The reaction pp-->p(f)(pi+pi-gamma)p(s), where the pi+pi-gamma system is centrally produced, has been studied at 300 GeV/c. The pi+pi-gamma mass spectrum shows evidence for a rho-0-gamma decay mode of the eta' (958) and f1 (1285). The branching ratio (f1 (1285)-->eta-pi+pi-)/(f1 (1285)-->rho-0-gamma) is found to be 5.0+/-0.7.No evidence is found for a rho-0 (770) gamma decay mode of the E/f1 (1420) for which an upper limit BR(E/f1(1420)-->rho-0-gamma)<0.08 at 95% CL is found.
STUDY OF THE PI+PI-GAMMA SYSTEM CENTRALLY PRODUCED IN THE REACTION PP-]PF (PI+PI-GAMMA) PS AT 300 GEV/C
DI BARI, Domenico;PALANO, Antimo;
1992-01-01
Abstract
The reaction pp-->p(f)(pi+pi-gamma)p(s), where the pi+pi-gamma system is centrally produced, has been studied at 300 GeV/c. The pi+pi-gamma mass spectrum shows evidence for a rho-0-gamma decay mode of the eta' (958) and f1 (1285). The branching ratio (f1 (1285)-->eta-pi+pi-)/(f1 (1285)-->rho-0-gamma) is found to be 5.0+/-0.7.No evidence is found for a rho-0 (770) gamma decay mode of the E/f1 (1420) for which an upper limit BR(E/f1(1420)-->rho-0-gamma)<0.08 at 95% CL is found.File in questo prodotto:
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