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@ARTICLE{Catumba:642192,
author = {Catumba, Guilherme and Hiraguchi, Atsuki and Hou, Wei-Shu
and Jansen, Karl and Kao, Ying-Jer and Lin, C.-J. David and
Ramos, Alberto and Sarkar, Mugdha},
title = {{L}attice investigation of custodial two-{H}iggs-doublet
model at weak quartic couplings},
journal = {Journal of high energy physics},
volume = {10},
number = {10},
issn = {1126-6708},
address = {Heidelberg},
publisher = {Springer},
reportid = {PUBDB-2025-05388, arXiv:2507.07759},
pages = {214},
year = {2025},
note = {cc-by, 28 pages, 13 figures. v2: edit to match published
version},
abstract = {The SU(2)–gauged custodial two-Higgs-doublet model, which
shares the same global-symmetry properties with the standard
model, is studied non-perturbatively on the lattice. The
additional Higgs doublet enlarges the scalar spectrum and
opens the possibility for spontaneous breaking of the global
symmetry. In this work we start by showing the occurrence of
spontaneous breaking of the custodial symmetry in a region
of the parameter space of the model. Following this, both
the spectrum and the running of the gauge coupling of are
examined at weak quartic couplings in the presence of the
custodial symmetry. The calculations are performed with
energy cutoffs ranging from 300 to 600 GeV on a line of
constant standard model physics, obtained by tuning bare
couplings to fix the ratio between the masses of the Higgs
and the W bosons, as well as the value of the renormalized
gauge coupling at the scale of the W boson mass. The
realizable masses for the additional scalar states are
explored. For the choice of bare quartic couplings in this
work, the estimated lower bound of these masses is found to
be well below the W boson mass, and independent of the
cutoff. We also study the finite temperature electroweak
transition along this line of constant standard model
physics, revealing properties of a smooth crossover
behavior.},
keywords = {Multi-Higgs Models (autogen) / Other Lattice Field Theories
(autogen) / Phase Transitions (autogen)},
cin = {CQTA},
ddc = {530},
cid = {I:(DE-H253)CQTA-20221102},
pnm = {611 - Fundamental Particles and Forces (POF4-611)},
pid = {G:(DE-HGF)POF4-611},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
eprint = {2507.07759},
howpublished = {arXiv:2507.07759},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2507.07759;\%\%$},
doi = {10.1007/JHEP10(2025)214},
url = {https://bib-pubdb1.desy.de/record/642192},
}