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 298fb-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.

Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., et al. (2007). Evidence of a broad structure at an invariant mass of 4.32GeV/c2 in the reaction e+e-→π+π-ψ(2S) measured at BABAR. PHYSICAL REVIEW LETTERS, 98(21) [10.1103/PhysRevLett.98.212001].

Evidence of a broad structure at an invariant mass of 4.32GeV/c2 in the reaction e+e-→π+π-ψ(2S) measured at BABAR

CARPINELLI, Massimo;
2007

Abstract

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 298fb-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.
Articolo in rivista - Articolo scientifico
Data recording; Radiation; Radiation detectors; Storage rings; BABAR detector; Broad structure; Center-of-mass energy; Germanium compounds;
English
2007
98
21
212001
none
Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., et al. (2007). Evidence of a broad structure at an invariant mass of 4.32GeV/c2 in the reaction e+e-→π+π-ψ(2S) measured at BABAR. PHYSICAL REVIEW LETTERS, 98(21) [10.1103/PhysRevLett.98.212001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389725
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