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arXiv · 0709.1169

The K+K+ Scattering Length from Lattice QCD

Silas Beane·Thomas Luu·Kostas Orginos·Assumpta Parreno·Martin Savage·Aaron Torok·Andre Walker-Loud
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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.

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Silas Beane, Thomas Luu, Kostas Orginos, Assumpta Parreno, Martin Savage, Aaron Torok, Andre Walker-Loud. 2007-09-07. The K+K+ Scattering Length from Lattice QCD. https://doi.org/10.1103/physrevd.77.094507

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