Selecting supersymmetric string scenarios from sparticle spectra

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

doi:10.1088/1126-6708/2002/05/048

Selecting supersymmetric string scenarios from sparticle spectra

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

Authors

B.C. Allanach

D. Grellscheid

F. Quevedo

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
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.