Rho decay width from the lattice

J. Frison (1, 2) , S. Durr (3, 4) , Z. Fodor (3, 5, 4) , C. Hoelbling (3) , S. D. Katz (5) , S. Krieg (3, 4) , T. Kurth (3) , Laurent Lellouch (2, 1) , T. Lippert (3, 4) , A. Portelli (1, 2) , A. Ramos (1, 2) , K. K. Szabo (3)

1 CPT - Centre de Physique Théorique - UMR 7332
2 CPT - E1 Physique des particules
3 Theoretische Teilchenphysik
4 JSC - Jülich Supercomputing Centre
5 Departement for Theoretical Physics

While the masses of light hadrons have been extensively studied in lattice QCD simulations, there exist only a few exploratory calculations of the strong decay widths of hadronic resonances. We will present preliminary results of a computation of the rho meson width obtained using $N_f=2+1$ flavor simulations. The work is based on L\"uscher's formalism and its extension to moving frames.

Domaines: Physique des Hautes Energies - Réseau [hep-lat]

J. Frison, S. Durr, Z. Fodor, C. Hoelbling, S. D. Katz, et al.. Rho decay width from the lattice. 28th International Symposium on Lattice Field Theory (Lattice 2010), Jun 2010, Villasimius, Italy. pp.139. ⟨hal-01258067⟩