Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-02-13
JHEP 0303:016,2003
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 6 figures; comment added pointing out that 2-loop QCD corrections to mt are incorrect in some of the programs invest
Scientific paper
10.1088/1126-6708/2003/03/016
We estimate the current theoretical uncertainty in sparticle mass predictions by comparing several state-of-the-art computations within the minimal supersymmetric standard model (MSSM). We find that the theoretical uncertainty is comparable to the expected statistical errors from the Large Hadron Collider (LHC), and significantly larger than those expected from a future e+e- Linear Collider (LC). We quantify the theoretical uncertainty on relevant sparticle observables for both LHC and LC, and show that the value of the error is significantly dependent upon the supersymmetry (SUSY) breaking parameters. We also present the theoretical uncertainty induced in fundamental-scale SUSY breaking parameters when they are fitted from LHC measurements. Two regions of the SUSY parameter space where accurate predictions are particularly difficult are examined in detail: the large tan(beta) and focus point regimes.
Allanach Ben C.
Kraml Sabine
Porod Werner
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