phi P P' production in e+e- annihilation, scalar mesons and the new X(2175) resonance

por Mauro Napsuciale (Universidad de Guanajuato)

miércoles 6 feb. 2008 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

We present results for the calculation of e+e- -> phi P P'. It is shown that effects at the different scales involved in this reaction can be separated in clean way and that unitarized chiral perturbation theory applies to the different parts (one of them involving the scalar poles), yielding a reliable calculation in spite of the large center of mass energy. Our results are compared to recent results from BaBar for phi pi pi and phi K+K- in the final state. Implications for the new resonance X(2175) are discussed.