Probing the Electroweak Phase Transition with Exotic Higgs Decays

Carena, Marcela; Kozaczuk, Jonathan; Liu, Zhen; Ou, Tong; Ramsey-Musolf, Michael J.; Shelton, Jessie; Wang, Yikun; Xie, Ke-Pan

doi:10.48550/arxiv.2203.08206

Cited by 4 publications

(4 citation statements)

References 22 publications

(51 reference statements)

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“…We also refer the reader to a related discussion in [13]. After this short overview on current constraints, we now show an example of the allowed parameter space in a model with two additional singlets, the two real scalar extension studied in [10].…”

Section: Models 21 Singlet Extensionsmentioning

confidence: 99%

A Short Overview on Low Mass Scalars at Future Lepton Colliders

Robens

2022

Universe

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In this manuscript, I give a short summary on scenarios with new physics scalars that could be investigated at future e+e− colliders. I concentrate on cases where at least one of the additional scalars has a mass below 125 GeV, and discuss both models where this could be realized, as well as studies which focus on such scenarios. This work is based on several overview talks I recently gave at the CEPC workshop, FCC week and ECFA future collider workshop, as well as a Snowmass White Paper.

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Section: Models 21 Singlet Extensionsmentioning

confidence: 99%

A Short Overview on Low Mass Scalars at Future Lepton Colliders

Robens

2022

Universe

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“…[6]. Beyond Higgs coupling precision, the lepton collider Higgs program also provides intriguing opportunities in probing Higgs exotic decays [22,23], complementary to the hadron collider program [24,25].…”

Section: Lepton Colliders: Sub-tev Casementioning

confidence: 99%

Physics at Future Colliders: the Interplay Between Energy and Luminosity

Liu¹,

Wang²

2022

Preprint

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In this note, as an input to the Snowmass studies, we provide a broad-brush picture of the physics output of future colliders as a function of their center of mass energies and luminosities. Instead of relying on precise projections of physics reaches, which are lacking in many cases, we mainly focused on simple benchmarks of physics yields, such as the number of Higgs boson produced. More detailed considerations for lepton colliders are given since there have been various recent proposals. A brief summary for hadron colliders based on a simple scaling estimate of the physics reaches is also included.

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“…It can manifest through shifts in the Higgs cubic coupling, but could still occur without any currently or far future measurable deviation in this coupling [45][46][47]. Deviations in all types of observables are also possibly correlated with the phase transition, including exotic Higgs decays [48].…”

Section: What Can We Learn About Bsm Physics From Higgs Physicsmentioning

confidence: 99%

The Future of US Particle Physics: The Energy Frontier Report – 2021 US Community Study on the Future of Particle Physics

Reina¹,

Tricoli²,

Begel³

et al. 2022

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The Energy Frontier (EF) aims at investigating the fundamental physics of the Universe at the highest energies or -equivalently -the shortest timescales after the Big Bang. We investigate open questions and explore the unknown using various probes to discover and characterize the nature of new physics, through the breadth and multitude of collider physics signatures. While the naturalness principle suggests new physics to lie at mass scales close to the electroweak scale, in many cases direct searches for specific models have placed strong bounds around 1-2 TeV. Thus, the energy frontier has moved beyond the TeV scale and the exploration of the 10 TeV scale becomes crucial to shed light on physics beyond the Standard Model (SM).We need to use both energy reach and precision measurements to push beyond the 1 TeV scale in our exploration. The quest for new physics will be thus conducted in a two-tier approach: 1) looking for indirect evidence of beyond-the-Standard-Model physics (BSM) through precision measurements of the properties of the Higgs boson and other SM particles, and 2) searching for direct evidence of BSM physics at the energy frontier, reaching multi-TeV scales.The EF currently has a top-notch program with the LHC and the High Luminosity LHC (HL-LHC) at CERN, which sets the basis for the EF vision. The EF supports continued strong US participation in the success of the LHC, and the HL-LHC construction, operations, computing and software, and most importantly in the physics research programs, including auxiliary experiments.The discussions on projects that extend the reach of the HL-LHC underlined that preparations for the next collider experiments have to start now to maintain and strengthen the vitality and motivation of the community. Colliders are the ultimate tool to carry out such a program thanks to the broad and complementary set of measurements and searches they enable. Several projects have been proposed such as ILC, CLIC, FCC-ee, CEPC, Cool Copper Collider (C 3 ) or HELEN for e + e − Higgs Factories, and CLIC at 3 TeV centre-of-mass energy, FCC-hh, SPPC and Muon Collider for multi-TeV colliders. For a detailed discussion of timeline, cost, challenges of those accelerator projects we refer to the Accelerator Frontier Integration Task-Force (ITF) report [1] and Appendix A.3. Dedicated fora were established across frontiers to bring together diverse expertise in the study of future e + e − and µ + µ − colliders. Results from their studies are available in their reports [2, 3] and have informed the studies presented in this report.All proposed collider physics experiments need complex detectors as well as software and computing infrastructure, with cutting-edge technologies to meet their ambitious physics goals. The needs extend beyond generic R&D. Experience from R&D and building previous experiments informs us that it takes about 10 years from CD-0 (Critical Decision -0) to the end of construction of a collider detector. For e + e − Higgs factories, immediate investment in targeted detector R&...

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Probing the Electroweak Phase Transition with Exotic Higgs Decays

Cited by 4 publications

References 22 publications

A Short Overview on Low Mass Scalars at Future Lepton Colliders

A Short Overview on Low Mass Scalars at Future Lepton Colliders

Physics at Future Colliders: the Interplay Between Energy and Luminosity

The Future of US Particle Physics: The Energy Frontier Report – 2021 US Community Study on the Future of Particle Physics

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