Title

K(+)K(+) scattering length from lattice QCD

Abstract

The K(+)K(+) scattering length is calculated in fully-dynamical lattice QCD with domain-wall valence quarks on the MILC asqtad-improved gauge configurations with rooted-staggered sea quarks. Three-flavor mixed-action chiral perturbation theory at next-to-leading order, which includes the leading effects of the finite lattice spacing, is used to extrapolate the results of the lattice calculation to the physical value of m(K)(+)/f(K)(+). We find m(K)(+)a(K)(+)K(+)=-0.352 +/- 0.016, where the statistical and systematic errors have been combined in quadrature.

Department

Physics

Publication Date

5-21-2008

Journal Title

Physical Review D

Publisher

AMERICAN PHYSICAL SOCIETY

Digital Object Identifier (DOI)

10.1103/PhysRevD.77.094507

Document Type

Article

Rights

© 2008 The American Physical Society

Share

COinS