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순수물리이론 연구단
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Exotic decays of top partners: Mind the search gap

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Title
Exotic decays of top partners: Mind the search gap
Author(s)
GiacomoCacciapaglia; ThomasFlacke; MyeonghunPark; MengchaoZhang
Publication Date
2019-11
Journal
PHYSICS LETTERS B, v.798, no., pp.35015 -
Publisher
ELSEVIER SCIENCE BV
Abstract
© 2019 The Author(s)Many standard model extensions, including composite Goldstone Higgs models, predict vector-like fermionic top-partners at the TeV scale. The intensive search programmes by ATLAS and CMS focus on decays into a 3rd generation quark and an electroweak boson (W,Z,h). However, underlying models of partial compositeness contain additional states that give rise to exotic top partner decays. We consider a well-motivated scenario in which a charge-2/3 top-partner decays into a pseudo-scalar, T→ta, with a→gg or bb¯ dominating below the tt¯ threshold. We show that the constraints on the top partner mass from QCD pair production are substantially weakened, still allowing a top partner mass as light as 400 GeV
URI
https://pr.ibs.re.kr/handle/8788114/6814
ISSN
0370-2693
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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