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http://hdl.handle.net/2445/125031
Title: | Precise measurement of the e+e−→π+π−(γ) cross section with the initial state radiation method at BABAR |
Author: | Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Partícules (Física nuclear) Mesons (Física nuclear) Particles (Nuclear physics) Mesons (Nuclear physics) |
Issue Date: | 3-Dec-2009 |
Publisher: | American Physical Society |
Abstract: | A precise measurement of the cross section of the process eþe ! þ ðÞ 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 eþe center-of-mass energies near 10.6 GeV. The ISR luminosity is determined from a study of the leptonic process eþe ! þ ðÞ. The leading-order hadronic contribution to the muon magnetic anomaly calculated using the cross section measured from threshold to 1.8 GeV is ð514:1 2:2ðstatÞ 3:1ðsystÞÞ 10 10. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.103.231801 |
It is part of: | Physical Review Letters, 2009, vol. 103, p. 231801 |
URI: | http://hdl.handle.net/2445/125031 |
Related resource: | https://doi.org/10.1103/PhysRevLett.103.231801 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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