# $\mathbf {{{\boldsymbol X}{(2340)}}}$ $\boldsymbol I\boldsymbol G(\boldsymbol J{}^{PC}) = ?{}^{?}(?{}^{??})$ INSPIRE search

MASS ${\mathrm {(MeV)}}$ WIDTH ${\mathrm {(MeV)}}$ EVTS DOCUMENT ID TECN  COMMENT
$2340 \pm20$ $180 \pm60$ 126 1
 1975
HBC 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$5 ${{\mathit \pi}}$
1  Dominant decay into ${{\mathit \rho}^{0}}{{\mathit \rho}^{0}}{{\mathit \pi}^{+}}$ . BALTAY 1978 finds confirmation in 2 ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$2 ${{\mathit \pi}^{0}}$ events which contain ${{\mathit \rho}^{+}}{{\mathit \rho}^{0}}{{\mathit \pi}^{0}}$ and 2 ${{\mathit \rho}^{+}}{{\mathit \pi}^{-}}$ .
References:
 BALTAY 1975
PRL 35 891 Evidence for a New Meson Resonance at 2340 MeV
 BALTAY 1978
PR D17 52 A Search for the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit n}}$ near Threshold