Evidence of a broad structure at an invariant mass of 4.32 GeV/c2 in the reaction e+ e- -> pi+ pi- Psi(2S) measured at BABAR
Autor: | Bomben, Marco, Bosisio, Luciano, Cartaro, Concetta, Cossutti, F., DELLA RICCA, Giuseppe, Dittongo, Selenia, Lanceri, Livio, Vitale, Lorenzo |
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Přispěvatelé: | Bomben, Marco, Bosisio, Luciano, Cartaro, Concetta, Cossutti, F., DELLA RICCA, Giuseppe, Dittongo, Selenia, Lanceri, Livio, Vitale, Lorenzo |
Jazyk: | angličtina |
Rok vydání: | 2007 |
Předmět: | |
Popis: | We present a measurement of the cross section of the process e+e-→π+π-ψ(2S) from threshold up to 8 GeV center-of-mass energy using events containing initial-state radiation, produced at the SLAC PEP-II e+e- storage rings. The study is based on 298 fb-1 of data recorded with the BABAR detector. A structure is observed in the cross section not far above threshold, near 4.32 GeV. We also investigate the compatibility of this structure with the Y(4260) previously reported by this experiment. |
Databáze: | OpenAIRE |
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