Kaon weak matrix elements with Wilson fermions
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Kaon weak matrix elements with Wilson fermions

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Kaon weak matrix elements with Wilson fermions

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dc.contributor.author Becirevic, D.
dc.contributor.author Boucaud, Ph.
dc.contributor.author Giménez Gómez, Vicente
dc.contributor.author David Lin, C.J.
dc.contributor.author Lubicz, V.
dc.contributor.author Martinelli, Guido
dc.contributor.author Papinutto, Mauro
dc.contributor.author Sachrajda, Christopher T.
dc.date.accessioned 2014-09-25T11:57:24Z
dc.date.available 2014-09-25T11:57:24Z
dc.date.issued 2003
dc.identifier.uri http://hdl.handle.net/10550/38978
dc.description.abstract We present results of several numerical studies with Wilson fermions relevant for kaon physics. We compute the (B-K) under bar parameter by using two different methods and extrapolate to the continuum limit. Our preliminary result is B-K((MS) over bar)(2 GeV) = 0.66(7). DeltaI = 3/2 K --> pipi matrix elements (MEs) are obtained by using the next-to-leading order (NLO) expressions derived in chiral perturbation theory (ChPT) in which the low energy constants (LECs) are determined by the lattice results computed at unphysical kinematics. From the simulation at beta=6.0 our (preliminary) results read: <pipi\O-7((MS) over bar)(2 GeV)\K>(1=2)=0.14(1)(1) GeV3 and <pipi\O-8((MS) over bar)(2 GeV)\K>(1=2)=0.69(6)(6) GeV3.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics B-Proceedings Supplements, 2003, vol. 119, p. 359-361
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Becirevic, D. Boucaud, Ph. Giménez Gómez, Vicente David Lin, C.J. Lubicz, V. Martinelli, G. Papinutto, Mauro Sachrajda, C.T. 2003 Kaon weak matrix elements with Wilson fermions Nuclear Physics B-Proceedings Supplements 119 359 361
dc.subject Física
dc.title Kaon weak matrix elements with Wilson fermions
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-09-25T11:57:24Z
dc.identifier.doi http://dx.doi.org/10.1016/S0920-5632(03)01551-2
dc.identifier.idgrec 041532

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