Selecting supersymmetric string scenarios from sparticle spectra

Allanach, B.C.; Grellscheid, D.; Quevedo, F.

Abstract

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.

Citation

Allanach, B., Grellscheid, D., & Quevedo, F. (2002). Selecting supersymmetric string scenarios from sparticle spectra. Journal of High Energy Physics, 2002(05), Article 048. https://doi.org/10.1088/1126-6708/2002/05/048

• Journal Article Type: Article
• Publication Date: Jan 1, 2002
• Deposit Date: Feb 6, 2014
• Publicly Available Date: Feb 25, 2015
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2002
• Issue: 05
• Article Number: 048
• DOI: https://doi.org/10.1088/1126-6708/2002/05/048
• Keywords: Supersymmetry breaking; Beyond standard model; Supersymmetric standard model.
• Public URL: https://durham-repository.worktribe.com/output/1469185