TY - JOUR
T1 - Selecting supersymmetric string scenarios from sparticle spectra
AU - Allanach, Benjamin C.
AU - Grellscheid, David
AU - Quevedo, Fernando
PY - 2002/5/1
Y1 - 2002/5/1
N2 - We approach the following question: if supersymmetry is discovered, how can we select among different supersymmetric extensions of the Standard Model? In particular, we perform an analysis of the sparticle spectrum in low-energy string effective theories, asking which observables best distinguish various scenarios. We examine scenarios differing by the fundamental string scale and concentrate on GUT and intermediate scale models. We scan over four parameters (two goldstino angles, tan β and the gravitino mass) in each scenario, finding ratios of sparticle masses that provide the maximum discrimination between them. The necessary accuracy for discrimination is determined in each case. We find that the required accuracy on various sparticle mass ratios is at the few percent level, a precision that may be achieved in future linear colliders. We also map out phenomenologically viable regions of parameter space.
AB - We approach the following question: if supersymmetry is discovered, how can we select among different supersymmetric extensions of the Standard Model? In particular, we perform an analysis of the sparticle spectrum in low-energy string effective theories, asking which observables best distinguish various scenarios. We examine scenarios differing by the fundamental string scale and concentrate on GUT and intermediate scale models. We scan over four parameters (two goldstino angles, tan β and the gravitino mass) in each scenario, finding ratios of sparticle masses that provide the maximum discrimination between them. The necessary accuracy for discrimination is determined in each case. We find that the required accuracy on various sparticle mass ratios is at the few percent level, a precision that may be achieved in future linear colliders. We also map out phenomenologically viable regions of parameter space.
KW - Beyond Standard Model
KW - Supersymmetric Standard Model
KW - Supersymmetry Breaking
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U2 - 10.1088/1126-6708/2002/05/048
DO - 10.1088/1126-6708/2002/05/048
M3 - Article
AN - SCOPUS:23044506952
SN - 1029-8479
VL - 6
SP - 1151
EP - 1174
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 5
ER -