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Top quark FCNCs in extended Higgs sectors

Banerjee, Shankha; Chala, Mikael; Spannowsky, Michael

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Shankha Banerjee

Mikael Chala


The large number of top quarks produced at the LHC and possible future hadron colliders allows to study rare decays of this particle. In many well motivated models of new physics, for example in non-minimal compositeHiggs models, the existence of scalar singlets can induce new flavor-violating top decays surpassing the Higgs contribution by orders of magnitude. We study the discovery prospects of rare top decays within such models and develop new search strategies to test these interactions in top pairproduced events at the LHC. We demonstrate that scales as large as 10–50 TeV can be probed. Improvements by factors of ∼ 1.5 and ∼ 3 can be obtained at √s = 27 TeV and √s = 100 TeV colliders respectively.


Banerjee, S., Chala, M., & Spannowsky, M. (2018). Top quark FCNCs in extended Higgs sectors. The European Physical Journal C, 78(8), Article 683.

Journal Article Type Article
Acceptance Date Aug 10, 2018
Online Publication Date Aug 27, 2018
Publication Date Aug 27, 2018
Deposit Date Sep 6, 2018
Publicly Available Date Sep 6, 2018
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 78
Issue 8
Article Number 683


Published Journal Article (747 Kb)

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Copyright Statement
© The Author(s) 2018. <br /> This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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