| ホーム > L3 Preprints > $\rho$ meson production in two photon collision at LEP with L3 detector |
| Article | |
| Title | $\rho$ meson production in two photon collision at LEP with L3 detector |
| Author(s) | Fedin, O (St Petersburg Nucl Phys Inst) |
| Publication | 2000 |
| In: | Acta Phys. Pol. B 31, 10-11 (2000) pp.2381-6 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LEP ; L3 |
| Abstract | The reaction gamma gamma to pi /sup +/ pi /sup -/ pi /sup +/ pi /sup -/ has been studied with the L3 detector at LEP. The data sample was collected by L3 at centre-of-mass energies from 160 GeV to 202 GeV with a total integrated luminosity of 466.2 pb/sup -1/. The process is dominated by rho /sup 0/ rho /sup 0/ production. A spin-parity analysis of the rho /sup 0/ rho /sup 0/ system for W/sub gamma gamma /<3 GeV shows a dominance of J/sup P/=2/sup +/ and helicity 2. A contribution of J/sup P/=0/sup +/ is also observed whereas contributions of negative parity states are found to be negligible. (10 refs). |