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Title: Off-Shell Higgs Probe of Naturalness

Abstract

Examining the Higgs sector at high energy scales through off-shell Higgs production can potentially shed light on the naturalness problem of the Higgs boson mass. We propose such a study at the LHC by utilizing a representative model with a new scalar field ( S ) coupled to the standard model Higgs doublet (H) in a form |S| 2|H| 2 . In the process pp → h * → ZZ , the dominant momentum-dependent part of the one-loop scalar singlet corrections, especially above the new threshold at 2m S, leads to a measurable deviation in the differential distribution of the Z -pair invariant mass, in accordance with the quadratic divergence cancellation to the Higgs mass. We find that it is conceivable to probe such new physics at the 5σ level at the high-luminosity LHC, improving further with the upgraded 27 TeV LHC, without requiring the precise measurement of the Higgs boson total width. Accordingly, the discovery of such a Higgs portal could also have important implications for thermal dark matter as well as for electroweak baryogenesis.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1426337
Alternate Identifier(s):
OSTI ID: 1498987
Grant/Contract Number:  
FG02-95ER40896
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 120 Journal Issue: 11; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Gonçalves, Dorival, Han, Tao, and Mukhopadhyay, Satyanarayan. Off-Shell Higgs Probe of Naturalness. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.111801.
Gonçalves, Dorival, Han, Tao, & Mukhopadhyay, Satyanarayan. Off-Shell Higgs Probe of Naturalness. United States. doi:10.1103/PhysRevLett.120.111801.
Gonçalves, Dorival, Han, Tao, and Mukhopadhyay, Satyanarayan. Thu . "Off-Shell Higgs Probe of Naturalness". United States. doi:10.1103/PhysRevLett.120.111801.
@article{osti_1426337,
title = {Off-Shell Higgs Probe of Naturalness},
author = {Gonçalves, Dorival and Han, Tao and Mukhopadhyay, Satyanarayan},
abstractNote = {Examining the Higgs sector at high energy scales through off-shell Higgs production can potentially shed light on the naturalness problem of the Higgs boson mass. We propose such a study at the LHC by utilizing a representative model with a new scalar field ( S ) coupled to the standard model Higgs doublet (H) in a form |S|2|H|2 . In the process pp → h * → ZZ , the dominant momentum-dependent part of the one-loop scalar singlet corrections, especially above the new threshold at 2mS, leads to a measurable deviation in the differential distribution of the Z -pair invariant mass, in accordance with the quadratic divergence cancellation to the Higgs mass. We find that it is conceivable to probe such new physics at the 5σ level at the high-luminosity LHC, improving further with the upgraded 27 TeV LHC, without requiring the precise measurement of the Higgs boson total width. Accordingly, the discovery of such a Higgs portal could also have important implications for thermal dark matter as well as for electroweak baryogenesis.},
doi = {10.1103/PhysRevLett.120.111801},
journal = {Physical Review Letters},
number = 11,
volume = 120,
place = {United States},
year = {2018},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevLett.120.111801

Citation Metrics:
Cited by: 7 works
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Figures / Tables:

Figure 1 Figure 1: Representative set of Feynman diagrams for the oneloop corrections to $gg$ → ZZ production, in the SM augmented by a gauge singlet scalar.

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