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11 papers · 2 filters
Comment on the Pion Pole Part of the Light-by-Light Contribution to the Muon
Johan Bijnens, Elisabetta Pallante, Joaquim Prades
We comment on the recent calculations of the pion pole part of the light-by-light contribution to the muon anomalous magnetic moment and we point out where the analysis in our prev…
Signals from extra dimensions decoupled from the compactification scale
F. del Aguila, J. Santiago
Multilocalization provides a simple way of decoupling the mass scale of new physics from the compactification scale of extra dimensions. It naturally appears, for example, when loc…
Parton Distributions Functions of Pion, Kaon and Eta pseudoscalar mesons in the NJL model
R. M. Davidson, E. Ruiz Arriola
Parton distributions of pseudoscalar pi,K and eta mesons obtained within the NJL model using the Pauli-Villars regularization method are analyzed in terms of LO and NLO evolution,…
Matching the Electroweak Penguins , and Spectral Correlators
Johan Bijnens, Elvira Gamiz, Joaquim Prades
Exact analytical expressions for the coupling $\im G_E$ in terms of observable spectral functions are given. This coupling determines the size of the contribution t…
The Inverse Amplitude Method in Scattering in Chiral Perturbation Theory to Two Loops
J. Nieves, M. Pavon Valderrama, E. Ruiz Arriola
The inverse amplitude method is used to unitarize the two loop scattering amplitudes of SU(2) Chiral Perturbation Theory in the , and channels. An…
Parton distributions for the pion in a chiral quark model
E. Ruiz Arriola
Parton distributions for the pion are studied in a chiral quark model characterized by a quark propagator for which a spectral representation is assumed. Electromagnetic and chiral…