The Supersymmetric Flavor Problem for Heavy First-Two Generation Scalars at Next-to-Leading Order
Abstract
We analyze in detail the constraints on SUSY-model parameters obtained from K-Kbar mixing in the hypothesis of a splitted SUSY spectrum. FCNC contributions from gluino-squark-quark interactions are studied in the so-called mass insertion approximation. We present boundaries on mass insertions and on SUSY mass scales. We improve previous results by including the NLO-QCD corrections to Delta S=2 effective Hamiltonian and the complete set of B-parameters for the evaluation of hadronic matrix elements. A full set of magic-numbers, that can be used for further analyses of these models, is also given. We find that the inclusion of NLO-QCD corrections and the B-parameters change the results obtained at LO and in the Vacuum Insertion Approximation by an amount of about 25-35%.
Keywords
Cite
@article{arxiv.hep-ph/9809437,
title = {The Supersymmetric Flavor Problem for Heavy First-Two Generation Scalars at Next-to-Leading Order},
author = {Roberto Contino and Ignazio Scimemi},
journal= {arXiv preprint arXiv:hep-ph/9809437},
year = {2011}
}
Comments
22 Latex pages, 5 figures; Figs. 1,2 redrawn for K=0.22, section 4.1 revisited, references corrected. Submitted to European Journal of Physics C