Search for the glueball candidates f 0 ( 1500 ) and f J ( 1710 ) in γγ collisions The ALEPH Collaboration

Data taken with the ALEPH detector at LEP1 have been used to search for γγ production of the glueball candidates f0(1500) and fJ(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 f0(1500) and the fJ(1710) have been measured to be Γ(γγ → f0(1500)) · BR(f0(1500) → ππ) < 0.31 keV