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${{\mathit \rho}{(2150)}}$ WIDTH

${{\mathit e}^{+}}{{\mathit e}^{-}}$ PRODUCED

INSPIRE   PDGID:

M032W3

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $234$ $\pm30$ $\pm25$ 1 ABLIKIM 2021 A BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{0}}$ $135$ $\pm34$ $\pm30$ 2 ABLIKIM 2021 X BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $460$ ${}^{+54}_{-48}$ ${}^{+160}_{-90}$ 1.8k 3 ABLIKIM 2020 F BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ $70$ $\pm38$ 4 LEES 2020 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \gamma}}$ $127$ $\pm14$ $\pm4$ 5 LEES 2020 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $196$ $\pm23$ ${}^{+25}_{-27}$ 6 ABLIKIM 2019 AQ BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $139.8$ $\pm12.3$ $\pm20.6$ 7 ABLIKIM 2019 L BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $109$ $\pm76$ 8 LEES 2012 G BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $350$ $\pm40$ $\pm50$ AUBERT 2007 AU BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit f}_{{1}}{(1285)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $310$ $\pm140$ AUBERT 2007 AU BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $389$ $\pm79$ BIAGINI 1991 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $410$ $\pm100$ 9 CLEGG 1990 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ 3( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) , 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$) 1  From a fit to the cross section between 2.00 and 3.08 GeV with a coherent sum of Breit-Wigner amplitudes, including contributions from ${{\mathit \rho}{(770)}}$, ${{\mathit \rho}{(1450)}}$ and ${{\mathit \rho}{(1700)}}$. Could be another state. 2  From a Breit-Wigner fit to the Born cross section, including an $\mathit s$-dependent continuum amplitude. 3  Seen in ${{\mathit \psi}{(2S)}}$ decay with branching ratio ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit X}}{{\mathit \eta}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ = ($21.7$ $\pm1.9$ ${}^{+7.7}_{-8.3}$) $ \times 10^{-6}$. 4  From the fit to the BABAR data of LEES 2013Q assuming a coherent sum of a single Breit-Wigner resonance and a nonresonant contribution. The resonance significance is 3.5 ${{\mathit \sigma}}$. 5  From the fit to the BABAR data of LEES 2013Q and BESIII data of ABLIKIM 2019L assuming a coherent sum of a single Breit-Wigner resonance and a nonresonant contribution. 6  Could also be another state. Seen in ${{\mathit J / \psi}}$ decay with branching ratio ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit X}}{{\mathit \pi}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ = ($6.7$ $\pm1.1$ ${}^{+2.2}_{-1.8}$) $ \times 10^{-6}$. 7  The observed structure can be due to both the ${{\mathit \phi}{(2170)}}$ and ${{\mathit \rho}{(2150)}}$. 8  Using the GOUNARIS 1968 parametrization of the pion form factor leaving the masses and widths of the ${{\mathit \rho}{(1450)}}$, ${{\mathit \rho}{(1700)}}$, and ${{\mathit \rho}{(2150)}}$ resonances as free parameters of the fit. 9  Includes ATKINSON 1985 .

References:

ABLIKIM 2021X PR D103 072007 Measurement of the Born cross sections for $e^+e^- \to \eta^\prime \pi^{+}\pi^{-}$ at center-of-mass energies between $2.00$ and $3.08$~GeV ABLIKIM 2021A PL B813 136059 Observation of a resonant structure in $e^{+}e^{-} \to \omega\eta$ and another in $e^{+}e^{-} \to \omega\pi^{0}$ at center-of-mass energies between 2.00 and 3.08 GeV ABLIKIM 2020F PR D101 032008 Partial wave analysis of $\psi(3686)\to K^{+}K^{-}\eta$ LEES 2020 PR D101 012011 Resonances in $e^+e^-$ annihilation near 2.2 GeV ABLIKIM 2019AQ PR D100 032004 Partial-wave analysis of $J/\psi\to K^+K^-\pi^0$ ABLIKIM 2019L PR D99 032001 Measurement of $e^{+} e^{-} \rightarrow K^{+} K^{-}$ cross section at $\sqrt{s} = 2.00 - 3.08$ GeV LEES 2012G PR D86 032013 Precise Measurement of the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$( ${{\mathit \gamma}}$) Cross Section with the Initial-State Radiation Method at BABAR AUBERT 2007AU PR D76 092005 The ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \pi}^{0}}$ , 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \eta}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ and ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}}$ Cross Sections Measured with Initial-State Radiation Also PR D77 119902E (errat.) Erratum: The ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \pi}^{0}}$ , 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \eta}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ and ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}}$ Cross Sections Measured with Initial-State Radiation [Phys. Rev. D 76, 092005 (2007)] BIAGINI 1991 NC 104A 363 Phenomenological Evidence for a Third Radial Excitation of ${{\mathit \rho}{(770)}}$ CLEGG 1990 ZPHY C45 677 ${{\mathit \rho}^{\,'}}$'s in 6${{\mathit \pi}}$ States from Materialization of Photons

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