Precise measurement of the e+e−→π+π−(γ) cross section with the initial state radiation method at BABAR
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...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/125031 |
| Acceso en línea: | https://hdl.handle.net/2445/125031 |
| Access Level: | acceso abierto |
| Palabra clave: | Partícules (Física nuclear) Mesons (Física nuclear) Particles (Nuclear physics) Mesons (Nuclear physics) |
| Sumario: | 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. |
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