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The Higgs sector of models beyond the standard model requires special attention and study, since through them, a natural explanation can be offered to current questions such as the big differences in the values of the masses of the quarks…

High Energy Physics - Phenomenology · Physics 2012-01-19 S. R. Juarez W. , D. Morales C. , P. Kielanowski

Motivated by the possible 95 GeV diphoton excess, we investigate the capability of the Type-I Two-Higgs-Doublet Model (2HDM-I) to explain this signal under current theoretical and experimental constraints. Using full Monte Carlo (MC)…

High Energy Physics - Phenomenology · Physics 2026-03-03 Yabo Dong , Kun Wang , Jingya Zhu

We examine the parameter space of two-Higgs-doublet model of type-II after imposing the relevant theoretical and experimental constraints from the precision electroweak data, $B$-meson decays, the LHC run-I and run-II data. We find that the…

High Energy Physics - Phenomenology · Physics 2017-06-21 Lei Wang , Xiao-Fang Han

The Two-Higgs-doublet model (2HDM) is one of the most studied extensions of the Standard Model. Like the other popular "New Physics" models, it gets more and more constrained by recent experimental progress, especially by the LHC data. For…

High Energy Physics - Phenomenology · Physics 2017-09-28 Otto Eberhardt

We study the two-Higgs-doublet model with type-II seesaw mechanism. In view of constraints from the Higgs data, we consider the aligned two-Higgs-doublet scheme and its effects on muon anomalous magnetic dipole moment, $a_{\mu}$, including…

High Energy Physics - Phenomenology · Physics 2021-09-15 Chuan-Hung Chen , Cheng-Wei Chiang , Takaaki Nomura

We study the Two-Higgs-Doublet Model with the aligned Yukawa sector (A2HDM) in light of the observed excess measured in the muon anomalous magnetic moment. We take into account the existing theoretical and experimental constraints with…

High Energy Physics - Phenomenology · Physics 2016-03-23 Tao Han , Sin Kyu Kang , Joshua Sayre

It is possible to ameliorate the Higgs vacuum stability problem by switching over to two Higgs doublet models (2HDM), ensuring a stable electroweak vacuum up to the Planck scale, even though the top quark mass may be on the high side.…

High Energy Physics - Phenomenology · Physics 2017-09-06 Nabarun Chakrabarty , Biswarup Mukhopadhyaya

We perform global fits to general two-Higgs doublet models (2HDMs) with generalized couplings using the most updated data from ATLAS, CMS, and Tevatron. We include both scenarios with CP-conserving and CP-violating couplings. By relaxing…

High Energy Physics - Phenomenology · Physics 2015-06-17 Kingman Cheung , Jae Sik Lee , Po-Yan Tseng

Motivated by the new observed scalar boson of 126 GeV at ATLAS and CMS, various phenomena in two-Higgs-doublet model (THDM) are investigated broadly in the literature. For considering the model that possesses a solution to the massive…

High Energy Physics - Phenomenology · Physics 2015-06-22 Chuan-Hung Chen , Takaaki Nomura

Properties of the Higgs sector of Two Higgs Doublet Model (2HDM) and existing constraints on its parameters are discussed. Potential of the Photon Linear Collider in testing various Higgs scenarios of 2HDM, including the MSSM, based on the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Maria Krawczyk

We present the results obtained by performing global fits of two-Higgs-doublet models (2HDMs) using the full Run 1 and Run 2 Higgs datasets collected at the LHC. Avoiding unwanted tree-level flavor-changing neutral currents and including…

High Energy Physics - Phenomenology · Physics 2025-04-24 Yongtae Heo , Jae Sik Lee , Chan Beom Park

We consider the possibility that after operations at the LHC and e^+e^- Linear Colliders a Higgs boson will be discovered, but no signal of New Physics will be found (Standard-Model-like scenario). This can occur in the Standard Model (SM)…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ilya F. Ginzburg , Maria Krawczyk , Per Osland

In this work, we present an analysis of a search for charged Higgs boson in the context of Two Doublet Higgs Model (2HDM) which is an extension of the Standard Model of particles physics. The 2HDM predicts by existence scalar sector with…

High Energy Physics - Phenomenology · Physics 2015-07-24 Nady Bakhet , Maxim Yu. Khlopov , Tarek Hussein

Phenomenological studies of a CP-violating two-Higgs-doublet Model with type-II Yukawa couplings are presented. In the light of recent LHC data, an update on the viable parameter space that survives both the experimental and theoretical…

High Energy Physics - Phenomenology · Physics 2015-02-16 Lorenzo Basso , Per Osland , Giovanni Marco Pruna

\texttt{SpaceMath v.2.0} with Machine Learning is an extension of the previous version which we implement observables related with LHC Higgs boson data and their projections for the High Luminosity and High Energy Large Hadron Collider. In…

High Energy Physics - Phenomenology · Physics 2023-09-13 M. A. Arroyo-Ureña , T. A. Valencia-Pérez

Present data do not rule out the light neutral Higgs particle h or A with mass below 40--50 GeV in the framework of the general 2HDM ("Model II"). The status of this model in a light of existing LEP I data and a potential of the new muon…

High Energy Physics - Phenomenology · Physics 2007-05-23 Maria Krawczyk

By borrowing the results from a Large Hadron Collider (LHC) analysis performed with $36.1~\text{fb}^{-1}$ of Run 2 data intended to search for $A$ production followed by $ZH$ decay in turn yielding $l^+l^-b\bar b$ ($l=e,\mu$) final states…

High Energy Physics - Phenomenology · Physics 2020-10-15 Rachid Benbrik , Henry Day-Hall , Stefano Moretti , Souad Semlali

In the most general two-Higgs-doublet model (2HDM), unitary transformations between the two Higgs fields do not change the functional form of the Lagrangian. All physical observables of the model must therefore be independent of such…

High Energy Physics - Phenomenology · Physics 2014-11-18 Sacha Davidson , Howard E. Haber

This manual describes the public code 2HDMC which can be used to perform calculations in a general, CP-conserving, two-Higgs-doublet model (2HDM). The program features simple conversion between different parametrizations of the 2HDM…

High Energy Physics - Phenomenology · Physics 2009-12-04 David Eriksson , Johan Rathsman , Oscar Stål

In the two-Higgs-doublet model, different Higgs doublets can be viewed as components of a generic "hyperspinor". We decompose the Higgs potential of this model into irreducible representations of the SU(2) group of transformations of this…

High Energy Physics - Phenomenology · Physics 2009-11-11 I. P. Ivanov