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Complex Scalar Singlet Model Benchmarks for Snowmass

2022/03/14 by Shekhar Adhikari, Samuel D. Lane, Adhikari, Shekhar +7 · 1 citation
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Distributed and Parallel Computing Systems #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #hep-ex #hep-ph

paper · pdf · doi:10.48550/arxiv.2203.07455

contribution to Snowmass 2021, 13 pages, 2 figures

arxiv created 2022/03/14 · openalex publication_date 2022/03/14 · arxiv updated 2022/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this contribution to Snowmass 2021, we present benchmark parameters for the general complex scalar singlet model. The complex scalar singlet extension has three massive scalar states with interesting decay chains which will depend on the exact mass hierarchy of the system. We find maximum branching ratios for resonant double Standard Model-like Higgs production, resonant production of a Standard Model-like Higgs and a new scalar, and double resonant new scalar production. These branching ratios are between 0.7 and 1. This is particularly interesting because instead of direct production, the main production of a new scalar resonance may be from the s-channel production and decay of another scalar resonance. That is, it is still possible for discovery of new scalar resonances to be from the cascade of one resonance to another. We choose our benchmark points to have to have a large range of signatures: multi-b production, multi-W and Z production, and multi-125 GeV SM-like Higgs production. These benchmark points can provide various spectacular signatures that are consistent with current experimental and theoretical bounds. This is a summary of results in Ref. [1].

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