Vector meson angular distributions in proton-proton collisions

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-.

7 pages, 4 eps-figures, to appear in PRC

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Cited by in corpus (10)

• Di-Electron Bremsstrahlung in Intermediate-Energy pn and Dp Collisions
• The Near-Threshold Production of Phi Mesons in pp Collisions
• Dilepton production in heavy-ion collisions with in-medium spectral functions of vector mesons
• The production of K+K- pairs in proton-proton collisions at 2.83 GeV
• Systematic study of the pp -> pp omega reaction
• Comparison of Isoscalar Vector Meson Production Cross Sections in Proton-Proton Collisions
• Di-Electrons from Resonances in Nucleon-Nucleon Collisions
• Dilepton and vector meson production in elementary and in heavy ion reactions
• Regarding the possibility to observe the LHCb hidden-charm strange pentaquark $P_{cs}(4459{)}^0$ in antikaon-induced $J/\psi$ meson production on protons and nuclei near the $J/\psi$$\Lambda$ production threshold
• Omega Production in pp Collisions