Initial-state radiation measurement of the e+e−→π+π−π+π− cross section
We study the process e+e−→π+π−π+π−γ, with a photon emitted from the initial-state electron or positron, using 454.3 fb−1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260 000 signal events. We use these data to extract the nonradiative σ(e+e−→π+π−π+π−) cross sect...
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| Main Authors: | , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
2012
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2012, Volume: 85, Issue: 11 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.85.112009 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.85.112009 Verlag, Volltext: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.85.112009 |
| Author Notes: | J.P. Lees, A. Adametz, J. Marks, U. Uwer [und weitere] (BABAR Collaboration) |
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| 520 | |a We study the process e+e−→π+π−π+π−γ, with a photon emitted from the initial-state electron or positron, using 454.3 fb−1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260 000 signal events. We use these data to extract the nonradiative σ(e+e−→π+π−π+π−) cross section in the energy range from 0.6 to 4.5 GeV. The total uncertainty of the cross section measurement in the peak region is less than 3%, higher in precision than the corresponding results obtained from energy scan data. | ||
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