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Measuring rare and exclusive Higgs boson decays into light resonances

Chisholm, Andrew S.; Kuttimalai, Silvan; Nikolopoulos, Konstantinos; Spannowsky, Michael

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Andrew S. Chisholm

Silvan Kuttimalai

Konstantinos Nikolopoulos


We evaluate the LHC’s potential of observing Higgs boson decays into light elementary or composite resonances through their hadronic decay channels. We focus on the Higgs boson production processes with the largest cross sections, pp→h pp→h and pp→h+jet pp→h+jet , with subsequent decays h→ZA h→ZA or h→Zη c h→Zηc , and comment on the production process pp→hZ pp→hZ . By exploiting track-based jet substructure observables and extrapolating to 3000 fb −1 3000 fb−1 we find BR(h→ZA)≃BR(h→Zη c )≲0.02 BR(h→ZA)≃BR(h→Zηc)≲0.02 at 95 % CL. We interpret this limit in terms of the 2HDM Type 1. We find that searches for h→ZA h→ZA are complementary to existing measurements and can constrain large parts of the currently allowed parameter space.


Chisholm, A. S., Kuttimalai, S., Nikolopoulos, K., & Spannowsky, M. (2016). Measuring rare and exclusive Higgs boson decays into light resonances. The European Physical Journal C, 76(9), Article 501.

Journal Article Type Article
Acceptance Date Aug 29, 2016
Online Publication Date Sep 14, 2016
Publication Date Sep 14, 2016
Deposit Date Nov 10, 2016
Publicly Available Date Feb 1, 2017
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 76
Issue 9
Article Number 501


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Copyright Statement
© The Author(s) 2016 Open Access 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. Funded by SCOAP3.

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