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Matrix elements of Delta S = 2 operators with Wilson fermions

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Matrix elements of Delta S = 2 operators 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	Lubicz, V.
dc.contributor.author	Martinelli, Guido
dc.contributor.author	Papinutto, Mauro
dc.date.accessioned	2014-09-25T12:11:36Z
dc.date.available	2014-09-25T12:11:36Z
dc.date.issued	2002
dc.identifier.citation	Becirevic, D. Boucaud, Ph. Giménez Gómez, Vicente Lubicz, V. Martinelli, G. Papinutto, Mauro 2002 Matrix elements of Delta S = 2 operators with Wilson fermions Nuclear Physics B-Proceedings Supplements 106 326 328
dc.identifier.uri	http://hdl.handle.net/10550/38982
dc.description.abstract	We test the recent proposal of using the Ward identities to compute the K-0 - (K) over bar (0) mixing amplitude with Wilson fermions, without the problem of spurious lattice subtractions. From our simulations, we observe no difference between results obtained with and without subtractions. From the standard study of the complete set of DeltaS = 2 operators, we quote the following (preliminary) results: B-K((MS) over bar) (2 GeV) = 0.70(10), (O-tau)(K-->pipi)((I=2)) = 0.10(2)(1)GeV3, <O-8>((I=2))(K-->pipi) = 0.49(6)(0)GeV3.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B-Proceedings Supplements, 2002, vol. 106, p. 326-328
dc.subject	Física
dc.title	Matrix elements of Delta S = 2 operators with Wilson fermions
dc.type	journal article	es_ES
dc.date.updated	2014-09-25T12:11:36Z
dc.identifier.doi	10.1016/S0920-5632(01)01703-0
dc.identifier.idgrec	041496
dc.rights.accessRights	open access	es_ES