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${{\mathit h}_{{c}}{(1P)}}$ WIDTH

INSPIRE   PDGID:

M144W

VALUE (MeV) CL% EVTS DOCUMENT ID TECN  COMMENT $0.78$ ${}^{+0.27}_{-0.24}$ $\pm0.12$ 23k ABLIKIM 2022 AQ BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}$ hadrons; ${{\mathit \pi}^{0}}{{\mathit \gamma}}$( ${{\mathit \eta}_{{c}}}$) • • We do not use the following data for averages, fits, limits, etc. • • $0.70$ $\pm0.28$ $\pm0.22$ 832 1, 2 ABLIKIM 2012 N BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \gamma}}$ hadrons $\text{< 1.44}$ 90 3679 3 ABLIKIM 2010 B BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \gamma}}{{\mathit \eta}_{{c}}}$ $\text{< 1}$ 13 ANDREOTTI 2005 B E835 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}_{{c}}}{{\mathit \gamma}}$ $\text{< 1.1}$ 90 59 ARMSTRONG 1992 D E760 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{0}}$ 1  Superseded by ABLIKIM 2022AQ 2  With floating mass. 3  The central value is = $0.73$ $\pm0.45$ $\pm0.28$ MeV.

References:

ABLIKIM 2022AQ PR D106 072007 ABLIKIM 2012N PR D86 092009 Study of ${{\mathit \psi}{(3686)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit h}_{{c}}}$ , ${{\mathit h}_{{c}}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{c}}}$ via ${{\mathit \eta}_{{c}}}$ Exclusive Decays ABLIKIM 2010B PRL 104 132002 Measurements of ${{\mathit h}_{{c}}}({}^{1}\!{\mathit P}_{1}$) in ${{\mathit \psi}^{\,'}}$ Decays ANDREOTTI 2005B PR D72 032001 Results of a Search for the ${{\mathit h}_{{c}}}({}^{1}{{\mathit P}_{{1}}}$) State of Charmonium in the ${{\mathit \eta}_{{c}}}{{\mathit \gamma}}$ and ${{\mathit J / \psi}}{{\mathit \pi}^{0}}$ Decay Modes ARMSTRONG 1992D PRL 69 2337 Observation of the ${}^{1}\mathit P_{1}$ State of Charmonium