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We study the process $e^+e^-\to\psi(2S)\pi^{+}\pi^{-}$ withinitial-state-radiation events produced at the PEP-II asymmetric-energycollider. The data were recorded with the \BaBar detector at center-of-massenergies at and near the $\Upsilon(\mathrm{nS})$ (n = 2, 3, 4) resonances andcorrespond to an integrated luminosity of 520$fb^{-}$. We investigate the$\psi(2S)\pi^{+}\pi^{-}$ mass distribution from 3.95 to 5.95 $GeV/c^{2}$, andmeasure the center-of-mass energy dependence of the associated $e^+e^-\to\psi(2S)\pi^{+}\pi^{-}$ cross section. The mass distribution exhibits evidenceof two resonant structures. A fit to the $\psi(2S)\pi^{+}\pi^{-}$ massdistribution corresponding to the decay mode $\psi(2S)\to J/\psi\pi^{+}\pi^{-}$ yields a mass value of $4340 \pm16$ (stat) $\pm 9$ (syst)${\mathrm {MeV/c^{2}}}and a width of $94 \pm 32$ (stat) $\pm 13$ (syst) MeV forthe first resonance, and for the second a mass value of $4669 \pm 21$ (stat)$\pm 3$ (syst) ${\mathrm {MeV/c^{2}}}$ and a width of $104 \pm 48$ (stat) $\pm10$ (syst) MeV. In addition, we show the $pi^{+}\pi^{-}$ mass distributions forthese resonant regions.

Study of the reaction e^{+}e^{-}->psi(2S)pi^{-}pi^{-} via initial state radiation at BaBar