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${{\mathit \rho}{(1700)}}$ MASS

${{\mathit \eta}}{{\mathit \rho}^{0}}$ MODE

INSPIRE   PDGID:

M065M6

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $1834$ $\pm12$ 13.4k 1 GRIBANOV 2020 CMD3 $1.1 - 2.0$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $1840$ $\pm10$ 7.4k 2 ACHASOV 2018 SND $1.22 - 2.00$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $1740$ $\pm20$ ANTONELLI 1988 DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $1701$ $\pm15$ 3 FUKUI 1988 SPEC 8.95 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ 1  Mass and width of the ${{\mathit \rho}{(770)}}$ fixed at 775 and 149 MeV, respectively; solution 2 of model 2, ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ decays used. 2  From the combined fit of AULCHENKO 2015 and ACHASOV 2018 in the model with the interfering ${{\mathit \rho}{(1450)}}$, ${{\mathit \rho}{(1700)}}$ and ${{\mathit \rho}{(2150)}}$ with the parameters of the ${{\mathit \rho}{(1450)}}$ and ${{\mathit \rho}{(1700)}}$ floating and the mass and width of the ${{\mathit \rho}{(2150)}}$ fixed at 2155 MeV and 320 MeV, respectively. The phases of the resonances are $\pi $, 0 and $\pi $, respectively. 3  Assuming ${{\mathit \rho}^{+}}{{\mathit f}_{{0}}{(1370)}}$ decay mode interferes with ${{\mathit a}_{{1}}{(1260)}^{+}}{{\mathit \pi}}$ background. From a two Breit-Wigner fit.

References:

GRIBANOV 2020 JHEP 2001 112 Measurement of the $e^{+}e^{-}\rightarrow\eta\pi^{+}\pi^{-}$ cross section with the CMD-3 detector at the VEPP-2000 collider ACHASOV 2018 PR D97 012008 Measurement of the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Cross Section with the SND Detector at the VEPP-2000 Collider ANTONELLI 1988 PL B212 133 Measurement of the Reaction ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ in the Center of Mass Energy Interval 1350-2400 MeV 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 ${\mathrm {GeV/}}\mathit c$

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