Quasi-Fixed Points and Charge and Colour Breaking in Low Scale Models

Preprint

8 June 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9909448

Abstract

We show that the current LEP2 lower bound upon the minimal supersymmetric standard model (MSSM) lightest Higgs mass rules out quasi-fixed scenarios for string scales between 10^6 and 10^{11} GeV unless the heaviest stop mass is more than 2 TeV. We consider the implications of the low string scale for charge and colour breaking (CCB) bounds in the MSSM, and demonstrate that CCB bounds from F and D-flat directions are significantly weakened. For scales less than 10^{10} GeV these bounds become merely that degenerate scalar mass squared values are positive at the string scale.

Keywords

CHARGE AND COLOUR
COLOUR BREAKING
STANDARD MODEL
STRING SCALE
QUASI FIXED
MSSM
GEV
CCB

All Related Versions

Version 1, 1999-09-21, ArXiv
Version 2, 1999-09-27, ArXiv
Version 3, 1999-10-13, ArXiv
Version 4, 2000-06-08, ArXiv
Published version: Journal of High Energy Physics, 2000 (07), 037.

This publication has 0 references indexed in Scilit: