The reaction (p) over bar p --> K+K- pi(0) was analysed for antiproton annihilations at rest at three hydrogen target densities. A strong dependence of the (p) over bar p --> phi pi(0) yield on the quantum numbers of the initial state is observed. The branching ratio of the phi pi(0) channel from the S-3(1) initial state is more than 15 times larger than the one from the P-1(1) state. A large apparent violation of the OZI rule for tensor meson production from (p) over bar p-annihilations from the P-waves (1(++) + 2(++)) is observed: R-exp(f(2)'pi(0)/f(2)pi(0)) = (149 +/- 20) . 10(-3), significantly exceeding the OZI-rule prediction R = 16 . 10(-3). (C) 1998 Elsevier Science B.V. All rights reserved.
Study of phi and f '(2)(1525) meson production in (p)over-bar-p annihilation at rest
Cicalo C;PUDDU, GIOVANNA;USAI, GIANLUCA;
1998-01-01
Abstract
The reaction (p) over bar p --> K+K- pi(0) was analysed for antiproton annihilations at rest at three hydrogen target densities. A strong dependence of the (p) over bar p --> phi pi(0) yield on the quantum numbers of the initial state is observed. The branching ratio of the phi pi(0) channel from the S-3(1) initial state is more than 15 times larger than the one from the P-1(1) state. A large apparent violation of the OZI rule for tensor meson production from (p) over bar p-annihilations from the P-waves (1(++) + 2(++)) is observed: R-exp(f(2)'pi(0)/f(2)pi(0)) = (149 +/- 20) . 10(-3), significantly exceeding the OZI-rule prediction R = 16 . 10(-3). (C) 1998 Elsevier Science B.V. All rights reserved.
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