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${{\mathit f}_{{0}}{(2020)}}$ T-MATRIX POLE $\sqrt {\mathit s }$

INSPIRE   PDGID:

M156PP

Note that $\Gamma \approx{}$2 Im($\sqrt {s }$).

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ (1870 - 2080) − {\mit i} (120 - 240)}$ OUR ESTIMATE $(2038 \pm48) − {\mit i} (156 \pm41)$ 1 RODAS 2022 RVUE ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ ( ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$ ) $(1925 \pm25) − {\mit i} (160 \pm18)$ SARANTSEV 2021 RVUE ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ ( ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$ , ${{\mathit \eta}}{{\mathit \eta}}$ , ${{\mathit \omega}}{{\mathit \phi}}$ ) $(1910 \pm50) − {\mit i} (199 \pm40)$ 2 ROPERTZ 2018 RVUE ${{\overline{\mathit B}}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}$( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $/$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$) $(1992 \pm16) − {\mit i} (221 \pm30)$ 3 BARBERIS 2000 C 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{f}}}$4 ${{\mathit \pi}}{{\mathit p}_{{s}}}$ $(2020 \pm35)−{\mit i}(205 \pm25)$ BARBERIS 1997 B OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}$2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) 1  T-matrix pole from coupled channel K-matrix fit to data on ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ (ABLIKIM 2015AE) and ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ (ABLIKIM 2018AA). 2  T-matrix pole of 3 channel unitary model fit to data from AAIJ 2014BR and AAIJ 2017V extracted using Pade approximants. 3  Average between ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$2 ${{\mathit \pi}^{0}}$ and 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ).

References:

RODAS 2022 EPJ C82 80 Scalar and tensor resonances in $J/\psi $ radiative decays SARANTSEV 2021 PL B816 136227 Scalar isoscalar mesons and the scalar glueball from radiative $J/\psi$ decays ROPERTZ 2018 EPJ C78 1000 A new parametrization for the scalar pion form factors BARBERIS 2000C PL B471 440 A Spin Analysis of the 4${{\mathit \pi}}$ Channels Produced in Central ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$ BARBERIS 1997B PL B413 217 A Study of the Centrally Produced ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Channel in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$