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Title: Large Delta I = 3/2 Contributions to epsilon'/epsilon in Supersymmetry

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 {r_arrow} d{bar q}q FCNC processes, which may induce a sizable CP-violating contribution to the I = 2 isospin amplitude in K {r_arrow} {pi}{pi} decays. This contribution only requires moderate mass splitting between the right-handed squarks {tilde u}{sub R} and {tilde d}{sub R}, and persists for squark masses of order 1 TeV. Taking into account current bounds on Im {delta}{sub sd}{sup LL} from K-{bar K} mixing, the resulting contribution to {epsilon}{prime}/{epsilon} could be an order of magnitude larger than the measured value.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
10519
Report Number(s):
SLAC-PUB-8231
TRN: US0103579
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 19 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; DATA; ISOSPIN; STANDARD MODEL; SUPERSYMMETRY; CP INVARIANCE; KAONS; PIONS; DECAY; S QUARKS

Citation Formats

Kagan, Alexander L. Large Delta I = 3/2 Contributions to epsilon'/epsilon in Supersymmetry. United States: N. p., 1999. Web. doi:10.2172/10519.
Kagan, Alexander L. Large Delta I = 3/2 Contributions to epsilon'/epsilon in Supersymmetry. United States. doi:10.2172/10519.
Kagan, Alexander L. Thu . "Large Delta I = 3/2 Contributions to epsilon'/epsilon in Supersymmetry". United States. doi:10.2172/10519. https://www.osti.gov/servlets/purl/10519.
@article{osti_10519,
title = {Large Delta I = 3/2 Contributions to epsilon'/epsilon in Supersymmetry},
author = {Kagan, Alexander L},
abstractNote = {We show that in supersymmetric extensions of the Standard Model gluino box diagrams can yield a large {Delta}I = 3/2 contribution to s {r_arrow} d{bar q}q FCNC processes, which may induce a sizable CP-violating contribution to the I = 2 isospin amplitude in K {r_arrow} {pi}{pi} decays. This contribution only requires moderate mass splitting between the right-handed squarks {tilde u}{sub R} and {tilde d}{sub R}, and persists for squark masses of order 1 TeV. Taking into account current bounds on Im {delta}{sub sd}{sup LL} from K-{bar K} mixing, the resulting contribution to {epsilon}{prime}/{epsilon} could be an order of magnitude larger than the measured value.},
doi = {10.2172/10519},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}

Technical Report:

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