${\mathit {\mathit c}}$ ${\mathit {\overline{\mathit c}}}$ MESONS
(including possibly non-${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ states)
INSPIRE   JSON PDGID:
M261

${{\mathit \chi}_{{{c1}}}{(4685)}}$

$I^G(J^{PC})$ = $0^+(1^{+ +})$ 
This state shows properties different from a conventional ${{\mathit q}}{{\overline{\mathit q}}}$ state. A candidate for an exotic structure. See the review on "Heavy Non-${{\mathit q}}{{\overline{\mathit q}}}$ Mesons." Seen by AAIJ 2021E in ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit \chi}_{{{c1}}}{(4685)}}{{\mathit K}^{+}}$ with ${{\mathit \chi}_{{{c1}}}{(4685)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ using an amplitude analysis of ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ with a significance (accounting for systematic uncertainties) of 15 $\sigma $. The $\mathit J{}^{P} = 1{}^{+}$ assignment is favored with high significance.
${{\mathit \chi}_{{{c1}}}{(4685)}}$ MASS $4684^{+15}_{-17}$ MeV 
 
${{\mathit \chi}_{{{c1}}}{(4685)}}$ WIDTH $130$ $\pm40$ MeV 
 
Mode  
Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{1}$ ${{\mathit J / \psi}}{{\mathit \phi}}$ seen 1002