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Study of the reaction e^{+}e^{-}→J/ψπ^{+}π^{-} via initial-state radiation at BABAR
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(2012) Study of the reaction e^{+}e^{-}→J/ψπ^{+}π^{-} via initial-state radiation at BABAR. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.86 (No.5). Article no.051102 . doi:10.1103/PhysRevD.86.051102 ISSN 1550-7998.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.86.051102
Abstract
We study the process e +e -→J/ψπ +π - 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 10.58 and 10.54 GeV, and correspond to an integrated luminosity of 454fb -1. We investigate the J/ψπ +π - mass distribution in the region from 3.5 to 5.5GeV/c2. Below 3.7GeV/c2 the ψ(2S) signal dominates, and above 4GeV/c2 there is a significant peak due to the Y(4260). A fit to the data in the range 3.74-5.50GeV/c2 yields a mass value 4245±5(stat)±4(syst)MeV/c2 and a width value 114-15+16(stat) ±7(syst)MeV for this state. We do not confirm the report from the Belle Collaboration of a broad structure at 4.01GeV/c2. In addition, we investigate the π +π - system which results from Y(4260) decay. © 2012 American Physical Society.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | 2012 | ||||
| Dates: |
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| Volume: | Vol.86 | ||||
| Number: | No.5 | ||||
| Page Range: | Article no.051102 | ||||
| DOI: | 10.1103/PhysRevD.86.051102 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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