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Vector meson angular distributions in proton-proton collisions

Amand Faessler·C. Fuchs·M. I. Krivoruchenko·B. V. Martemyanov
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Abstract

The resonance model is used to analyze the omega- and phi-meson angular distributions in proton-proton collisions at sqrt{s} = 2.83 and 2.98 GeV. The assumption of dominant contributions from N^*(1720)3/2+ and N^*(1900)3/2+ resonances which both have, according to the pi N scattering multichannel partial-wave analysis and/or quark models predictions, dominant p_{1/2} N-omega decay modes yields the right pattern of the omega angular distribution at sqrt{s} = 2.83 GeV. The angular distribution at sqrt{s} = 2.98 GeV can be reproduced assuming the dominance of N^*(2000)5/2+ and N^*(1900)3/2+. The experimental phi-meson angular distributions do not shown any asymmetry which requires the existence of a massive negative-parity spin-half resonance. This resonance could be identified with the N^*(2090)1/2-.

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Amand Faessler, C. Fuchs, M. I. Krivoruchenko, B. V. Martemyanov. 2004-07-22. Vector meson angular distributions in proton-proton collisions. https://doi.org/10.1103/physrevc.70.035211

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