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. © 2007 The American Physical Society.

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), 1-7 [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

PATRIGNANI, CLAUDIA;
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. © 2007 The American Physical Society.
2007
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), 1-7 [10.1103/PhysRevLett.98.212001].
Aubert, B; Barate, R.; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/550667
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