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000643453 0247_ $$2arXiv$$aarXiv:2506.18555
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000643453 088__ $$2arXiv$$aarXiv:2506.18555
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000643453 245__ $$aZ and Higgs factory implications of two Higgs doublets with first-order phase transitions
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000643453 500__ $$aJ. High Energ. Phys. 2025, 179 (2025)
000643453 520__ $$aWe investigate the potential of future electron-positron colliders, such as FCC-ee and CEPC, to probe 2-Higgs-doublet models (2HDMs) that facilitate a strong first-order electroweak phase transition (SFOEWPT), a necessary condition for electroweak baryogenesis. Focusing on a 2HDM in the CP-conserving limit, we identify parameter regions consistent with an SFOEWPT and evaluate their compatibility with projected precision electroweak and Higgs measurements, as well as searches for exotic Higgs bosons. We show that radiative corrections to e$^{+}$e$^{−}$ → hZ production introduce deviations in the cross section that are resolvable with the anticipated sub-percent precision at lepton colliders even when experimental outcomes of the LHC and Z pole measurements are in agreement with the SM. This underscores the opportunities of a precision lepton collider to explore BSM quantum corrections to the Higgs sector more broadly.
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000643453 536__ $$0G:(GEPRIS)396021762$$aDFG project G:(GEPRIS)396021762 - TRR 257: Phänomenologische Elementarteilchenphysik nach der Higgs-Entdeckung (396021762)$$c396021762$$x3
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000643453 650_7 $$2autogen$$aElectroweak Precision Physics
000643453 650_7 $$2autogen$$aMulti-Higgs Models
000643453 650_7 $$2autogen$$aPhase Transitions in the Early Universe
000643453 693__ $$0EXP:(DE-MLZ)NOSPEC-20140101$$5EXP:(DE-MLZ)NOSPEC-20140101$$eNo specific instrument$$x0
000643453 7001_ $$0P:(DE-H253)PIP1112927$$aArco, Francisco$$b1
000643453 7001_ $$00000-0002-1140-4073$$aDi Noi, Stefano$$b2$$eCorresponding author
000643453 7001_ $$00000-0003-2201-0667$$aEnglert, Christoph$$b3
000643453 7001_ $$00000-0003-3922-0281$$aMühlleitner, Margarete$$b4
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000643453 9141_ $$y2025
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