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${{\mathit T}_{{{c {{\overline{\mathit c}}} 1}}}{(3900)}}$ MASS

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M210M

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $\bf{ 3887.1 \pm2.6}$ OUR AVERAGE  Error includes scale factor of 1.7.  See the ideogram below. $3893.1$ $\pm2.2$ $\pm3.0$ 1 ABLIKIM 2020 N BES3 0 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit J / \psi}}$ $3902.6$ ${}^{+5.2}_{-5.0}$ ${}^{+3.3}_{-1.4}$ 2, 3 ABAZOV 2019 D0 $\pm{}$ 1.96 TeV ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit X}}$ $3881.2$ $\pm4.2$ $\pm52.7$ 6k 4 ABLIKIM 2017 J BES3 $\pm{}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ $3885.7$ ${}^{+4.3}_{-5.7}$ $\pm8.4$ 2, 4 ABLIKIM 2015 AB BES3 0 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}$( ${{\mathit D}}{{\overline{\mathit D}}^{*}}$) ${}^{0}$ $3881.7$ $\pm1.6$ $\pm1.6$ 1.2k 2, 4 ABLIKIM 2015 AC BES3 $\pm{}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}$( ${{\mathit D}}{{\overline{\mathit D}}^{*}}$) ${}^{-+}$ $3883.9$ $\pm1.5$ $\pm4.2$ 1.2k 2, 4 ABLIKIM 2014 A BES3 $\pm{}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}$ (${{\mathit D}}{{\overline{\mathit D}}^{*}}){}^{-+}$ $3894.5$ $\pm6.6$ $\pm4.5$ 159 2 LIU 2013 B BELL $\pm{}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ $3886$ $\pm4$ $\pm2$ 81 2, 5 XIAO 2013 A $\pm{}$ 4.17 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ $3904$ $\pm9$ $\pm5$ 25 2, 5 XIAO 2013 A 0 4.17 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit J / \psi}}$ • • We do not use the following data for averages, fits, limits, etc. • • $3895.0$ $\pm5.2$ ${}^{+4.0}_{-2.7}$ 502 2, 6 ABAZOV 2018 B D0 $\pm{}$ 1.96 TeV ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit X}}$ $3894.8$ $\pm2.3$ $\pm3.2$ 356 2, 7 ABLIKIM 2015 U BES3 0 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit J / \psi}}$ $3899.0$ $\pm3.6$ $\pm4.9$ 307 2, 8 ABLIKIM 2013 T BES3 $\pm{}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ 1  Pole mass obtained from a fit to a relativistic Breit-Wigner. 2  Neglecting interference between the ${{\mathit T}_{{{c {{\overline{\mathit c}}} 1}}}{(3900)}}$ and other processes. 3  Measured in weak decays of ${{\mathit b}}$-flavored hadrons (nonprompt). 4  Pole mass obtained from a fit to a Flatte-like formula. 5  For $\mathit M{}^{2}({{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) $<$ 0.65 GeV${}^{2}$. Obtained by analyzing CLEO-c data but not authored by the CLEO Collaboration. 6  The signal of the ${{\mathit T}_{{{c {{\overline{\mathit c}}} 1}}}{(3900)}}$ is correlated with a parent ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ system in the invariant mass range $4.2 - 4.7$ GeV. Superseded by ABAZOV 2019. 7  Superseded by ABLIKIM 2020N. 8  Superseded by ABLIKIM 2017J.

${{\mathit T}_{{{c {{\overline{\mathit c}}} 1}}}{(3900)}}$ MASS (MeV)

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