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Confirmation of the Y(4260) Resonance Production in ISR

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arxiv hep-ex/0611021 v1 pith:7ERH6QPO submitted 2006-11-13 hep-ex

Q. He , et al. , CLEO Collaboration This is my paper · ORCID
classification hep-ex
keywords resonancestatsystdatagammapi-jproductionbabar
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Using 13.3 fb^-1 of e+e- collision data taken in the Upsilon(1S-4S) region with the CLEO III detector at the CESR collider, a search has been made for the new resonance Y(4260) recently reported by the BaBar Collaboration. The production of Y(4260) in initial state radiation (ISR), and its decay into pi+pi-J/psi are confirmed. A good quality fit to our data is obtained with a single resonance. We determine M(Y(4260))=(4284+17-16(stat)+-4(syst)) MeV/c^2, Gamma(Y(4260))=(73+39-25(stat)+-5(syst)) MeV/c^2, and Gamma_ee(Y(4260))xBr(Y(4260)->pi+pi-J/psi)=(8.9+3.9-3.1(stat)+-1.9(syst)) eV/c^2.

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Cited by 4 Pith papers

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