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${{\mathit \rho}_{{3}}{(1690)}}$ WIDTH

${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ MODE

INSPIRE   PDGID:

M015W6

(For difficulties with MMS experiments, see the ${{\mathit a}_{{2}}{(1320)}}$ mini-review in the 1973 edition.)

VALUE (MeV) DOCUMENT ID TECN CHG  COMMENT $\bf{ 126 \pm40}$ OUR AVERAGE  Error includes scale factor of 1.8. $220$ $\pm30$ $\pm50$ AMELIN 2000 VES 37 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ $106$ $\pm27$ FUKUI 1988 SPEC 0 8.95 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ • • We do not use the following data for averages, fits, limits, etc. • • $195$ 1 ANDERSON 1969 MMS - 16 ${{\mathit \pi}^{-}}{{\mathit p}}$ backward $<21$ 2, 1 FOCACCI 1966 MMS - 7$-$12 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$ MM $<30$ 2, 1 FOCACCI 1966 MMS - 7$-$12 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$ MM $<38$ 2, 1 FOCACCI 1966 MMS - 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 ${{\mathit \rho}^{0}}$ band not seen by OREN 1974 (2.3 ${\mathrm {GeV/}}\mathit c$ ${{\overline{\mathit p}}}{{\mathit p}}$ ) with more statistics. (Jan. 1979) 2  Not seen by BOWEN 1972 .

References:

AMELIN 2000 NP A668 83 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

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