Ritorno radiativo per la misura di R: come e perche

Details Ritorno radiativo per la misura di R: come e perche Ritorno radiativo per la misura di R: come e perche

2003-11-12

arxiv.org/abs/hep-ph/0311158v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given in italian at Incontri sulla Fisica delle Alte Energie, Lecce, Italy, Apr 2003; 4 pages

Scientific paper

The measurement of the pion form factor and, more generally, of the cross section for electron--positron annihilation into hadrons through the radiative return has become an important task for high luminosity colliders such as the $\Phi$- or $B$-meson factories. This quantity is crucial for predictions of the hadronic contributions to $(g-2)_\mu$, the anomalous magnetic moment of the muon, and to the running of the electromagnetic coupling. But the radiative return opens also the possibility of many other physical applications. The physics potential of this method at high luminosity meson factories is discussed and recent results are reviewed.

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