What if the LHC does not find supersymmetry in the sqrt(s)=7 TeV run?

TL;DR

This paper explores the consequences for supersymmetry if the LHC at 7 TeV does not detect any signals, analyzing how such non-observation constrains supergravity models and particle masses.

Contribution

It provides a combined analysis of low-energy data, dark matter constraints, and LHC exclusion limits within minimal supergravity models under the assumption of no early supersymmetry signals.

Findings

Non-observation still compatible with low-energy and dark matter data.

Squarks and gluinos below 1 TeV are excluded.

Acceptable models can exist without early LHC supersymmetry signals.

Abstract

We investigate the implications for supersymmetry from an assumed absence of any signal in the first period of LHC data taking at 7 TeV center-of-mass energy and with 1 to 7 fb^(-1) of integrated luminosity. We consider the zero-lepton plus four jets and missing transverse energy signature, and perform a combined fit of low-energy measurements, the dark matter relic density constraint and potential LHC exclusions within a minimal supergravity model. A non-observation of supersymmetry in the first period of LHC data taking would still allow for an acceptable description of low-energy data and the dark matter relic density in terms of minimal supergravity models, but would exclude squarks and gluinos with masses below 1 TeV.