Quartic coupling unification in the maximally symmetric 2HDMCitation formats

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Quartic coupling unification in the maximally symmetric 2HDM. / Darvishi, Neda; Pilaftsis, Apostolos.

In: Physical Review D, Vol. 99, No. 11, 115014, 10.06.2019.

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Darvishi, Neda ; Pilaftsis, Apostolos. / Quartic coupling unification in the maximally symmetric 2HDM. In: Physical Review D. 2019 ; Vol. 99, No. 11.

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@article{92fb7f41415f48aba428e4277d6f9b56,
title = "Quartic coupling unification in the maximally symmetric 2HDM",
abstract = "We consider the maximally symmetric two-Higgs doublet model (MS-2HDM) in which the so-called Standard Model (SM) alignment can be naturally realized as a consequence of an accidental SO(5) symmetry in the Higgs sector. This symmetry is broken (i) explicitly by renormalization-group (RG) effects and (ii) softly by the bilinear scalar mass term m122. We find that in the MS-2HDM all quartic couplings can unify at large RG scales μX∼1011-1020 GeV. In particular, we show that quartic coupling unification can take place in two different conformally invariant points, where all quartic couplings vanish. We perform a vacuum stability analysis of the model in order to ensure that the electroweak vacuum is sufficiently long-lived. The MS-2HDM is a minimal and very predictive extension of the SM governed by only three additional parameters: the unification scale μX, the charged Higgs mass Mh± (or m122), and tanβ, which allow one to determine the entire Higgs sector of the model. In terms of these input parameters, we present illustrative predictions of misalignment for the SM-like Higgs-boson couplings to the W± and Z bosons and, for the first time to our knowledge, to the top and bottom quarks.",
author = "Neda Darvishi and Apostolos Pilaftsis",
year = "2019",
month = jun,
day = "10",
doi = "10.1103/PhysRevD.99.115014",
language = "English",
volume = "99",
journal = "Physical Review D: Particles, Fields, Gravitation and Cosmology",
issn = "1550-7998",
publisher = "American Institute of Physics",
number = "11",

}

RIS

TY - JOUR

T1 - Quartic coupling unification in the maximally symmetric 2HDM

AU - Darvishi, Neda

AU - Pilaftsis, Apostolos

PY - 2019/6/10

Y1 - 2019/6/10

N2 - We consider the maximally symmetric two-Higgs doublet model (MS-2HDM) in which the so-called Standard Model (SM) alignment can be naturally realized as a consequence of an accidental SO(5) symmetry in the Higgs sector. This symmetry is broken (i) explicitly by renormalization-group (RG) effects and (ii) softly by the bilinear scalar mass term m122. We find that in the MS-2HDM all quartic couplings can unify at large RG scales μX∼1011-1020 GeV. In particular, we show that quartic coupling unification can take place in two different conformally invariant points, where all quartic couplings vanish. We perform a vacuum stability analysis of the model in order to ensure that the electroweak vacuum is sufficiently long-lived. The MS-2HDM is a minimal and very predictive extension of the SM governed by only three additional parameters: the unification scale μX, the charged Higgs mass Mh± (or m122), and tanβ, which allow one to determine the entire Higgs sector of the model. In terms of these input parameters, we present illustrative predictions of misalignment for the SM-like Higgs-boson couplings to the W± and Z bosons and, for the first time to our knowledge, to the top and bottom quarks.

AB - We consider the maximally symmetric two-Higgs doublet model (MS-2HDM) in which the so-called Standard Model (SM) alignment can be naturally realized as a consequence of an accidental SO(5) symmetry in the Higgs sector. This symmetry is broken (i) explicitly by renormalization-group (RG) effects and (ii) softly by the bilinear scalar mass term m122. We find that in the MS-2HDM all quartic couplings can unify at large RG scales μX∼1011-1020 GeV. In particular, we show that quartic coupling unification can take place in two different conformally invariant points, where all quartic couplings vanish. We perform a vacuum stability analysis of the model in order to ensure that the electroweak vacuum is sufficiently long-lived. The MS-2HDM is a minimal and very predictive extension of the SM governed by only three additional parameters: the unification scale μX, the charged Higgs mass Mh± (or m122), and tanβ, which allow one to determine the entire Higgs sector of the model. In terms of these input parameters, we present illustrative predictions of misalignment for the SM-like Higgs-boson couplings to the W± and Z bosons and, for the first time to our knowledge, to the top and bottom quarks.

UR - http://www.scopus.com/inward/record.url?scp=85068597930&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.99.115014

DO - 10.1103/PhysRevD.99.115014

M3 - Article

AN - SCOPUS:85068597930

VL - 99

JO - Physical Review D: Particles, Fields, Gravitation and Cosmology

JF - Physical Review D: Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 11

M1 - 115014

ER -