Evidence of a broad structure at an invariant mass of 4.32 GeV/c2 in the reaction e+e-→π+π-ψ(2S) measured at BABAR
(2007) Evidence of a broad structure at an invariant mass of 4.32 GeV/c2 in the reaction e+e-→π+π-ψ(2S) measured at BABAR. Physical Review Letters, Vol.98 (No.21). Article: 212001. ISSN 0031-9007 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevLett.98.212001
We present a measurement of the cross section of the process e(+)e(-)->pi(+)pi(-)psi(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.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Physical Review Letters|
|Publisher:||American Physical Society|
|Official Date:||25 May 2007|
|Number of Pages:||7|
|Page Range:||Article: 212001|
|Access rights to Published version:||Restricted or Subscription Access|
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