On the sign of the pi-rho-omega coupling constant

Abstract

It is shown that the relative sign between the $NN\omega$ and $\pi \rho \omega$ coupling constants can be determined most sensitively from $\omega$ production processes in $NN$ collisions. Recent data on these reactions clearly favor the sign of the $\pi \rho \omega$ coupling constant which is opposite to that inferred from studies of the photoproduction reaction in combination with the vector meson dominance assumption and used by many authors. Implication of this finding in the description of other reactions is discussed.

6 pages, 4 figures, REVTeX, to be published in Phys. Lett. B

References in corpus (2)

• Gauge-invariant approach to meson photoproduction including the final-state interaction
• Study of omega-meson production in pp collisions at ANKE

Cited by in corpus (2)

• Dynamical Coupled-Channel Model of $\pi N$ Scattering in the W $\le$ 2 GeV Nucleon Resonance Region
• Pion in the Holographic Model with 5D Yang-Mills Fields