Search for the glueball candidates f(0)(1500) and f(J)(1710) in gamma gamma collisions
2000
Abstract Data taken with the ALEPH detector at LEP1 have been used to search for γγ production of the glueball candidates f 0 (1500) and f J (1710) via their decay to π + π − . No signal is observed and upper limits to the product of γγ width and π + π − branching ratio of the f 0 (1500) and the f J (1710) have been measured to be Γ(γγ→f 0 (1500))· B R (f 0 (1500)→π + π − ) keV and Γ(γγ→f J (1710))· B R (f J (1710)→π + π − ) keV at 95% confidence level.
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