7$-$12 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$ MM
1
Seen in 2.5$-$3 ${\mathrm {GeV/}}\mathit c$ ${{\overline{\mathit p}}}{{\mathit p}}$ . 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$ , with 0, 1, 2 ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ pairs in ${{\mathit \rho}}$ band not seen by OREN 1974 (2.3 ${\mathrm {GeV/}}\mathit c$ ${{\overline{\mathit p}}}{{\mathit p}}$ ) with more statistics. (Jan. 1976)
Natural Parity Resonances in ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
FUKUI
1988
PL B202 441
Vector Resonances Around 1.6 GeV of the ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ System in the ${{\mathit \pi}^{-}}{{\mathit p}}$ Charge Exchange Reaction at 8.95 ${\mathrm {GeV/}}\mathit c$
ANDERSON
1969
PRL 22 1390
Observations of ${{\mathit A}_{{1}}^{-}}$, ${{\mathit A}_{{2}}^{-}}$ and Higher Mass Bosons Produced near 180$^\circ{}$ in ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$ (Missing Mass)${}^{-}$ at 16 ${\mathrm {GeV/}}\mathit c$
FOCACCI
1966
PRL 17 890
Mass Spectrum of Bosons from 500 to 2500 MeV in the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit X}}$ Observed by a Missing Mass Spectrometer