Measuring rare and exclusive Higgs boson decays into light resonances

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

Abstract

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.

Citation

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. https://doi.org/10.1140/epjc/s10052-016-4345-9

• 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
• DOI: https://doi.org/10.1140/epjc/s10052-016-4345-9
• Public URL: https://durham-repository.worktribe.com/output/1370484