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EnglishWe have measured the cross section sigma(e(+)e(-) --> pi (+) pi (-) y) at an energy W = m(phi) = 1.02 GeV with the KLOE detector at the electron-positron collider DAPhiNE. From the dependence of the cross section on the invariant mass of the two-pion system, we extract sigma(e(+) e(-) --> pi(+)pi(-)) for the mass range 0.35 < s < 0.95 GeV2. From this result, we calculate the pion form factor and the hadronic contribution to the muon anomaly, A(mu). (C) 2004 Elsevier B.V. All rights reserved.
| Titolo: | Measurement of sigma(e(+)e(-) -> pi(+)pi(-)gamma) and extraction of sigma(e(+)e(-) -> pi(+)pi(-)) below 1 GeV with the KLOE detector |
| Autori: | |
| Data di pubblicazione: | 2005 |
| Rivista: | |
| Abstract: | We have measured the cross section sigma(e(+)e(-) --> pi (+) pi (-) y) at an energy W = m(phi) = 1.02 GeV with the KLOE detector at the electron-positron collider DAPhiNE. From the dependence of the cross section on the invariant mass of the two-pion system, we extract sigma(e(+) e(-) --> pi(+)pi(-)) for the mass range 0.35 < s < 0.95 GeV2. From this result, we calculate the pion form factor and the hadronic contribution to the muon anomaly, A(mu). (C) 2004 Elsevier B.V. All rights reserved. |
| Handle: | http://hdl.handle.net/11367/46909 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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