Barberis, D.
Pion-Proton Scattering
[10.652]
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Inclusive production of eta mesons in pi p, K p and gamma p collisions at energies around 100-GeV.

The Omega Photon collaboration Apsimon, R.J. ; Atkinson, M. ; Baake, M. ; et al.
Z.Phys.C 54 (1992) 185-191, 1992.
Inspire Record 339919 DOI 10.17182/hepdata.14710

Measurements are reported of inclusive production of η-mesons in the beam fragmentation region in γp, πp andKp collisions. Results include a small but significant departure from VMD, and a pronounced rise in theη/π0 ratio with increasingpT.

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2.22-{GeV} $\eta \eta^\prime$ Structure Observed in 38-{GeV}/$c$ and 100-{GeV}/$c \pi^- p$ Collisions

The Serpukhov-Brussels-Los Alamos-Annecy(LAPP) collaboration Alde, D. ; Binon, F. ; Bricman, C. ; et al.
Phys.Lett.B 177 (1986) 120, 1986.
Inspire Record 230300 DOI 10.17182/hepdata.40940

A structure has been observed at 2220 MeV in the mass spectrum of ηη ′ systems produced by 38GeV/ c and 100 GeV/ c ′ negative pions on protons. The angular distribution of the decay products shows that this structure is presumably a spin J ⩾ 2 meson.

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