‘Stop’ that ambulance! New physics at the LHC?

• Verfasst von: Kim, Jong Soo [VerfasserIn]
• Verfasst von: Tattersall, Jamie [VerfasserIn]
• Titel: ‘Stop’ that ambulance! New physics at the LHC?
• Verf.angabe: Jong Soo Kim, Krzysztof Rolbiecki, Kazuki Sakurai and Jamie Tattersall
• E-Jahr: 2014
• Jahr: 02 December 2014
• Umfang: 21 S.
• Fussnoten: Gesehen am 22.10.2020
• Titel Quelle: Enthalten in: Journal of high energy physics
• Ort Quelle: Berlin : Springer, 1997
• Jahr Quelle: 2014
• Band/Heft Quelle: (2014,12) Artikel-Nummer 10, 21 Seiten
• ISSN Quelle: 1029-8479
• DOI: doi:10.1007/JHEP12(2014)010
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1736249487

Abstract

A number of LHC searches now display intriguing excesses. Most prominently, the measurement of the W+W− cross-section has been consistently ∼ 20% higher than the theoretical prediction across both ATLAS and CMS for both 7 and 8 TeV runs. More recently, supersymmetric searches for final states containing two or three leptons have also seen more events than predicted in certain signal regions. We show that a supersymmetric model containing a light stop, winos and binos can consistently match the data. We perform a fit to all measurements and searches that may be sensitive to our model and find a reduction in the log-likelihood of 15.4 compared to the Standard Model which corresponds to 3.5-σ once the extra degrees of freedom in the fit are considered.