Probing the electroweak phase transition via enhanced di-Higgs boson production
Abstract
Here, we consider a singlet extension of the Standard Model (SM) with a spontaneous $$Z_2$$ breaking and study the gluon-gluon fusion production of the heavy scalar, with subsequent decay into a pair of SM-like Higgs bosons. We find that an on-shell interference effect can notably enhance the resonant di-Higgs production rate up to 40\%. In addition, consistently taking into account both the on-shell and off-shell interference effects between the heavy scalar and the SM di-Higgs diagrams significantly improves the HL-LHC and HE-LHC reach in this channel. As an example, within an effective field theory analysis in an explicitly $$Z_2$$ breaking scenario, we further discuss the potential to probe the parameter region compatible with a first order electroweak phase transition. Our analysis is applicable for general potentials of the singlet extension of the SM as well as for more general resonance searches.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1438968
- Alternate Identifier(s):
- OSTI ID: 1426670
- Report Number(s):
- FERMILAB-PUB-17-600-T; arXiv:1801.00794
Journal ID: ISSN 2470-0010; PRVDAQ; 095032
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 9; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Carena, Marcela, Liu, Zhen, and Riembau, Marc. Probing the electroweak phase transition via enhanced di-Higgs boson production. United States: N. p., 2018.
Web. doi:10.1103/PhysRevD.97.095032.
Carena, Marcela, Liu, Zhen, & Riembau, Marc. Probing the electroweak phase transition via enhanced di-Higgs boson production. United States. https://doi.org/10.1103/PhysRevD.97.095032
Carena, Marcela, Liu, Zhen, and Riembau, Marc. Thu .
"Probing the electroweak phase transition via enhanced di-Higgs boson production". United States. https://doi.org/10.1103/PhysRevD.97.095032.
@article{osti_1438968,
title = {Probing the electroweak phase transition via enhanced di-Higgs boson production},
author = {Carena, Marcela and Liu, Zhen and Riembau, Marc},
abstractNote = {Here, we consider a singlet extension of the Standard Model (SM) with a spontaneous $Z_2$ breaking and study the gluon-gluon fusion production of the heavy scalar, with subsequent decay into a pair of SM-like Higgs bosons. We find that an on-shell interference effect can notably enhance the resonant di-Higgs production rate up to 40\%. In addition, consistently taking into account both the on-shell and off-shell interference effects between the heavy scalar and the SM di-Higgs diagrams significantly improves the HL-LHC and HE-LHC reach in this channel. As an example, within an effective field theory analysis in an explicitly $Z_2$ breaking scenario, we further discuss the potential to probe the parameter region compatible with a first order electroweak phase transition. Our analysis is applicable for general potentials of the singlet extension of the SM as well as for more general resonance searches.},
doi = {10.1103/PhysRevD.97.095032},
journal = {Physical Review D},
number = 9,
volume = 97,
place = {United States},
year = {Thu May 24 00:00:00 EDT 2018},
month = {Thu May 24 00:00:00 EDT 2018}
}
https://doi.org/10.1103/PhysRevD.97.095032
Web of Science
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Works referencing / citing this record:
Probing the electroweak phase transition via enhanced di-Higgs boson production
text, January 2018
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