Precise Determination of the I=2 pipi Scattering Length from Mixed-Action Lattice QCD

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dc.creatorBeane, Silas R.
dc.creatorLuu, Thomas C.
dc.creatorOrginos, Kostas
dc.creatorParreno, Assumpta
dc.creatorSavage, Martin J.
dc.creatorTorok, Aaron
dc.creatorWalker-Loud, Andre
dc.date2007-06-20
dc.date.accessioned2026-07-07T11:17:04Z
dc.date.available2026-07-07T11:17:04Z
dc.descriptionThe I=2 pipi scattering length is calculated in fully-dynamical lattice QCD with domain-wall valence quarks on the asqtad-improved coarse MILC configurations (with fourth-rooted staggered sea quarks) at four light-quark masses. Two- and three-flavor mixed-action chiral perturbation theory at next-to-leading order is used to perform the chiral and continuum extrapolations. At the physical charged pion mass, we find m_pi a_pipi(I=2) = -0.04330 +- 0.00042, where the error bar combines the statistical and systematic uncertainties in quadrature.
dc.description20 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0706.3026
dc.identifierhttp://arxiv.org/abs/0706.3026
dc.identifierPhys.Rev.D77:014505,2008
dc.identifierdoi:10.1103/PhysRevD.77.014505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192885
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePrecise Determination of the I=2 pipi Scattering Length from Mixed-Action Lattice QCD
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