ar X iv : h ep - p h / 05 10 05 6 v 1 5 O ct 2 00 5 One - loop Renormalization of Resonance Chiral Theory with Scalar and Pseudoscalar Resonances ∗

ar X iv : h ep - p h / 04 05 22 8 v 1 2 4 M ay 2 00 4 Unitary chiral dynamics in J / Ψ → V PP decays and the role of scalar mesons

We make a theoretical study of the J/Ψ decays into ωππ, φππ, ωKK̄ and φKK̄ using the techniques of the chiral unitary approach stressing the important role of the scalar resonances dynamically generated through the final state interaction of the two pseudoscalar mesons. We also discuss the importance of new mechanisms with intermediate exchange of vector and axial-vector mesons and the role playe...

ar X iv : h ep - p h / 05 03 27 3 v 2 2 9 Ju n 20 05 Low lying axial - vector mesons as dynamically generated resonances

We make a theoretical study of the s-wave interaction of the nonet of vector mesons with the octet of pseudoscalar mesons starting from a chiral invariant La-grangian and implementing unitarity in coupled channels. By looking for poles in the unphysical Riemann sheets of the unitarized scattering amplitudes, we get two octets and one singlet of axial-vector dynamically generated resonances. The...

ar X iv : h ep - p h / 05 08 19 4 v 1 1 8 A ug 2 00 5 Analytic ε − Expansion of the Scalar One - loop

We derive the first three terms of the ε− expansion of the scalar one-loop Bhabha box function from a representation in terms of three generalized hypergeometric functions, which is valid in arbitrary dimensions.

ar X iv : h ep - p h / 02 05 01 6 v 2 3 0 O ct 2 00 2 Scalar a 0 ( 980 ) meson in φ → π 0 ηγ decay

ar X iv : h ep - t h / 96 12 11 1 v 1 1 0 D ec 1 99 6 The antiferromagnetic φ 4 Model , II . The one - loop renormalization

It is shown that the four dimensional antiferromagnetic lattice φ model has the usual non-asymptotically free scaling law in the UV regime around the chiral symmetrical critical point. The theory describes a scalar and a pseudoscalar particle. A continuum effective theory is derived for low energies. A possibility of constructing a model with a single chiral boson is mentioned.