Production of eta mesons in nucleon-nucleon collisions

Abstract

A microscopic calculation of near-threshold eta-meson production in the reaction NN -> NNeta is presented. It is assumed that the eta meson is produced via direct emission and via elementary rescattering processes MN -> etaN of various mesons M = pi, rho, etc. As a novel feature the amplitudes for the latter production mechanism are taken from a multi-channel meson-exchange model of the pi N system developed by the Juelich group which contains explicitly the channels pi N, rho N, eta N, sigma N, and pi Delta. Furthermore, effects of the NN interaction in the final as well as in the initial state are taken into account microscopically. Our results are compared with recent data from the COSY and CELSIUS accelerator facilities. Reasonable agreement with available near-threshold cross section data for the reactions pp -> ppeta, pn -> pneta, and pn -> deta is found.

arXiv comment25 pages, 11 figures

References in corpus (25)

• What is the structure of the Roper resonance?
• Updated analysis of $\pi$N elastic scattering data to 2.1~GeV: The Baryon Spectrum
• Nucleon-nucleon elastic scattering to 3 GeV
• Close-to-threshold Meson Production in Hadronic Interactions
• Comparison of eta and eta' production in the pp -> pp eta(eta') reactions near threshold
• Near-Threshold eta Meson Production in Proton-Proton Collisions
• Novel approach to pion and eta production in proton-proton collisions near threshold
• The reaction $pp\to pp{\pi }^0$ near threshold
• S-wave eta'-proton FSI; phenomenological analysis of near-threshold production of pi0, eta, and eta' mesons in proton-proton collisions
• On the treatment of $NN$ interaction effects in meson production in $NN$ collisions
• Eta Meson Production in NN Collisions
• The production of eta-mesons in nucleon-nucleon collisions near threshold
• Role of the $\Delta$ isobar in the reaction $NN\to NN\pi$ near threshold
• Near threshold eta production in proton-proton collisions
• Eta-N Final State Interaction in incoherent Photoproduction of Eta-mesons from the Deuteron near Threshold
• Higher Partial Waves in p+p->p+p+eta near Threshold
• Eta and eta-prime meson production in the reaction pn -> dM near threshold
• Polarization phenomena in the reaction NN to NNpi near threshold
• A Covariant OBE Model for $\eta$ Production in NN Collisions
• Cross section and analyzing power of pol{p}p -> pn pi+ near threshold
• The Reaction $pp\to pp\eta$ and the eta-Nucleon and Nucleon-Nucleon Interactions
• Analysing power A_y in the reaction p(pol) p --> p p eta close to threshold
• Test of final state approximations using threshold $pp\to pp{\pi }^0$
• Toy Model for Pion Production II: The role of three-particle singularities
• Instantons and $\eta$ Meson Production near threshold in NN collisions

Cited by in corpus (34)

• Meson production in nucleon--nucleon collisions close to the threshold
• Near threshold enhancement of the ppbar mass spectrum in J/Psi decay
• Mass and $K\Lambda$ coupling of $N^{\ast }(1535)$
• Comment on "Mass and K Lambda coupling of N*(1535)"
• Pion-nucleon scattering in a meson-exchange model
• Experimental study of pp eta dynamics in the pp --> ppeta reaction
• Coupled-channels study of the ${\pi }^{-}p\to \eta n$ process
• The role of ${\Delta }^{++\ast }(1620)$ resonances in $pp\to n{K}^{+}{\Sigma }^{+}$ reaction and its important implications
• An analysis of the reaction pp --> ppηnear threshold
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• Production of charmed baryon ${\Lambda }_c(2940{)}^{+}$ at PANDA
• The role of $N^{\ast }(1535)$ in ${\eta }^{\prime }$ production
• Near-threshold $\omega$ and $\varphi$ meson productions in $pp$ collisions
• Phenomenology of pp->pp eta reaction close to threshold
• Reply to Comment on "Mass and K-Lambda Coupling of the N*(1535)"
• Proposal for Studying $N^{\ast }$ Resonances with $\bar{p}p\to \bar{p}n{\pi }^{+}$ Reaction
• Evidence for a backward peak in the gamma+d->pi^0+d cross section near the eta threshold
• Production of charmed baryon ${\Lambda }_c(2940)$ by kaon-induced reaction on a proton target
• Final state interaction in the reaction NN -> eta NN
• Phenomenological study on the $\bar{p}N\to \bar{N}N\pi \pi$ reactions
• Role of the N*(1440) resonance in the pp->pnpi+ reaction
• Eta and eta' mesons production at COSY-11
• Production of the $D_{s0}(2317)$ and $D_{s1}(2460)$ by kaon-induced reactions on a proton target
• Relativistic description of the np to eta d reaction near threshold
• First estimate of producing the charmed baryon ${\Lambda }_c(2880)$ at PANDA
• Contribution of the t-channel $N^{\ast }(1535)$ exchange for the $p\bar{p}\to \varphi \varphi$ reaction
• Hadronic interaction of the eta meson with two nucleons
• Near-threshold $\eta$ production in $pp$ collisions
• The detailed mechanism of the eta production in pp scattering up to the Tlab = 4.5 GeV
• Spin and Isospin Effects in the NN -> NK Lambda Reaction Near Threshold
• Production of charmed baryon ${\Lambda }_c(2860)$ via low energy antiproton-proton interaction
• Role of the low-lying nucleon resonances in the $p\bar{p}\to \psi \eta$ reaction
• Studying ${\Lambda }^{\ast }$ resonances in the $p\bar{p}\to \Lambda \bar{\Lambda }\eta$ reaction
• Hadronic production of eta--mesons: recent results and open questions