Journal
PHYSICAL REVIEW D
Volume 89, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.89.111103
Keywords
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Funding
- SLAC
- DOE
- NSF (USA)
- NSERC (Canada)
- CEA
- CNRS-IN2P3 (France)
- BMBF
- DFG (Germany)
- INFN (Italy)
- FOM (The Netherlands)
- NFR (Norway)
- MES (Russia)
- MICIIN (Spain)
- STFC (United Kingdom)
- Marie Curie EIF (European Union)
- A.P. Sloan Foundation (U.S.A)
- STFC [ST/I000097/1, ST/M000761/1, ST/L006146/1, ST/J004855/1, ST/I003576/1, ST/H001085/2, ST/K00140X/1, ST/J005495/1, PP/E003095/1, ST/K003534/1, ST/L00352X/1] Funding Source: UKRI
- Division Of Physics
- Direct For Mathematical & Physical Scien [1404070] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [0969487, 1205805] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/J004855/1, ST/L00352X/1, ST/M000761/1, ST/J005495/1, ST/H001085/2, ST/K00140X/1, ST/I003576/1, PP/E003095/1, ST/K003534/1 GRIDPP, ST/K003534/1, ST/I000097/1, ST/L006146/1] Funding Source: researchfish
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We study the process e(+)e(-) -> psi(2S)pi(+)pi(-) with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with the BABAR detector at center-of-mass energies at and near the (nS) (n = 2, 3, 4) resonances and correspond to an integrated luminosity of 520 fb(-1). We investigate the psi(2S)pi(+)pi(-) mass distribution from 3.95 to 5.95 GeV/c(2), and measure the center-of-mass energy dependence of the associated e(+)e(-) -> psi(2S)pi(+)pi(-) cross section. The mass distribution exhibits evidence of two resonant structures. A fit to the psi(2S)pi(+)pi(-) mass distribution corresponding to the decay mode psi(2S) -> J/psi pi(+)pi(-) yields a mass value of 4340 +/- 16 (stat) +/- 9 (syst) MeV/c(2) and a width of 94 +/- 32 (stat) +/- 13 (syst) MeV for the first resonance, and for the second a mass value of 4669 +/- 21 (stat) +/- 3 (syst) MeV/c(2) and a width of 104 +/- 48 (stat) +/- 10 (syst) MeV. In addition, we show the pi(+)pi(-) mass distributions for these resonant regions.
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