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(pi)K scattering in full QCD with domain-wall valence quarks.

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dc.contributor.authorBeane, Silas R.cat
dc.contributor.authorBedaque, Paulo F.cat
dc.contributor.authorLuu, Thomas C.cat
dc.contributor.authorOrginos, Kostascat
dc.contributor.authorPallante, Elisabettacat
dc.contributor.authorParreño García, Assumptacat
dc.contributor.authorSavage, Martin J.cat
dc.date.accessioned2010-05-06T12:11:03Z
dc.date.available2010-05-06T12:11:03Z
dc.date.issued2006cat
dc.description.abstractWe calculate the pi+ K+ scattering length in fully-dynamical lattice QCD with domain-wall valence quarks on MILC lattices with rooted staggered sea-quarks at a lattice spacing of b=0.125 fm, lattice spatial size of L =2.5 fm and at pion masses of m_pi=290, 350, 490 and 600 MeV. The lattice data, analyzed at next-to-leading order in chiral perturbation theory, allows an extraction of the full pi K scattering amplitude at threshold. Extrapolating to the physical point gives m_pi a_3/2 = -0.0574 (+- 0.0016)(+0.0024 -0.0058) and m_pi a_1/2 = 0.1725 (+- 0.0017)(+0.0023 -0.0156) for the I=3/2 and I=1/2 scattering lengths, respectively, where the first error is statistical and the second error is an estimate of the systematic due to truncation of the chiral expansion.
dc.format.extent9 p.cat
dc.format.mimetypeapplication/pdfeng
dc.identifier.idgrec542924cat
dc.identifier.issn0556-2821cat
dc.identifier.urihttps://hdl.handle.net/2445/12483
dc.language.isoengeng
dc.publisherThe American Physical Societyeng
dc.relation.isformatofReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.74.114503cat
dc.relation.ispartofPhysical Review 2006, vol. 74, núm. 11, p. 114503-1-114503-9cat
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevD.74.114503
dc.rights(c) The American Physical Society, 2006
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationPartícules (Física nuclear)cat
dc.subject.classificationCromodinàmica quànticacat
dc.subject.otherParticles (Nuclear physics)eng
dc.subject.otherQuantum chromodynamicseng
dc.title(pi)K scattering in full QCD with domain-wall valence quarks.eng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersion

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