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The K+K+ Scattering Length from Lattice QCD

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arxiv 0709.1169 v1 pith:Q6SU5R7D submitted 2007-09-07 hep-lat hep-phnucl-th

Silas Beane , Thomas Luu , Kostas Orginos , Assumpta Parreno , Martin Savage , Aaron Torok , Andre Walker-Loud This is my paper · ORCID
classification hep-lathep-phnucl-th
keywords latticelengthquarksscatteringasqtad-improvedbeencalculatedcalculation
verification ladder T0 review T1 audit T2 compute T3 formal
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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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