Violation of the Okubo-Zweig-Iizuka rule in the decay mode B(1235)→phi(1020)+π

The Okubo-Zweig-Iizuka rule forbids the transition B(1235)→phiπ. Unitarity, however, induces a non-vanishing amplitude for B→phiπ. The amplitude is estimated using dispersion relations. The absorptive part is shown to be small contributing less than 100 keV to the partial width GAMMA(B→phiπ). For the dispersive part, the contributions of the Ksup(*)Ksup(*) and Ksup(**)K intermediate states are evaluated. It is pointed out that the Ksup(*)Ksup(*) state does not contribute significantly. The dispersive part contributes about 300 keV to the partial width. Thus unitarity correction to the Okubo-Zweig-Iizuka rule gives the partial width GAMMA(B→phiπ) to be around 300-400 keV compared with the present experimental upper limit of 1.9 MeV. (author)