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000643367 005__ 20260111053245.0
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000643367 0247_ $$2arXiv$$aarXiv:2507.07759
000643367 0247_ $$2datacite_doi$$a10.3204/PUBDB-2026-00151
000643367 037__ $$aPUBDB-2026-00151
000643367 041__ $$aEnglish
000643367 082__ $$a530
000643367 088__ $$2arXiv$$aarXiv:2507.07759
000643367 1001_ $$0P:(DE-HGF)0$$aCatumba, Guilherme$$b0$$eCorresponding author
000643367 245__ $$aLattice investigation of custodial two-Higgs-doublet model at weak quartic couplings
000643367 260__ $$c2025
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000643367 500__ $$a28 pages, 13 figures. v2: edit to match published version
000643367 520__ $$aThe SU(2)–gauged custodial two-Higgs-doublet model, which shares the same global-symmetry properties with the standard model, is studied non-perturbatively on the lattice. The additional Higgs doublet enlarges the scalar spectrum and opens the possibility for spontaneous breaking of the global symmetry. In this work we start by showing the occurrence of spontaneous breaking of the custodial symmetry in a region of the parameter space of the model. Following this, both the spectrum and the running of the gauge coupling of are examined at weak quartic couplings in the presence of the custodial symmetry. The calculations are performed with energy cutoffs ranging from 300 to 600 GeV on a line of constant standard model physics, obtained by tuning bare couplings to fix the ratio between the masses of the Higgs and the W bosons, as well as the value of the renormalized gauge coupling at the scale of the W boson mass. The realizable masses for the additional scalar states are explored. For the choice of bare quartic couplings in this work, the estimated lower bound of these masses is found to be well below the W boson mass, and independent of the cutoff. We also study the finite temperature electroweak transition along this line of constant standard model physics, revealing properties of a smooth crossover behavior.
000643367 536__ $$0G:(DE-HGF)POF4-611$$a611 - Fundamental Particles and Forces (POF4-611)$$cPOF4-611$$fPOF IV$$x0
000643367 536__ $$0G:(EU-Grant)101087126$$aQUEST - QUantum computing for Excellence in Science and Technology (101087126)$$c101087126$$fHORIZON-WIDERA-2022-TALENTS-01$$x1
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000643367 650_7 $$2autogen$$aMulti-Higgs Models
000643367 650_7 $$2autogen$$aOther Lattice Field Theories
000643367 650_7 $$2autogen$$aPhase Transitions
000643367 693__ $$0EXP:(DE-MLZ)NOSPEC-20140101$$5EXP:(DE-MLZ)NOSPEC-20140101$$eNo specific instrument$$x0
000643367 7001_ $$00000-0003-1522-5803$$aHiraguchi, Atsuki$$b1
000643367 7001_ $$aHou, Wei-Shu$$b2
000643367 7001_ $$0P:(DE-H253)PIP1003636$$aJansen, Karl$$b3
000643367 7001_ $$00000-0002-3329-6018$$aKao, Ying-Jer$$b4
000643367 7001_ $$aLin, C.-J. David$$b5
000643367 7001_ $$aRamos, Alberto$$b6
000643367 7001_ $$00000-0002-3494-7249$$aSarkar, Mugdha$$b7
000643367 8564_ $$uhttps://bib-pubdb1.desy.de/record/643367/files/2507.07759v2.pdf$$yOpenAccess
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000643367 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1003636$$aDeutsches Elektronen-Synchrotron$$b3$$kDESY
000643367 9131_ $$0G:(DE-HGF)POF4-611$$1G:(DE-HGF)POF4-610$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lMatter and the Universe$$vFundamental Particles and Forces$$x0
000643367 9141_ $$y2025
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