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B-parameters for Delta S=2 supersymmetric operators

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B-parameters for Delta S=2 supersymmetric operators

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dc.contributor.author	Allton, C.R.
dc.contributor.author	Conti, Livio
dc.contributor.author	Donini, Andrea
dc.contributor.author	Giménez Gómez, Vicente
dc.contributor.author	Giusti, L.
dc.contributor.author	Martinelli, Guido
dc.contributor.author	Talevi, Mauro
dc.contributor.author	Vladikas, A.
dc.date.accessioned	2014-09-26T11:47:17Z
dc.date.available	2014-09-26T11:47:17Z
dc.date.issued	1999
dc.identifier.citation	Allton, C.R. Conti, Livio Donini, Andrea Giménez Gómez, Vicente Giusti, L. Martinelli, G. Talevi, Mauro Vladikas, A. 1999 B-parameters for Delta S=2 supersymmetric operators Physics Letters B 453 1-2 30 39
dc.identifier.uri	http://hdl.handle.net/10550/39012
dc.description.abstract	We present a calculation of the matrix elements of the most general set of Delta S = 2 dimension-six four-fermion operators. The values of the matrix elements are given in terms of the corresponding B-parameters. Out results can be used in many phenomenological applications, since the operators considered here give important contributions to K-0-(K) over bar(0) mixing in several extensions of the Standard Model (supersymmetry, left-right symmetric models, multi-Higgs models etc.). The determination of the matrix elements improves the accuracy of the phenomenological analyses intended to put bounds on basic parameters of the different models, as for example the pattern of the sfermion mass matrices. The calculation has been pet-formed on the lattice, using the tree-level improved Clover action at two different values of the strong coupling constant (beta = 6/g(0)(2)(a)= 6.0 and 6.2, corresponding to a(-1) = 2.1 and 2.7 GeV respectively), in the quenched approximation. The renormalization constants and mixing coefficients of the lattice operators have been obtained non-perturbatively.
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 1999, vol. 453, num. 1-2, p. 30-39
dc.subject	Física
dc.title	B-parameters for Delta S=2 supersymmetric operators
dc.type	journal article	es_ES
dc.date.updated	2014-09-26T11:47:17Z
dc.identifier.doi	10.1016/S0370-2693(99)00283-X
dc.identifier.idgrec	099570
dc.rights.accessRights	open access	es_ES