STUDY OF THE REACTION (P)OVER-BAR-P-]PHI-PHI FROM 1.1 TO 2.0 GEV C/

A study has been performed of the reaction <(p)over bar p>-->4K(+/-) u sing in-flight antiprotons from 1.1 to 2.0 GeV/c incident momentum int eracting with a hydrogen jet target. The reaction is dominated by the production of a pair of phi mesons. The <(p)over bar p>-->phi phi cros s section rises sharply above threshold and then falls continuously as a function of increasing antiproton momentum. The overall magnitude o f the cross section exceeds expectations from a simple application of the Okubo-Zweig-Iizuka rule by two orders of magnitude. In a fine scan around the xi/f(J)(2230) resonance, no structure is observed. A limit is set for the double branching ratio B(xi--><(p)over bar p>) x B(xi- ->phi phi)<6 x 10(-5) for a spin 2 resonance of M=2.235 GeV and Gamma= 15 MeV.