA, USA. 4 Present address: FNAL, Batavia, IL, USA. s Present address: Physics Dept., Princeton University, Prince-ton, N J, USA. 6 Present address: Physics Dept., University of Manchester, UK. 7 Permanent address: Physics Dept., University of Washington, Seattle, WA, USA. 8 Research'supported in part by the National Science Founda-tion. 9 Research supported in part by the Deparment of Energy.