The cross sections of the reactions <(p)over bar p> --> phi phi, phi K+K- and 4K(+/-) have been measured by the JETSET (PS202) experiment at CERN in the invariant mass range from 2.15 to 2.43 GeV/c(2). A spin-parity analysis of the phi phi system has been performed. The absolute value of the phi phi cross section and the ratios sigma(phi phi)/sigma(phi K+K-), sigma(phi phi)/sigma(4K(+/-)) are large, in marked violation of the OZI rule. Waves of quantum numbers J(PC) = 2(++) give the dominant contribution near threshold.
phi phi excitation function at LEAR
PALANO, Antimo;
1997-01-01
Abstract
The cross sections of the reactions <(p)over bar p> --> phi phi, phi K+K- and 4K(+/-) have been measured by the JETSET (PS202) experiment at CERN in the invariant mass range from 2.15 to 2.43 GeV/c(2). A spin-parity analysis of the phi phi system has been performed. The absolute value of the phi phi cross section and the ratios sigma(phi phi)/sigma(phi K+K-), sigma(phi phi)/sigma(4K(+/-)) are large, in marked violation of the OZI rule. Waves of quantum numbers J(PC) = 2(++) give the dominant contribution near threshold.File in questo prodotto:
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