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

Authors

Silas R. Beane, University of New HampshireFollow
Thomas C. LuuFollow
Kostas OriginosFollow
Assumpta ParrenoFollow
Martin J. SavageFollow
Aaron Torok, University of New HampshireFollow
Andre Walker-LoudFollow

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

Recommended Citation

Beane, Silas R.; Luu, Thomas C.; Originos, Kostas; Parreno, Assumpta; Savage, Martin J.; Torok, Aaron; and Walker-Loud, Andre, "K(+)K(+) scattering length from lattice QCD" (2008). Physical Review D. 123.
https://scholars.unh.edu/physics_facpub/123

Rights

© 2008 The American Physical Society