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${{\mathit J / \psi}{(1S)}}$ MASS
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$3096.900 \pm0.006$ MeV
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${{\mathit J / \psi}{(1S)}}$ WIDTH
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$92.6 \pm1.7$ keV (S = 1.1)
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| Mode |
Fraction ($\Gamma_i$ / $\Gamma$) |
Scale Factor/
Conf. Level |
P (MeV/c) |
| $\Gamma_{1}$ | hadrons | |
$(87.7\pm{0.5})\%$
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| | $\Gamma_{2}$ | virtual ${{\mathit \gamma}}$ $\rightarrow$ hadrons | |
$(13.46\pm{0.07})\%$
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| | $\Gamma_{3}$ | ${{\mathit g}}{{\mathit g}}{{\mathit g}}$ | |
$(64.1\pm{1.0})\%$
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| | $\Gamma_{4}$ | ${{\mathit \gamma}}{{\mathit g}}{{\mathit g}}$ | |
$(8.8\pm{1.1})\%$
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| | $\Gamma_{5}$ | ${{\mathit e}^{+}}{{\mathit e}^{-}}$ | |
$(5.971\pm{0.032})\%$
| | 1548 |
| | $\Gamma_{6}$ | ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$ | [1] |
$(8.8\pm{1.4})\times 10^{-3}$
| | 1548 |
| | $\Gamma_{7}$ | ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ | |
$(5.961\pm{0.033})\%$
| | 1545 |
| | $\Gamma_{8}$ | ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ | |
$(5.5\pm{0.5})\times 10^{-5}$
| | 1548 |
| | $\Gamma_{9}$ | ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ | |
$(3.53\pm{0.26})\times 10^{-5}$
| | 1545 |
| | $\Gamma_{10}$ | ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ | |
$(1.11\pm{0.11})\times 10^{-6}$
| | 1530 |
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| ▸ | Decays involving hadronic resonances |
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| ▸ | Decays into stable hadrons |
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| ▸ | Charge conjugation ($\mathit C$), Parity ($\mathit P$), Lepton Family number ($\mathit LF$) violating modes |
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