Tripling down on the W boson mass

Henning Bahl; Wen Han Chiu; Christina Gao; Lian-Tao Wang; Yi-Ming Zhong

doi:10.1140/epjc/s10052-022-10934-5

Tripling down on the W boson mass

Henning Bahl^*
, Wen Han Chiu
, Christina Gao
, Lian-Tao Wang
, Yi-Ming Zhong

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

25 Citations (Scopus)

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Abstract

A new precision measurement of the W boson mass has been announced by the CDF collaboration, which strongly deviates from the Standard Model prediction. In this article, we study the implications of this measurement on the parameter space of the SU(2)_L triplet extension (with hypercharge Y = 1) of the Standard Model Higgs sector, focusing on a limit where the new triplet is approximate Z₂-odd while the SM is Z₂-even. We study the compatibility of the triplet spectrum preferred by the W boson mass measured by the CDF-II experiment with other electroweak precision observables and Higgs precision data. We comprehensively consider the signals of new Higgs states at the LHC and highlighted the promising search channels. In addition, we also investigate the cosmological implications of the case in which the lightest new Higgs particle is either late decaying or cosmologically stable. © 2022, The Author(s).

Original language	English
Article number	944
Journal	European Physical Journal C
Volume	82
Issue number	10
Online published	25 Oct 2022
DOIs	https://doi.org/10.1140/epjc/s10052-022-10934-5
Publication status	Published - Oct 2022
Externally published	Yes

Funding

CG and YZ acknowledge the Aspen Center for Physics for its hospitality during the final phase of this study, which is supported by National Science Foundation Grant PHY-1607611. HB acknowledges support by the Alexander von Humboldt foundation. CG is supported by the DOE QuantISED program through the theory consortium “Intersections of QIS and Theoretical Particle Physics” at Fermilab. LTW is supported by the DOE Grant DE-SC0013642. YZ is supported by the Kavli Institute for Cosmological Physics at the University of Chicago through an endowment from the Kavli Foundation and its founder Fred Kavli.

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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title = "Tripling down on the W boson mass",

abstract = "A new precision measurement of the W boson mass has been announced by the CDF collaboration, which strongly deviates from the Standard Model prediction. In this article, we study the implications of this measurement on the parameter space of the SU(2)L triplet extension (with hypercharge Y = 1) of the Standard Model Higgs sector, focusing on a limit where the new triplet is approximate Z2-odd while the SM is Z2-even. We study the compatibility of the triplet spectrum preferred by the W boson mass measured by the CDF-II experiment with other electroweak precision observables and Higgs precision data. We comprehensively consider the signals of new Higgs states at the LHC and highlighted the promising search channels. In addition, we also investigate the cosmological implications of the case in which the lightest new Higgs particle is either late decaying or cosmologically stable. {\textcopyright} 2022, The Author(s).",

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AB - A new precision measurement of the W boson mass has been announced by the CDF collaboration, which strongly deviates from the Standard Model prediction. In this article, we study the implications of this measurement on the parameter space of the SU(2)L triplet extension (with hypercharge Y = 1) of the Standard Model Higgs sector, focusing on a limit where the new triplet is approximate Z2-odd while the SM is Z2-even. We study the compatibility of the triplet spectrum preferred by the W boson mass measured by the CDF-II experiment with other electroweak precision observables and Higgs precision data. We comprehensively consider the signals of new Higgs states at the LHC and highlighted the promising search channels. In addition, we also investigate the cosmological implications of the case in which the lightest new Higgs particle is either late decaying or cosmologically stable. © 2022, The Author(s).

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JO - European Physical Journal C

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Tripling down on the W boson mass

Abstract

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