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B-parameters for ΔS=2 supersymmetric operators

A. Vladikas, G. Martinelli, V. Gimenez, A. Donini, M. Talevi, Leonardo Giusti, L. Conti, Chris Allton Orcid Logo

Physics Letters B, Volume: 453, Issue: 1-2, Pages: 30 - 39

Swansea University Author: Chris Allton Orcid Logo

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DOI (Published version): 10.1016/S0370-2693(99)00283-X

Abstract

We present a calculation of the matrix elements of the most general set of DeltaS=2 dimension-six four-fermion operators. The values of the matrix elements are given in terms of the corresponding B-parameters. Our results can be used in many phenomenological applications, since the operators conside...

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Published in: Physics Letters B
ISSN: 03702693
Published: 1999
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URI: https://cronfa.swan.ac.uk/Record/cronfa28488
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spelling 2016-08-08T11:55:41.9482556 v2 28488 2016-06-02 B-parameters for ΔS=2 supersymmetric operators de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false 2016-06-02 SPH We present a calculation of the matrix elements of the most general set of DeltaS=2 dimension-six four-fermion operators. The values of the matrix elements are given in terms of the corresponding B-parameters. Our results can be used in many phenomenological applications, since the operators considered here give important contributions to K^0--K^0bar 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 performed 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. Journal Article Physics Letters B 453 1-2 30 39 03702693 31 12 1999 1999-12-31 10.1016/S0370-2693(99)00283-X http://inspirehep.net/record/471904 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2016-08-08T11:55:41.9482556 2016-06-02T15:06:51.4879555 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics A. Vladikas 1 G. Martinelli 2 V. Gimenez 3 A. Donini 4 M. Talevi 5 Leonardo Giusti 6 L. Conti 7 Chris Allton 0000-0003-0795-124X 8
title B-parameters for ΔS=2 supersymmetric operators
spellingShingle B-parameters for ΔS=2 supersymmetric operators
Chris Allton
title_short B-parameters for ΔS=2 supersymmetric operators
title_full B-parameters for ΔS=2 supersymmetric operators
title_fullStr B-parameters for ΔS=2 supersymmetric operators
title_full_unstemmed B-parameters for ΔS=2 supersymmetric operators
title_sort B-parameters for ΔS=2 supersymmetric operators
author_id_str_mv de706a260fa1e1e47430693e135f41c7
author_id_fullname_str_mv de706a260fa1e1e47430693e135f41c7_***_Chris Allton
author Chris Allton
author2 A. Vladikas
G. Martinelli
V. Gimenez
A. Donini
M. Talevi
Leonardo Giusti
L. Conti
Chris Allton
format Journal article
container_title Physics Letters B
container_volume 453
container_issue 1-2
container_start_page 30
publishDate 1999
institution Swansea University
issn 03702693
doi_str_mv 10.1016/S0370-2693(99)00283-X
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url http://inspirehep.net/record/471904
document_store_str 0
active_str 0
description We present a calculation of the matrix elements of the most general set of DeltaS=2 dimension-six four-fermion operators. The values of the matrix elements are given in terms of the corresponding B-parameters. Our results can be used in many phenomenological applications, since the operators considered here give important contributions to K^0--K^0bar 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 performed 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.
published_date 1999-12-31T03:34:40Z
_version_ 1763751473138630656
score 11.021648

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