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40 papers · 2 filters
Resonances and the Weinberg--Tomozawa 56-baryon --35-meson interaction
C. Garcia-Recio, J. Nieves, L. L. Salcedo
Vector meson degrees of freedom are incorporated into the Weinberg-Tomozawa (WT) meson-baryon chiral Lagrangian by using a scheme which relies on spin--flavor SU(6) symmetry. The c…
New physics from ultrahigh energy cosmic rays
J. I. Illana, M. Masip, D. Meloni
Cosmic rays from outer space enter the atmosphere with energies of up to 10^{11} GeV. The initial particle or a secondary hadron inside the shower may then interact with an air nuc…
Meson-Baryon s-wave Resonances with Strangeness -3
C. Garcia-Recio, J. Nieves, L. L. Salcedo
Starting from a consistent SU(6) extension of the Weinberg-Tomozawa (WT) meson-baryon chiral Lagrangian (Phys. Rev. D74 (2006) 034025), we study the s-wave meson-baryon resonances…
Warm inflation dynamics in the low temperature regime
Mar Bastero-Gil Arjun Berera
Warm inflation scenarios are studied with the dissipative coefficient computed in the equilibrium approximation. Use is made of the analytical expressions available in the low temp…
Quark model study of the semileptonic B -> pi decay
C. Albertus, J. M. Flynn, E. Hernandez +2
The semileptonic decay B->pi is studied starting from a simple quark model and taking into account the effect of the B* resonance. A novel, multiply subtracted, Omnès dispersion re…
Large Weinberg-Tomozawa interaction and spin-flavor symmetry
C. Garcia-Recio, J. Nieves, L. L. Salcedo
The construction of an extended version of the Weinberg-Tomozawa Lagrangian, in which baryons and mesons form spin-flavor multiplets, is reviewed and some of its properties discuss…