Signs of Tops from Highly Mixed Stops

Backović, Mihailo; Mariotti, Alberto; Spannowsky, Michael

Abstract

Supersymmetric extensions of the Standard Model with highly mixed squark flavours beyond minimal flavour violation provide interesting scenarios of new physics, which have so far received limited attention. We propose a calculable realization of such scenarios in models of gauge mediation augmented with an extra interaction between the messengers and the up type squark. We compute the supersymmetric spectrum and analyze the flavour physics constraints on such models. In a simplified model approach, we show that scenarios with maximal squark flavour mixing result in interesting phenomenological signatures at the LHC. We show that the model can be probed up to masses of mũ ≲ 950 GeV in the single-top event topology at LHC14 with as little as 300 fb−1. The most distinctive signature of highly mixed scenarios, the same sign positive charge di-top, can be also probed to comparable squark masses at high luminosity LHC14.

Citation

Backović, M., Mariotti, A., & Spannowsky, M. (2015). Signs of Tops from Highly Mixed Stops. Journal of High Energy Physics, 2015(06), Article 122. https://doi.org/10.1007/jhep06%282015%29122

• Journal Article Type: Article
• Acceptance Date: Jun 3, 2015
• Online Publication Date: Jun 17, 2015
• Publication Date: Jun 17, 2015
• Deposit Date: Nov 10, 2016
• Publicly Available Date: Mar 15, 2017
• 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: 2015
• Issue: 06
• Article Number: 122
• DOI: https://doi.org/10.1007/jhep06%282015%29122
• Public URL: https://durham-repository.worktribe.com/output/1401098