Search for the glueball candidates f0(1500) and fJ(1710) in γγ collisions

Fachbereich Physik, Universität Siegen, D-57068 Siegen, Germany16
Physics Letters B (Impact Factor: 6.13). 10/2014; DOI: 10.1016/S0370-2693(99)01390-8


Data taken with the ALEPH detector at LEP1 have been used to search for gamma gamma production of the glueball candidates f(0)(1500) and f(j)(1710) via their decay to pi(+)pi(-). No signal is observed and upper limits to the product of gamma gamma width and pi(+)pi(-) branching ratio of the f(0)(1500) and the f(j)(1710) have been measured to be Gamma (gamma gamma --> f(0)(1500)) . BR(f(0)(1500) --> pi(+)pi(-)) < 0.31 keV and Gamma (gamma gamma --> f(j)(1710)) . BR (f(j)(1710) --> pi(+)pi(-)) < 0.55 keV at 95% confidence level.

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Available from: Gianrossano Giannini, Feb 06, 2015
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