Electron–positron annihilation into three pions and the radiative return

H. Czyż; A. Grzelińska; J.H. Kühn; G. Rodrigo

doi:10.1140/epjc/s2006-02614-7

EPJ

Electron–positron annihilation into three pions and the radiative return

H. Czyż¹, A. Grzelińska², J.H. Kühn² and G. Rodrigo³^*

¹ Institute of Physics, University of Silesia, 40007, Katowice, Poland
² Institut für Theoretische Teilchenphysik, Universität Karlsruhe, 76128, Karlsruhe, Germany
³ Instituto de Física Corpuscular, CSIC-Universitat de València, Apartado de Correos 22085, 46071, Valencia, Spain

Received: 14 December 2005
Revised: 2 May 2006
Published online: 21 July 2006

Abstract

The Monte Carlo event generator PHOKHARA, which simulates hadron and muon production at electron–positron colliders through radiative return, has been extended to final states with three pions. A model for the form factor based on generalized vector dominance has been employed, which is consistent with presently available experimental observations.