Erratum for “2HDMC – two-Higgs-doublet model calculator” [Comput. Phys. Commun. 181 (2010) 189]

Eriksson, David; Rathsman, Johan; Stål, Oscar

doi:10.1016/j.cpc.2009.12.026

Cited by 128 publications

(164 citation statements)

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“…Theoretical predictions for cross-sections and branching ratios, taking into account relevant electroweak and QCD corrections, as well as its implementation in standard tools will be of utmost importance as experimental data becomes more precise, see for example Refs. [73][74][75][76] for some relevant works in this direction.…”

Section: Comparison With Other Workmentioning

confidence: 99%

Towards a general analysis of LHC data within two-Higgs-doublet models

Celis

Ilisie

Pich

2013

J. High Energ. Phys.

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The data accumulated so far confirm the Higgs-like nature of the new boson discovered at the LHC. The Standard Model Higgs hypothesis is compatible with the collider results and no significant deviations from the Standard Model have been observed neither in the flavour sector nor in electroweak precision observables. We update the LHC and Tevatron constraints on CP-conserving two-Higgs-doublet models without tree-level flavourchanging neutral currents. While the relative sign between the top Yukawa and the gauge coupling of the 126 GeV Higgs is found be the same as in the SM, at 90% CL, there is a sign degeneracy in the determination of its bottom and tau Yukawa couplings. This results in several disjoint allowed regions in the parameter space. We show how generic sum rules governing the scalar couplings determine the properties of the additional Higgs bosons in the different allowed regions. The role of electroweak precision observables, low-energy flavour constraints and LHC searches for additional scalars to further restrict the available parameter space is also discussed.

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Section: Comparison With Other Workmentioning

confidence: 99%

Towards a general analysis of LHC data within two-Higgs-doublet models

Celis

Ilisie

Pich

2013

J. High Energ. Phys.

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“…(5)- (9) and only allow those parameter points where the resulting values are below 4π. The exact value of this perturbativity constraint is somehow arbitrary (see for example the discussion in [37][38][39]). However, we have checked that it has no impact on our numerical results 7 .…”

Section: Phenomenological Analysismentioning

confidence: 99%

Explaining the CMS Higgs flavor-violating decay excess

Sierra

Vicente

2014

Phys. Rev. D

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Direct searches for lepton flavor violating Higgs boson decays in the τ µ channel have been recently reported by the CMS collaboration. The results display a slight excess of signal events with a significance of 2.5σ, which translates into a branching ratio of about 1%. By interpreting these findings as a hint for beyond the standard model physics, we show that the Type-III 2HDM is capable of reproducing such signal while at the same time satisfying boundedness from below of the scalar potential, perturbativity, electroweak precision data, measured Higgs standard decay modes and low-energy lepton flavor violating constraints. We have found that the allowed signal strength ranges for the bb, W W * and ZZ * standard channels shrink as soon as BR(h → τ µ) ∼ 1% is enforced. Thus, we point out that if the excess persists, improved measurements of these channels may be used to test our Type-III 2HDM scenario.

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“…Constraints on two doublet models are readily available [54] through the package 2HDMC. We observe the constraints of tree-level unitarity [55], perturbativity (i.e., the magnitudes of all the quartic Higgs couplings must be less than 4π), and the absence of runaway directions, as implemented in 2HDMC.…”

Section: A Methodsmentioning

confidence: 99%

Masses of a fourth generation with two Higgs doublets

et al. 2012

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We use sampling techniques to find robust constraints on the masses of a possible fourth sequential fermion generation from electroweak oblique variables. We find that in the case of a light (115 GeV) Higgs from a single electroweak symmetry breaking doublet, inverted mass hierarchies are possible for both quarks and leptons, but a mass splitting more than MW in the quark sector is unlikely. We also find constraints in the case of a heavy (600 GeV) Higgs in a single doublet model. As recent data from the Large Hadron Collider hints at the existence of a resonance at 124.5 GeV and a single Higgs doublet at that mass is inconsistent with a fourth fermion generation, we examine a type II two Higgs doublet model. In this model, there are ranges of parameter space where the Higgs sector can potentially counteract the effects of the fourth generation. Even so, we find that such scenarios produce qualitatively similar fermion mass distributions.

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Erratum for “2HDMC – two-Higgs-doublet model calculator” [Comput. Phys. Commun. 181 (2010) 189]

Cited by 128 publications

References 1 publication

Towards a general analysis of LHC data within two-Higgs-doublet models

Towards a general analysis of LHC data within two-Higgs-doublet models

Explaining the CMS Higgs flavor-violating decay excess

Masses of a fourth generation with two Higgs doublets

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