Mechanisms of the Reaction $π^-p\to a^0_0(980)n\toπ^0ηn$ at High Energies

Details Mechanisms of the Reaction $π^-p\to a^0_0(980)n\toπ^0ηn$ at High Energies Mechanisms of the Reaction $π^-p\to a^0_0(980)n\toπ^0ηn$ at High Energies

1997-10-30

arxiv.org/abs/hep-ph/9710537v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at HADRON'97

Scientific paper

Over the last twenty years, it was assumed that the reaction $\pi^-p\to a^0_0(980)n\to\pi^0\eta n$ at high energies is dominated by $b_1$ Regge pole exchange. We show that the new Brookhaven and Serpukhov data on the $t$ distributions for this reaction can be explained within the framework of the Regge pole model only if the $\rho_2$ Regge pole exchange conspiring with its daughter plays a crucial role. The tentative estimates of the absolute $\pi^-p\to a^0_0(980)n\to\pi^0\eta n$ reaction cross section are obtained. The contributions of the one-pion exchange mechanism and the Regge cuts are also estimated.

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