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Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/131795
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dc.contributor.authorConstantinou, M.-
dc.contributor.authorDimopoulos, P.-
dc.contributor.authorFrezzotti, R.-
dc.contributor.authorJansen, K.-
dc.contributor.authorGimenez, V.-
dc.contributor.authorLubicz, V.-
dc.contributor.authorMescia, Federico-
dc.contributor.authorPanagopoulos, H.-
dc.contributor.authorPapinutto, M.-
dc.contributor.authorRossi, G. C.-
dc.contributor.authorSimula, S.-
dc.contributor.authorSkouroupathis, A.-
dc.contributor.authorStylianou, F.-
dc.contributor.authorVladikas, A.-
dc.contributor.authorETM Collaboration-
dc.date.accessioned2019-04-08T12:11:20Z-
dc.date.available2019-04-08T12:11:20Z-
dc.date.issued2011-01-01-
dc.identifier.issn1550-7998-
dc.identifier.urihttp://hdl.handle.net/2445/131795-
dc.description.abstractWe present an unquenched N f = 2 lattice computation of the B K parameter which controls K 0 − ¯¯¯¯ K 0 oscillations. A partially quenched setup is employed with two maximally twisted dynamical (sea) light Wilson quarks, and valence quarks of both the maximally twisted and the Osterwalder-Seiler variety. Suitable combinations of these two kinds of valence quarks lead to a lattice definition of the B K parameter which is both multiplicatively renormalizable and O ( a ) improved. Employing the nonperturbative RI-MOM scheme, in the continuum limit and at the physical value of the pion mass we get B RGI K = 0.729 ± 0.030 , a number well in line with the existing quenched and unquenched determinations.-
dc.format.extent20 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.83.014505-
dc.relation.ispartofPhysical Review D, 2011, vol. 83, num. 1, p. 014505-
dc.relation.urihttps://doi.org/10.1103/PhysRevD.83.014505-
dc.rights(c) American Physical Society, 2011-
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationFísica de partícules-
dc.subject.classificationExperiments-
dc.subject.otherParticle physics-
dc.subject.otherExperiments-
dc.titleBK-parameter from Nf = 2 twisted mass lattice QCD-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec623813-
dc.date.updated2019-04-08T12:11:20Z-
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/249309/EU//HPLQCD-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
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