TY - JOUR
T1 - Effects of two inert scalar doublets on Higgs boson interactions and the electroweak phase transition
AU - Ahriche, Amine
AU - Faisel, Gaber
AU - Ho, Shu Yu
AU - Nasri, Salah
AU - Tandean, Jusak
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/8/31
Y1 - 2015/8/31
N2 - We study some implications of the presence of two new scalar weak doublets beyond the standard model which have zero vacuum expectation values and are charged under an extra Abelian gauge symmetry. The additional gauge sector does not couple directly to standard-model particles. We investigate specifically the effects of the scalars on oblique electroweak parameters and on the interactions of the 125 GeV Higgs boson, especially its decay modes h→γγ,γZ and trilinear self-coupling, all of which will be probed with improved precision in future Higgs measurements. Moreover, we explore how the new scalars may give rise to strongly first-order electroweak phase transition and also show its correlation with sizable modifications to the Higgs trilinear self-coupling.
AB - We study some implications of the presence of two new scalar weak doublets beyond the standard model which have zero vacuum expectation values and are charged under an extra Abelian gauge symmetry. The additional gauge sector does not couple directly to standard-model particles. We investigate specifically the effects of the scalars on oblique electroweak parameters and on the interactions of the 125 GeV Higgs boson, especially its decay modes h→γγ,γZ and trilinear self-coupling, all of which will be probed with improved precision in future Higgs measurements. Moreover, we explore how the new scalars may give rise to strongly first-order electroweak phase transition and also show its correlation with sizable modifications to the Higgs trilinear self-coupling.
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U2 - 10.1103/PhysRevD.92.035020
DO - 10.1103/PhysRevD.92.035020
M3 - Article
AN - SCOPUS:84940868001
SN - 1550-7998
VL - 92
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 3
M1 - 035020
ER -