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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.citation	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.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.subject	Física
dc.title	Kaon weak matrix elements with Wilson fermions
dc.type	journal article	es_ES
dc.date.updated	2014-09-25T11:57:24Z
dc.identifier.doi	10.1016/S0920-5632(03)01551-2
dc.identifier.idgrec	041532
dc.rights.accessRights	open access	es_ES