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Evidence for resonant structure near 1780 MeV in e+ e? annihilations observed with the new colliding beam ring at Orsay |
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| Authors: | G Cosme B Dudelzak B Grelaud B Jean-Marie S Jullian D Lalanne F Laplanche V Lepeltier G Parrour C Paulot S Protopopescu R Riskalla Ph Roy G Szklarz |
| Institution: | Université Paris-Sud, Centre d''Orsay, Laboratoire de l''Accélérateur Linéaire, 91405 Orsay, France |
| Abstract: | We present evidence for the existence of a new JPC = 1?? resonance with a mass of 1778 ± 14 (±12) MeV and 150 ± 40 (±30) MeV wide. We tentatively conclude that it is an I = 0 state. |
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