Magnetic polarizability of hadrons from lattice QCD in the background field method

F. X. Lee; L. Zhou; W. Wilcox; J. Christensen

doi:10.1103/PhysRevD.73.034503

paper

Magnetic polarizability of hadrons from lattice QCD in the background field method

arXiv:hep-lat/0509065 · doi:10.1103/PhysRevD.73.034503

Abstract

We present a calculation of hadron magnetic polarizability using the techniques of lattice QCD. This is carried out by introducing a uniform external magnetic field on the lattice and measuring the quadratic part of a hadron's mass shift. The calculation is performed on a $2 4^{4}$ lattice with standard Wilson actions at beta=6.0 (spacing $a = 0.1$ fm) and pion mass down to about 500 MeV. Results are obtained for 30 particles covering the entire baryon octet ( $n$ , $p$ , $Σ^{0}$ , $Σ^{-}$ , $Σ^{+}$ , $Ξ^{-}$ , $Ξ^{0}$ , $Λ$ ) and decuplet ( $Δ^{0}$ , $Δ^{-}$ , $Δ^{+}$ , $Δ^{++}$ , $Σ^{* 0}$ , $Σ^{*-}$ , $Σ^{*+}$ , $Ξ^{* 0}$ , $Ξ^{*-}$ , $Ω^{-}$ ), plus selected mesons ( $π^{0}$ , $π^{+}$ , $π^{-}$ , $K^{0}$ , $K^{+}$ , $K^{-}$ , $ρ^{0}$ , $ρ^{+}$ , $ρ^{-}$ , $K^{* 0}$ , $K^{*+}$ , $K^{*-}$ ). The results are compared with available values from experiments and other theoretical calculations.

30 pages, 23 figures, 5 tables

Magnetic polarizability of hadrons from lattice QCD in the background field method

Abstract

References in corpus (20)

Cited by in corpus (51)