Chiral Perturbation Theory in the presence of external tensor sources and its phenomenological applications

por Vicent Mateu (IFIC Valencia)

miércoles 6 jun. 2007 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

"We construct the most general chirally-invariant Lagrangian for mesons in the presence of external sources coupled to the tensor current up to the p6-order (NLO). We provide a detailed discussion on the different mechanisms that ensure that our final set of operators is complete and minimal. Making use of this formalism we study two-point Green functions including tensorcurrents and their properties in the different energy regimes. This leads us to phenomenologic constraints in the spectrum of J^{PC}=1^{+-} and J^{PC}=1^{--} mesons in the large-Nc limit. Finally I will discuss a particular application for new physics search in radiative pion decay.