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Closing the window for compressed dark sectors with disappearing charged tracks

Mahbubani, R.; Schwaller, P.; Zurita, J.

Abstract:
We investigate the sensitivity at current and future hadron colliders to a heavy electrically-charged particle with a proper decay length below a centimetre, whose decay products are invisible due to below-threshold energies and/or small couplings to the Standard Model. A cosmologically-motivated example of a framework that contains such a particle is the Minimal Supersymmetric Standard Model in the limit of pure Higgsinos. The current hadron-collider search strategy has no sensitivity to the upper range of pure-Higgsino masses that are consistent with the thermal relic density, even at a future collider with 100 TeV centre-of-mass energy. We show that performing a disappearing track search within the inner 10 cm of detector volume would improve the reach in lifetime by a factor of 3 at the 14 TeV LHC and a further factor of 5 at a 100 TeV collider, resulting in around 10 events for 1.1 TeV thermal Higgsinos. In order to include the particles with the largest boost in the analysis, we furthermore propose a purely track-based search in both the central and forward regions, each of which would increase the number of events by another ... mehr


Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1007/JHEP06(2017)119
ISSN: 1029-8479, 1126-6708
URN: urn:nbn:de:swb:90-718329
KITopen ID: 1000071832
HGF-Programm 51.01.01; LK 01
Erschienen in Journal of high energy physics
Band 2017
Heft 6
Seiten 1–22
Lizenz CC BY 4.0: Creative Commons Namensnennung 4.0 International
Schlagworte Beyond Standard Model, Supersymmetric Standard Model
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