Basler, P., Dawson, S., Englert, C. and Muhlleitner, M. (2020) Di-Higgs boson peaks and top valleys: Interference effects in Higgs sector extensions. Physical Review D, 101, 015019. (doi: 10.1103/PhysRevD.101.015019)
|
Text
207452.pdf - Published Version Available under License Creative Commons Attribution. 763kB |
Abstract
In models with extended scalars and CP violation, resonance searches in double Higgs final states stand in competition with related searches in top quark final states as optimal channels for the discovery of beyond the Standard Model (BSM) physics. This complementarity is particularly relevant for benchmark scenarios that aim to highlight multi-Higgs production as a standard candle for the study of BSM phenomena. In this paper, we compare interference effects in t¯t final states with correlated phenomena in double Higgs production in the complex singlet and the complex two-Higgs-doublet models. Our results indicate that the BSM discovery potential in di-Higgs searches can be underestimated in comparison to t¯t resonance searches. Top pair final states are typically suppressed due to destructive signal-background interference, while hh final states can be enhanced due to signal-signal interference. For parameter choices where the two heavy Higgs resonances are well separated in mass, top final states are suppressed relative to the naive signal expectation, while estimates of the production cross section times branching ratio remain accurate at the O(10%) level for double Higgs final states.
| Item Type: | Articles |
|---|---|
| Additional Information: | P. B. acknowledges financial support by the Graduiertenkolleg GRK 1694: Elementarteilchenphysik bei höchster Energie und höchster Präzision. M. M. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Grant No. 396021762—TRR 257. S. D. is supported by the U.S. Department of Energy under Grant No. de-sc0012704. C. E. is supported by the UK Science and Technology Facilities Council (STFC) under Grant No. ST/P000746/1. This work was supported by the Munich Institute for Astro- and Particle Physics (MIAPP) of the DFG Excellence Cluster Origins (www.origins-cluster.de). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Englert, Professor Christoph |
| Authors: | Basler, P., Dawson, S., Englert, C., and Muhlleitner, M. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review D |
| Publisher: | American Physical Society |
| ISSN: | 2470-0010 |
| ISSN (Online): | 2470-0029 |
| Published Online: | 28 January 2020 |
| Copyright Holders: | Copyright © 2020 American Physical Society |
| First Published: | First published in Physical Review D 101:015019 |
| Publisher Policy: | Reproduced under a Creative Commons license |
University Staff: Request a correction | Enlighten Editors: Update this record
Funder and Project Information
Funder and Project Information