Beane, Silas R.Luu, Thomas C.Orginos, KostasParreño García, AssumptaSavage, Martin J.Torok, AaronWalker-Loud, AndréNPLQCD Collaboration2019-04-052019-04-052008-05-211550-7998https://hdl.handle.net/2445/131687The 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.11 p.application/pdfeng(c) American Physical Society, 2008Física de partículesHadronsNeutronsParticle physicsHadronsNeutronsinfo:eu-repo/semantics/article5886442019-04-05info:eu-repo/semantics/openAccess