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${{\mathit X}{(4160)}}$ WIDTH

INSPIRE   PDGID:

M190W

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 136 {}^{+60}_{-35}}$ OUR AVERAGE $135$ $\pm28$ ${}^{+59}_{-30}$ 24k 1 AAIJ 2021 E LHCB ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ $139$ ${}^{+111}_{-61}$ $\pm21$ 24 PAKHLOV 2008 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit X}}$ 1  From an amplitude analysis of the decay ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ with a significance of 4.8 $\sigma $.

References:

AAIJ 2021E PRL 127 082001 Observation of New Resonances Decaying to $J/\psi K^+$+ and $J/\psi \phi$ PAKHLOV 2008 PRL 100 202001 Production of New Charmoniumlike States in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit D}^{(*)}}{{\overline{\mathit D}}^{(*)}}$ at $\sqrt {s }$ $\simeq{}$ 10.6 GeV