Lattice2010

Session

Parallel 50: Hadronic structure and interactions

18 Jun 2010, 16:40

Villasimius, Sardinia

260. An extention to the Luescher's finite volume method above inelastic thresholds (formalism)

Noriyoshi Ishii (University of Tokyo)

18/06/2010, 16:40

Hadronic structure and interactions

We propose a new method to calculate scattering amplitudes above inelastic thresholds as an extention to the Luescher's finite volume method for elastic scattering phase shifts. In the inifinite volume, the asymptotic form of hadronic Bethe-Salpeter (BS) wave functions at spatial infinity can be derived in exactly the same manner as given in Ref.[1,2,3]. It...

65. Extracting Scattering Parameters using the Isospin Chemical Potential

Michael Buchoff (University of Maryland, College Park)

18/06/2010, 17:00

Hadronic structure and interactions

Hadronic scattering mediated through the strong interaction has been an area of great interest for both theory and experiment. Recently, lattice QCD calculations of scattering processes from first principles have seen remarkable progress, including multiple calculations of two-pion scattering lengths that agree with experiment to within a few percent. However, there exists a certain class of...

59. The chiral and angular momentum content of the $\rho$-meson

Markus LIMMER (Karl-Franzens-Universitaet Graz)

18/06/2010, 17:20

Hadronic structure and interactions

The variational method allows one to study the mixing of interpolators with different chiral transformation properties in the nonperturbatively determined physical state. It is then possible to define and calculate in a gauge-invariant manner the chiral as well as the partial wave content of the quark-antiquark component of a meson in the infrared, where mass is generated. Using a ...

242. Rho decay widths from the lattice

Julien Frison (Centre de Physique Théorique (Marseille))

18/06/2010, 17:40

Hadronic structure and interactions

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 Luescher's formalism and its extension to moving frames.