Precision measurement of the quasi-free pn->dphi reaction close to threshold

Abstract

The quasi-free pn->dphi reaction has been studied at the Cooler Synchrotron COSY-Juelich, using the internal proton beam incident on a deuterium cluster-jet target and detecting a fast deuteron in coincidence with the K+K- decay of the phi-meson. The energy dependence of the total and differential cross sections are extracted for excess energies up to 80 MeV by determining the Fermi momentum of the target neutron on an event-by-event basis. Though these cross sections are consistent with s-wave production, the kaon angular distributions show the presence of p waves at quite low energy. Production on the neutron is found to be stronger than on the proton but not by as much as for the eta-meson.

4 Pages, 3 Figures, version 2, resubmitted to Phys. Rev. Lett

References in corpus (1)

• The Near-Threshold Production of Phi Mesons in pp Collisions

Cited by in corpus (14)

• Measurement of the in-medium phi-meson width in proton-nucleus collisions
• Formation of eta-prime(958)-mesic nuclei by (p,d) reaction
• Kaon Pair Production in Proton--Proton Collisions
• Near-threshold $\varphi$ meson production in proton-nucleus reactions and $\varphi$ width in finite nuclei
• $\varphi$ meson transparency in nuclei from $\varphi N$ resonant interactions
• Near threshold production of the eta meson via the quasi-free pn --> pn eta reaction
• Measurement of the pn -> dK^+K^- total cross section close to threshold
• Evidence of N*(1535) resonance contribution in the pn->dϕreaction
• Coupled-channel effects in the pp -> ppK+K- reaction
• Determination of target thickness and luminosity from beam energy losses
• Study of omega-meson production in pp collisions at ANKE
• System size dependence of strange particle correlations in Cu+Cu and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV in STAR at RHIC
• Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV
• Absorption of phi mesons in near-threshold proton-nucleus reactions