is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to

90 MeV / c^{2}

, depending on the fit hypothesis.

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This publication has 14 references indexed in Scilit:

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Observation of a Broad Structure in theπ+π−J/ψMass Spectrum around4.26 GeV/c2

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Observation of a Broad Structure in the $π^{+} π^{-} J / ψ$ Mass Spectrum around $4.26 GeV / c^{2}$