Di-Higgs boson peaks and top valleys: Interference effects in Higgs sector extensions

Basler, Philipp; Dawson, Sally; Englert, Christoph; Mühlleitner, Margarete

doi:10.1103/PhysRevD.101.015019

Title: Di-Higgs boson peaks and top valleys: Interference effects in Higgs sector extensions

Journal Article · 28 January 2020 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.101.015019 · OSTI ID:1595508

Basler, Philipp ^[1]; Dawson, Sally ^[2]; Englert, Christoph ^[3]; Mühlleitner, Margarete ^[1]

Karlsruhe Inst. of Technology (KIT) (Germany)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Univ. of Glasgow, Scotland (United Kingdom)

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 note, we compare interference effects in $$\bar{tt}$$ final states with correlated phenomena in double Higgs production in the complex singlet and the complex 2-Higgs-Doublet Models. Our results indicate that the BSM discovery potential in di-Higgs searches can be underestimated in comparison to $$\bar{tt}$$ 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.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0012704; ST-P000746-1; de-sc0012704

OSTI ID:: 1595508

Alternate ID(s):: OSTI ID: 1595685

Report Number(s):: BNL-213581-2020-JAAM; PRVDAQ; TRN: US2101067

Journal Information:: Physical Review D, Vol. 101, Issue 1; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 13 works

Citation information provided by
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