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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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|---|---|---|---|---|
| 577725.pdf | 203.87 kB | Adobe PDF | View/Open |
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