Refining gravitational wave and collider physics dialogue via singlet scalar extension
6 affiliations
- 1California Institute of Technology
- 2Shanghai Jiao Tong University
- 3University of Massachusetts
- 4University of Helsinki
- 5Institute of Physics, Academia Sinica
- 6Phenikaa University
Abstract
A bstract Employing effective field theory techniques, we advance computations of thermal parameters that enter predictions for the gravitational wave spectra from first-order electroweak phase transitions. Working with the real-singlet-extended Standard Model, we utilize recent lattice simulations to confirm the existence of first-order phase transitions across the free parameter space. For the first time, we account for several important two-loop corrections in the high-temperature expansion for determining thermal parameters, including the bubble wall velocity in the local thermal equilibrium approximation. We find that the requirement of completing bubble nucleation imposes stringent bounds on the new scalar boson mass. Moreover, the prospects for detection by LISA require first-order phase transitions in a two-step phase transition, which display strong sensitivity to the portal coupling between the Higgs and the singlet. Interestingly, signals from di-Higgs boson production at the HL-LHC probe parameter regions that significantly overlap with the LISA-sensitive region, indicating the possibility of accounting for both signals if detected. Conversely, depending on the mixing angle, a null result for di-Higgs production at the HL-LHC could potentially rule out the model as an explanation for gravitational wave observations.
Related
- Cosmological Gravitational Wave Collider Physics
- Chebyshev approximations of Feynman integrals for collider physics
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- Precision physics at the muon collider: mW and CKM matrix elements
BibTeX
@article{musolf2026refining,
title = {{Refining gravitational wave and collider physics dialogue via singlet scalar extension}},
author = {M. J. Musolf and Tuomas V. I. Tenkanen and Van Que Tran},
journal = {Journal of High Energy Physics},
year = {2026},
month = sep,
doi = {10.1007/jhep09(2026)260},
url = {https://doi.org/10.1007/jhep09(2026)260},
note = {CC BY},
}
RIS
TY - JOUR
TI - Refining gravitational wave and collider physics dialogue via singlet scalar extension
AU - M. J. Musolf
AU - Tuomas V. I. Tenkanen
AU - Van Que Tran
PY - 2026
DA - 2026/09/25
JO - Journal of High Energy Physics
DO - 10.1007/jhep09(2026)260
UR - https://doi.org/10.1007/jhep09(2026)260
AB - A bstract Employing effective field theory techniques, we advance computations of thermal parameters that enter predictions for the gravitational wave spectra from first-order electroweak phase transitions. Working with the real-singlet-extended Standard Model, we utilize recent lattice simulations to confirm the existence of first-order phase transitions across the free parameter space. For the first time, we account for several important two-loop corrections in the high-temperature expansion for determining thermal parameters, including the bubble wall velocity in the local thermal equilibrium approximation. We find that the requirement of completing bubble nucleation imposes stringent bounds on the new scalar boson mass. Moreover, the prospects for detection by LISA require first-order phase transitions in a two-step phase transition, which display strong sensitivity to the portal coupling between the Higgs and the singlet. Interestingly, signals from di-Higgs boson production at the HL-LHC probe parameter regions that significantly overlap with the LISA-sensitive region, indicating the possibility of accounting for both signals if detected. Conversely, depending on the mixing angle, a null result for di-Higgs production at the HL-LHC could potentially rule out the model as an explanation for gravitational wave observations.
SN - 1029-8479
SN - 1126-6708
SN - 1127-2236
ER -