학술논문
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.
Document Type
article
Author
Aubert, B; Barate, R; Bona, M; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, JP; Poireau, V; Tisserand, V; Zghiche, A; Grauges, E; Palano, A; Chen, JC; Qi, ND; Rong, G; Wang, P; Zhu, YS; Eigen, G; Ofte, I; Stugu, B; Abrams, GS; Battaglia, M; Brown, DN; Button-Shafer, J; Cahn, RN; Charles, E; Gill, MS; Groysman, Y; Jacobsen, RG; Kadyk, JA; Kerth, LT; Kolomensky, Yu G; Kukartsev, G; Lynch, G; Mir, LM; Orimoto, TJ; Pripstein, M; Roe, NA; Ronan, MT; Wenzel, WA; del Amo Sanchez, P; Barrett, M; Ford, KE; Harrison, TJ; Hart, AJ; Hawkes, CM; Morgan, SE; Watson, AT; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Peters, K; Schroeder, T; Steinke, M; Boyd, JT; Burke, JP; Cottingham, WN; Walker, D; Cuhadar-Donszelmann, T; Fulsom, BG; Hearty, C; Knecht, NS; Mattison, TS; McKenna, JA; Khan, A; Kyberd, P; Saleem, M; Sherwood, DJ; Teodorescu, L; Blinov, VE; Bukin, AD; Druzhinin, VP; Golubev, VB; Onuchin, AP; Serednyakov, SI; Skovpen, Yu I; Solodov, EP; Todyshev, K Yu; Best, DS; Bondioli, M; Bruinsma, M; Chao, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, AJ; Lund, P; Mandelkern, M; Mommsen, RK; Roethel, W; Stoker, DP; Abachi, S; Buchanan, C; Foulkes, SD; Gary, JW; Long, O; Shen, BC; Wang, K; Zhang, L
Source
Physical review letters. 98(21)
Subject
Language
Abstract
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.