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Illuminating stealth scenarios at the LHC

Kim, Jong Soo; Krauss, Manuel E.; Martín Lozano, Víctor; Staub, Florian

Abstract (englisch):
Several ideas exist on how the stringent mass limits from LHC on new colored particles can be avoided. One idea are the so-called “stealth” scenarios in which missing transversal energy (ET) is avoided due a peculiar mass configuration. It is usually assumed that the cascade decay of the dominantly produced colored particle finishes in a two-body decay, where this mass configuration leads to a very small amount of ET. We discuss here the potential impact of other decay channels, either loop-induced or via off-shell mediators. It is shown that those channels already become important even for moderate branching ratios of 10%. Larger branching ratios, in particular, into a photon can completely wash out all benefits of the stealth setup. We discuss this in a model-independent form, but also at the simplest supersymmetry stealth scenario which can be realized in the next-to-minimal supersymmetric standard model.

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Verlagsausgabe §
DOI: 10.5445/IR/1000117471
Veröffentlicht am 02.03.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2470-0010, 2470-0029
KITopen-ID: 1000117471
HGF-Programm 51.03.03 (POF III, LK 01)
Kosmische Strahlung Auger
Erschienen in Physical review / D
Band 101
Heft 3
Seiten Article: 035033
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 25.02.2020
Nachgewiesen in Web of Science
arXiv
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