${{\mathit \chi}_{{{c0}}}{(1P)}}$ MASS

INSPIRE   PDGID:
M056M
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 3414.71 \pm0.30}$ OUR AVERAGE
$3413.0$ $\pm1.9$ $\pm0.6$ 933 1
AAIJ
2017BB
 LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit X}}$ $\rightarrow$ 2( ${{\mathit K}^{+}}{{\mathit K}^{-}}$) ${{\mathit X}}$
$3414.2$ $\pm0.5$ $\pm2.3$ 5.4k
UEHARA
2008
BELL ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \chi}_{{{c0}}}}$ $\rightarrow$ hadrons
$3406$ $\pm7$ $\pm6$ 230 2
ABE
2007
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$( ${{\mathit c}}{{\overline{\mathit c}}}$)
$3414.21$ $\pm0.39$ $\pm0.27$
ABLIKIM
2005G
 BES2 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{{c0}}}}$
$3414.7$ ${}^{+0.7}_{-0.6}$ $\pm0.2$ 3
ANDREOTTI
2003
E835 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \chi}_{{{c0}}}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$3415.5$ $\pm0.4$ $\pm0.4$ 392 4
BAGNASCO
2002
E835 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \chi}_{{{c0}}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \gamma}}$
$3417.4$ ${}^{+1.8}_{-1.9}$ $\pm0.2$ 3
AMBROGIANI
1999B
 E835 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$
$3414.1$ $\pm0.6$ $\pm0.8$
BAI
1999B
 BES ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$3417.8$ $\pm0.4$ $\pm4$ 3
GAISER
1986
CBAL ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$3416$ $\pm3$ $\pm4$ 5
TANENBAUM
1978
MRK1 ${{\mathit e}^{+}}{{\mathit e}^{-}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$3414.6$ $\pm1.1$ 266
UEHARA
2013
BELL ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$3416.5$ $\pm3.0$
EISENSTEIN
2001
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \chi}_{{{{c0}}}}}$
$3422$ $\pm10$ 5
BARTEL
1978B
 CNTR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3415$ $\pm9$ 5
BIDDICK
1977
CNTR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
1  From a fit of the ${{\mathit \phi}}{{\mathit \phi}}$ invariant mass with the width of ${{\mathit \chi}_{{{c0}}}{(1P)}}$ fixed to the PDG 2016 value.
2  From a fit of the ${{\mathit J / \psi}}$ recoil mass spectrum. Supersedes ABE,K 2002 and ABE 2004G.
3  Using mass of ${{\mathit \psi}{(2S)}}$ = 3686.0 MeV.
4  Recalculated by ANDREOTTI 2005A, using the value of ${{\mathit \psi}{(2S)}}$ mass from AULCHENKO 2003.
5  Mass value shifted by us by amount appropriate for ${{\mathit \psi}{(2S)}}$ mass = 3686 MeV and ${{\mathit J / \psi}{(1S)}}$ mass = 3097 MeV.
References