${{\boldsymbol \chi}_{{c2}}{(1P)}}$ MASS INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 3556.17 \pm0.07}$ OUR AVERAGE
$3557.3$ $\pm1.7$ $\pm0.7$ 611 1
AAIJ
2017BB
LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit X}}$ $\rightarrow$ 2( ${{\mathit K}^{+}}{{\mathit K}^{-}}$) ${{\mathit X}}$
$3556.10$ $\pm0.06$ $\pm0.11$ 4.0k 2
AAIJ
2017BI
LHCB ${{\mathit \chi}_{{c2}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$3555.3$ $\pm0.6$ $\pm2.2$ 2.5k
UEHARA
2008
BELL ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ hadrons
$3555.70$ $\pm0.59$ $\pm0.39$
ABLIKIM
2005G
BES2 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{c2}}}$
$3556.173$ $\pm0.123$ $\pm0.020$
ANDREOTTI
2005A
E835 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$
$3559.9$ $\pm2.9$
EISENSTEIN
2001
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \chi}_{{{c2}}}}$
$3556.4$ $\pm0.7$
BAI
1999B
BES ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$3556.22$ $\pm0.131$ $\pm0.020$ 585 3
ARMSTRONG
1992
E760 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$
$3556.9$ $\pm0.4$ $\pm0.5$ 50
BAGLIN
1986B
SPEC ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ X
$3557.8$ $\pm0.2$ $\pm4$ 4
GAISER
1986
CBAL ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$3553.4$ $\pm2.2$ 66 5
LEMOIGNE
1982
GOLI 185 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Be}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{}^{}\mathrm {A}$
$3555.9$ $\pm0.7$ , 6
OREGLIA
1982
CBAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3557$ $\pm1.5$ 69 7
HIMEL
1980
MRK2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3551$ $\pm11$ 15
BRANDELIK
1979B
DASP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3553$ $\pm4$ 7
BARTEL
1978B
CNTR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3553$ $\pm4$ $\pm4$ 7, 8
TANENBAUM
1978
MRK1 ${{\mathit e}^{+}}{{\mathit e}^{-}}$
$3563$ $\pm7$ 360 7
BIDDICK
1977
CNTR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
• • • We do not use the following data for averages, fits, limits, etc. • • •
$3555.4$ $\pm1.3$ 53
UEHARA
2013
BELL ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$3543$ $\pm10$ 4
WHITAKER
1976
MRK1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
1  From a fit of the ${{\mathit \phi}}{{\mathit \phi}}$ invariant mass with the width of ${{\mathit \chi}_{{c2}}{(1P)}}$ fixed to the PDG 2016 value.
2  AAIJ 2017BI reports also m(${{\mathit \chi}_{{c2}}}$) $−$ m(${{\mathit \chi}_{{c1}}}$) = $45.39$ $\pm0.07$ $\pm0.03$ MeV.
3  Recalculated by ANDREOTTI 2005A, using the value of ${{\mathit \psi}{(2S)}}$ mass from AULCHENKO 2003 .
4  Using mass of ${{\mathit \psi}{(2S)}}$ = 3686.0 MeV.
5  ${{\mathit J / \psi}{(1S)}}$ mass constrained to 3097 MeV.
6  Assuming ${{\mathit \psi}{(2S)}}$ mass = 3686 MeV and ${{\mathit J / \psi}{(1S)}}$ mass = 3097 MeV.
7  Mass value shifted by us by amount appropriate for ${{\mathit \psi}{(2S)}}$ mass = 3686 MeV and ${{\mathit J / \psi}{(1S)}}$ mass = 3097 MeV.
8  From a simultaneous fit to radiative and hadronic decay channels.
  References:
AAIJ 2017BI
PRL 119 221801 ${{\mathit \chi}_{{c1}}}$ and ${{\mathit \chi}_{{c2}}}$ Resonance Parameters with the Decays ${{\mathit \chi}_{{{c1,c2}}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
AAIJ 2017BB
EPJ C77 609 Study of Charmonium Production in hadron Decays and First Evidence for the Decay ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \phi}}{{\mathit \phi}}$
UEHARA 2013
PTEP 2013 123C01 High-Statistics Study of ${{\mathit K}_S^0}$ Pair Production in Two-Photon Collisions
UEHARA 2008
EPJ C53 1 Study of Charmonia in Four-Meson Final States Produced in Two-Photon Collisions
ABLIKIM 2005G
PR D71 092002 Precise Measurement of Spin-Averaged ${{\mathit \chi}_{{cJ}}{(1P)}}$ Mass using Photon Conversions in ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{cJ}}}$
ANDREOTTI 2005A
NP B717 34 Measurement of the Resonance Parameters of the ${{\mathit \chi}_{{1}}}(1{}^{3}P_{1}$) and ${{\mathit \chi}_{{2}}}(1{}^{3}P_{2}$) States of Charmonium Formed in Antiproton-Proton Annihilations
EISENSTEIN 2001
PRL 87 061801 Experimental Investigation of the Two Photon Widths of the ${{\mathit \chi}_{{c0}}}$ and the ${{\mathit \chi}_{{c2}}}$ Mesons
BAI 1999B
PR D60 072001 Study of the Hadronic Decays of ${{\mathit \chi}_{{c}}}$ States
ARMSTRONG 1992
NP B373 35 Study of the ${{\mathit \chi}_{{1}}}$ and ${{\mathit \chi}_{{2}}}$ Charmonium States Formed in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilations
BAGLIN 1986B
PL B172 455 Formation of the ${{\mathit \chi}_{{1}}}$ and ${{\mathit \chi}_{{2}}}$ Charmonium Resonances in Antiproton Proton Annihilation and Measurement of their Masses and Total Width
GAISER 1986
PR D34 711 Charmonium Spectroscopy from Inclusive ${{\mathit \psi}^{\,'}}$ and ${{\mathit J / \psi}}$ Radiative Decays
LEMOIGNE 1982
PL 113B 509 Measurement of Hadronic Production of the ${{\mathit \chi}_{{1}}{(3507)}^{++}}$ and ${{\mathit \chi}_{{2}}{(3553)}^{++}}$ through Their Radiative Decay to ${{\mathit J / \psi}}$
OREGLIA 1982
PR D25 2259 Study of the Reaction ${{\mathit \psi}^{\,'}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit J / \psi}}$
HIMEL 1980
PRL 44 920 Measurement of ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \psi}}$ Final States in ${{\mathit \psi}^{\,'}}$ Decay
BRANDELIK 1979B
NP B160 426 Experimental Results on the Decay Sequences ${{\mathit \psi}^{\,'}{(3685)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit P}_{{c}}}$ /${{\mathit \chi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit J / \psi}}$ , ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$, ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ and the Decays ${{\mathit \psi}^{\,'}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit J / \psi}}$ , ${{\mathit \pi}^{0}}{{\mathit J / \psi}}$
BARTEL 1978B
PL 79B 492 Cascade Radiative Decays of ${{\mathit \psi}^{\,'}{(3684)}}$ and Evidence for a New Intermediate State of Even $\mathit C$ Parity
TANENBAUM 1978
PR D17 1731 Radiative Decays of the ${{\mathit \psi}^{\,'}{(3684)}}$ into High Mass States
BIDDICK 1977
PRL 38 1324 Inclusive ${{\mathit \gamma}}$-ray Spectra from ${{\mathit \psi}{(3095)}}$ and ${{\mathit \psi}^{\,'}{(3684)}}$
WHITAKER 1976
PRL 37 1596 Radiative Decays of ${{\mathit \psi}{(3095)}}$ and ${{\mathit \psi}^{\,'}{(3684)}}$