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
Přispěvatelé:	Bomben, Marco, Bosisio, Luciano, Cartaro, Concetta, Cossutti, F., DELLA RICCA, Giuseppe, Dittongo, Selenia, Lanceri, Livio, Vitale, Lorenzo
Jazyk:	angličtina
Rok vydání:	2007
Předmět:	BABAR PEP2 PARTICLE PHYSICS
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
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::549310eb0bf4d6700e2ddabaa7a14acd https://hdl.handle.net/11368/2496143 Zobrazit plný text záznamu