${{\mathit \chi}_{{{c1}}}{(1P)}}$ MASS INSPIRE search

M055M
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 3510.67 \pm0.05}$ OUR AVERAGE  Error includes scale factor of 1.2.
$3509.84$ $\pm0.69$ $\pm0.64$ 2.8k
AAIJ
2023AH
 LHCB ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}$( ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$)
$3508.4$ $\pm1.9$ $\pm0.7$ 460 1
AAIJ
2017BB
 LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit X}}$ $\rightarrow$ 2( ${{\mathit K}^{+}}{{\mathit K}^{-}}$) ${{\mathit X}}$
$3510.71$ $\pm0.04$ $\pm0.09$ 4.8k 2
AAIJ
2017BI
 LHCB ${{\mathit \chi}_{{{c1}}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$3510.30$ $\pm0.14$ $\pm0.16$
ABLIKIM
2005G
 BES2 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{{c1}}}}$
$3510.719$ $\pm0.051$ $\pm0.019$
ANDREOTTI
2005A
 E835 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$
$3509.4$ $\pm0.9$
BAI
1999B
 BES ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$3510.60$ $\pm0.087$ $\pm0.019$ 513 3
ARMSTRONG
1992
E760 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$
$3511.3$ $\pm0.4$ $\pm0.4$ 30
BAGLIN
1986B
 SPEC ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ X
$3512.3$ $\pm0.3$ $\pm4.0$ 4
GAISER
1986
CBAL ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$3507.4$ $\pm1.7$ 91 5
LEMOIGNE
1982
GOLI 185 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Be}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{}^{}\mathrm {A}$
$3510.4$ $\pm0.6$
OREGLIA
1982
CBAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3510.1$ $\pm1.1$ 254 6
HIMEL
1980
MRK2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3509$ $\pm11$ 21
BRANDELIK
1979B
 DASP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3507$ $\pm3$ 6
BARTEL
1978B
 CNTR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$2 ${{\mathit \gamma}}$
$3505.0$ $\pm4$ $\pm4$ 6, 7
TANENBAUM
1978
MRK1 ${{\mathit e}^{+}}{{\mathit e}^{-}}$
$3513$ $\pm7$ 367 6
BIDDICK
1977
CNTR ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
• • • We do not use the following data for averages, fits, limits, etc. • • •
$3500$ $\pm10$ 40
TANENBAUM
1975
MRK1 Hadrons ${{\mathit \gamma}}$
1  From a fit of the ${{\mathit \phi}}{{\mathit \phi}}$ invariant mass with the width of ${{\mathit \chi}_{{{c1}}}{(1P)}}$ 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  Mass value shifted by us by amount appropriate for ${{\mathit \psi}{(2S)}}$ mass = 3686 MeV and ${{\mathit J / \psi}{(1S)}}$ mass = 3097 MeV.
7  From a simultaneous fit to radiative and hadronic decay channels.
  References:
AAIJ 2023AH
PR D108 032010 Study of charmonium decays to $K^0_S K \pi$ in the $B \to (K^0_S K \pi) K$ channels
AAIJ 2017BB
EPJ C77 609 Study of Charmonium Production in hadron Decays and First Evidence for the Decay ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \phi}}{{\mathit \phi}}$
AAIJ 2017BI
PRL 119 221801 ${{\mathit \chi}_{{{c1}}}}$ and ${{\mathit \chi}_{{{c2}}}}$ Resonance Parameters with the Decays ${{\mathit \chi}_{{{{c1,c2}}}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
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
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
Also
PRL 68 1468 Precision Measurements of Charmonium States Formed in ${{\overline{\mathit p}}}$ ${{\mathit p}}$ Annihilation
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 ${{\mathit \psi}^{\,'}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit J / \psi}}$
Also
Private Comm. Private Communication
HIMEL 1980
PRL 44 920 Measurement of ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \psi}}$ Final States in ${{\mathit \psi}^{\,'}}$ Decay
Also
Private Comm. Private Communication
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
Also
Private Comm. Private Communication
BIDDICK 1977
PRL 38 1324 Inclusive ${{\mathit \gamma}}$-ray Spectra from ${{\mathit \psi}{(3095)}}$ and ${{\mathit \psi}^{\,'}{(3684)}}$
TANENBAUM 1975
PRL 35 1323 Observation of an Intermediate State in ${{\mathit \psi}^{\,'}{(3684)}}$ Radiative Cascade Decay