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${\mathit {\mathit c}}$ ${\mathit {\overline{\mathit c}}}$ MESONS
(including possibly non- ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ states)

INSPIRE JSON (beta) PDGID:

M057

${{\mathit \chi}_{{c2}}{(1P)}}$

$I^G(J^{PC})$ = $0^+(2^{+ +})$

See the Review on ``${{\mathit \psi}{(2S)}}$ and ${{\mathit \chi}_{{c}}}$ branching ratios'' before the ${{\mathit \chi}_{{c0}}{(1P)}}$ Listings.

${{\mathit \chi}_{{c2}}{(1P)}}$ MASS

$3556.17 \pm0.07$ MeV

${{\mathit \chi}_{{c2}}{(1P)}}$ WIDTH

$1.97 \pm0.09$ MeV

▸	MULTIPOLE AMPLITUDES IN ${{\mathit \chi}_{{c2}}{(1P)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit J / \psi}{(1S)}}$ RADIATIVE DECAY

▸	MULTIPOLE AMPLITUDES IN ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{c2}}{(1P)}}$ RADIATIVE DECAY

MULTIPOLE AMPLITUDE RATIOS IN RADIATIVE DECAYS ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{c2}}{(1P)}}$ and ${{\mathit \chi}_{{c2}}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit J / \psi}{(1S)}}$

$\mathit b_{2}/\mathit a_{2}$ Magnetic quadrupole transition amplitude ratio

$-0.11 \pm0.15$

${{\mathit \chi}_{{c2}}{(1P)}}$ DECAY MODES ▸ Expand all decays

▸	Hadronic decays

▸	Radiative decays

FOOTNOTES

Constrained Fit information

Except where otherwise noted, content of the 2023 Review of Particle Physics is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy), JPS and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2023. See LBNL disclaimers.

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${{\mathit \chi}_{{c2}}{(1P)}}$