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${{\mathit X}{(4630)}}$ WIDTH

INSPIRE   PDGID:

M262W

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $174$ $\pm27$ ${}^{+134}_{-73}$ 24k 1 AAIJ 2021 E LHCB ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ 1  From an amplitude analysis of the decay ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ with a significance of 5.5 $\sigma $.

References:

AAIJ 2021E PRL 127 082001 Observation of New Resonances Decaying to $J/\psi K^+$+ and $J/\psi \phi$