Large Delta(I)=3/2 Contribution to epsilon'/epsilon in Supersymmetry

Preprint

19 August 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9908404

Abstract

We show that in supersymmetric extensions of the Standard Model gluino box diagrams can yield a large Delta(I)=3/2 contribution to s->d+q(bar)+q FCNC processes, which may induce a sizable CP-violating contribution to the I=2 isospin amplitude in K->pi+pi decays. This contribution only requires moderate mass splitting between the right-handed up- and down-squarks, and persists for squark masses of order 1 TeV. Taking into account current bounds on Im(delta_{sd}^{LL}) from K-K(bar) mixing, the resulting contribution to epsilon'/epsilon could be an order of magnitude larger than the measured value.

Keywords

CONTRIBUTION TO EPSILON
STANDARD MODEL
SUPERSYMMETRY
CP VIOLATING
LARGE DELTA
SQUARKS
HANDED
BAR

All Related Versions

Version 1, 1999-08-19, ArXiv
Published version: Physical Review Letters, 83 (24), 4929.

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