Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM

Vieu, Thibault; Morais, A.; Pasechnik, Roman

doi:10.1088/1475-7516/2018/07/014

Cited by 20 publications

(30 citation statements)

References 97 publications

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“…In the finite temperature effective potential V T =0 1−loop we include the temperature corrected terms to the boson masses by following Daisy resummation method [136]. In the Daisy resummation method the thermal masses are [137], [138][139][140]…”

Section: A Finite Temperature Effective Potentialmentioning

confidence: 99%

Singlet-doublet fermionic dark matter and gravitational waves in a two-Higgs-doublet extension of the Standard Model

2020

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We present a study of singlet-doublet vector-like leptonic dark matter (DM) in the framework of two Higgs doublet model (2HDM), where the dark sector is comprised of one doublet and one singlet vectorlike fermions (VLFs). The DM, that arises as an admixture of the neutral components of the VLFs, is stabilized by an imposed discrete symmetry Z 2 . We test the viability of the DM candidate in the light of observations from PLANCK and recent limits on spin-independent direct detection experiments, and search for its possible collider signals. In addition, we also look for the stochastic gravitational wave (GW) signatures resulting from strong first order phase transition due to the presence of the second Higgs doublet. The model thus offers a viable parameter space for a stable DM candidate that can be probed from direct search, collider and GW experiments.

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Section: A Finite Temperature Effective Potentialmentioning

confidence: 99%

Singlet-doublet fermionic dark matter and gravitational waves in a two-Higgs-doublet extension of the Standard Model

2020

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“…There is no possibility to engineer a first-order phase transition. The only alternative second step, which could potentially be first-order [48], would be…”

Section: Phase Transitionmentioning

confidence: 99%

Phase transitions and gravitational wave tests of pseudo-Goldstone dark matter in the softly broken U(1) scalar singlet model

Kannike

Raidal

2019

Phys. Rev. D

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We study phase transitions in a softly broken U (1) complex singlet scalar model in which the dark matter is the pseudo-scalar part of a singlet whose direct detection coupling to matter is strongly suppressed. Our aim is to find ways to test this model with the stochastic gravitational wave background from the scalar phase transition. We find that the phase transition which induces vacuum expectation values for both the Higgs boson and the singlet -necessary to provide a realistic dark matter candidate -is always of the second order. If the stochastic gravitational wave background characteristic to a first order phase transition will be discovered by interferometers, the soft breaking of U (1) cannot be the explanation to the suppressed dark matter-baryon coupling, providing a conclusive negative test for this class of singlet models.

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“…In the Standard Model (SM) of particle physics, CP V is included through the introduction of a single irreducible complex phase in the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixing matrix [4,5]. The amount of CP V predicted by the CKM mechanism is not sufficient to explain a matter-dominated universe [6,7] and other sources of CP V are required. The realization of CP V in nature has been well established in the K -and B-meson systems by several experiments [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Search for CP violation in $${{{\varXi }} ^+_{c}} \rightarrow {p} {{K} ^-} {{\pi } ^+} $$ decays using model-independent techniques

et al. 2020

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A first search for $$CP$$ CP violation in the Cabibbo-suppressed $${{{\varXi }} ^+_{c}} \rightarrow {p} {{K} ^-} {{\pi } ^+} $$ Ξ c + → p K - π + decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of $$3.0\,\text {fb} ^{-1} $$ 3.0 fb - 1 , and collected by the LHCb experiment at centre-of-mass energies of 7 and $$8\,\text {TeV} $$ 8 TeV . The data are consistent with the hypothesis of no $$CP$$ CP violation.

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Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM

Cited by 20 publications

References 97 publications

Singlet-doublet fermionic dark matter and gravitational waves in a two-Higgs-doublet extension of the Standard Model

Singlet-doublet fermionic dark matter and gravitational waves in a two-Higgs-doublet extension of the Standard Model

Phase transitions and gravitational wave tests of pseudo-Goldstone dark matter in the softly broken U(1) scalar singlet model

Search for CP violation in $${{{\varXi }} ^+_{c}} \rightarrow {p} {{K} ^-} {{\pi } ^+} $$ decays using model-independent techniques

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