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Precise measurement of the e(+)e(-)->pi(+)pi(-)(gamma) cross section with the initial state radiation method at BABAR

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BaBar Collaboration (Including:

Aubert, B., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M. et al.
). (2009) Precise measurement of the e(+)e(-)->pi(+)pi(-)(gamma) cross section with the initial state radiation method at BABAR. Physical Review Letters, Vol.103 (No.23). article no. 23180. ISSN 0031-9007

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Abstract

A precise measurement of the cross section of the process e(+)e(-)->pi(+)pi(-)(gamma) from threshold to an energy of 3 GeV is obtained with the initial state radiation (ISR) method using 232 fb(-1) of data collected with the BABAR detector at e(+)e(-) center-of-mass energies near 10.6 GeV. The ISR luminosity is determined from a study of the leptonic process e(+)e(-)->mu(+)mu(-)gamma(gamma). The leading-order hadronic contribution to the muon magnetic anomaly calculated using the pi pi cross section measured from threshold to 1.8 GeV is (514.1 +/- 2.2(stat)+/- 3.1(syst))x10(-10).

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Date: 4 December 2009
Volume: Vol.103
Number: No.23
Number of Pages: 7
Page Range: article no. 23180
Identification Number: 10.1103/PhysRevLett.103.231801
Status: Peer Reviewed
Publication Status: Published
Funder: DOE, NSF (USA), NSERC (Canada), CEA, CNRS-IN2P3 (France), BMBF, DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), STFC (United Kingdom), Marie Curie EIF (European Union), A.P. Sloan Foundation
URI: http://wrap.warwick.ac.uk/id/eprint/16791

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