5-13 November 2009
Mazatlán, México
Mexico/BajaSur timezone
Coffe break at Salon el Dorado for all sessions
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Contribution
Mazatlán, México
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salon bugambilias
Pion charge asymmetries in e+ e- --> pi+ pi- gamma below 1 GeV
Speakers
- Luis Armando GALLEGOS INFANTE
Primary authors
- Luis Armando GALLEGOS INFANTE (U. Guadalajara)
Abstract content
Summary
We calculate the forward-backward pion charge asymmetry for e+ e- --> pi+ pi- gamma process. For the final state radiation contribution we include Bremsstrahlung, double resonance and four different models (Kaon Loop Model, Resonance Chiral Perturbation Theory, Unitarized Chiral Perturbation Theory and Linear Sigma Model) for intermediate phi decay. We perform a Montecarlo code and compare our results with experimental data. In general, we reproduce the data above 700 MeV (except for Resonance Chiral Perturbation Theory), but none of the models yield a good description of the asymmetry between 400 and 700 MeV.