Omega- and Phi-meson production in pn -> dV reactions and OZI-rule violation

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dc.creatorKondratyuk, L. A.
dc.creatorGolubeva, Ye. S.
dc.creatorBuescher, M.
dc.date1998-08-18
dc.date.accessioned2026-07-07T05:42:34Z
dc.date.available2026-07-07T05:42:34Z
dc.descriptionWe investigate the reactions p n -> d omega and p n -> d phi close to threshold and at higher energies. Near threshold we calculate the S-wave amplitudes within the framework of the two-step model which is described by a triangle graph with pi-mesons in the intermediate state and find a ratio of the S-wave amplitudes squared of R =|A(phi)|^2/|A(omega)|^2 = (4-8) x 10^{-3}. Any significant enhancement of the experimental value of R(phi/omega) over this prediction can be interpreted as a possible contribution of the intrinsic s - anti s component in the nucleon-wave function. We present arguments that there is a strong resonance effect in the omega N channel close to threshold. At higher energies we calculate the differential cross sections of the reactions p n -> d omega, p n -> d phi and the ratio of the phi/omega yields within the framework of the quark-gluon string model. An irregular behavior of the phi/omega-ratio is found at s <= 12 GeV^2 due to the interference of the t- and u-channel contributions.
dc.description19 pages, 7 figures, gzipped tar file
dc.identifierhttps://arxiv.org/abs/nucl-th/9808050
dc.identifierhttp://arxiv.org/abs/nucl-th/9808050
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/82981
dc.subjectNuclear Theory
dc.titleOmega- and Phi-meson production in pn -> dV reactions and OZI-rule violation
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