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We construct a model where the smallness of the masses of first quark generations implies the near block diagonal nature of the CKM matrix and vice-versa. For this set-up, we rely on a 2HDM structure with an $S_3$ symmetry. We show that an…

High Energy Physics - Phenomenology · Physics 2017-08-16 Dipankar Das , Ujjal Kumar Dey , Palash B. Pal

One of the standard ways to study scenarios beyond the Standard Model involves extending the Higgs Sector. This work examines the Three Higgs Doublet Model (3HDM) in a Type-Z or democratic setup, where each Higgs doublet couples exclusively…

High Energy Physics - Phenomenology · Physics 2025-07-17 Nipun Batra , Baradhwaj Coleppa , Akshat Khanna , Santosh Kumar Rai , Agnivo Sarkar

We analyze the constraints obtainable from present data using the Standard Model Effective Field Theory (SMEFT) on extensions of the Standard Model with additional electroweak singlet or triplet scalar fields. We compare results obtained…

High Energy Physics - Phenomenology · Physics 2023-04-14 John Ellis , Ken Mimasu , Francesca Zampedri

Motivated by the fermion mass hierarchy we study the phenomenology of two flavorful two-Higgs-doublet model (2HDM) scenarios. By virtue of the flavor or singular alignment ansatz it is possible to link the mass of a subset of fermions to…

High Energy Physics - Phenomenology · Physics 2021-08-25 J. L. Diaz-Cruz , U. J. Saldana-Salazar , K. M. Tame-Narvaez , V. T. Tenorth

Discarding the prejudice about fine tuning, we propose a novel and efficient approach to identify relevant regions of fundamental parameter space in supersymmetric models with some amount of fine tuning. The essential idea is the mapping of…

High Energy Physics - Phenomenology · Physics 2018-03-06 Masahiro Yamaguchi , Wen Yin

We examined the influence of additional scalar doublet on the parameter space of the Standard Model supplemented with a generation of new vector like leptons. In particular we identified the viable regions of parameter space by inspecting…

High Energy Physics - Phenomenology · Physics 2013-05-29 Sumit K. Garg , C. S. Kim

We present a momentum-dependent reweighting strategy to extend current LHC di-Higgs analyses within the $\kappa$-framework and SMEFT into the bosonic sector of the Higgs Effective Field Theory (HEFT). Unlike SMEFT, where symmetry…

High Energy Physics - Phenomenology · Physics 2025-06-25 Christoph Englert , Tom Ingebretsen Carlson , Jörgen Sjölin , Michael Spannowsky

The Standard Model Effective Field Theory (SMEFT) and the Low Energy Effective Field Theory (LEFT) can be extended by adding additional spin 0, 1/2 and 1 dark matter particles which are singlets under the Standard Model (SM) gauge group. We…

High Energy Physics - Phenomenology · Physics 2022-10-13 Jason Aebischer , Wolfgang Altmannshofer , Elizabeth E. Jenkins , Aneesh V. Manohar

We investigate a supersymmetric extension of the Minimal Supersymmetric Standard Model (MSSM), called the TNMSSM, containing a $SU(2)$ Higgs triplet $(\hat{T})$ of $Y=0$ hypercharge and a singlet superfields $(\hat{S})$ in the corresponding…

High Energy Physics - Phenomenology · Physics 2015-09-16 Priyotosh Bandyopadhyay , Claudio Coriano , Antonio Costantini

We put forward a model, or rather a relatively broad class of models, beyond the Standard Model based on the two main assumptions: MPP) The coupling constants should be fixed such as to ensure that there be many ``vacuum states'', i.e.…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. L. Bennett , C. D. Froggatt , H. B. Nielsen

The current LHC Higgs data provide strong constraints on possible deviations of the couplings of the observed 125 GeV Higgs boson from the Standard Model (SM) expectations. Therefore, it now becomes compelling that any extended Higgs sector…

High Energy Physics - Phenomenology · Physics 2015-08-03 P. S. Bhupal Dev , Apostolos Pilaftsis

Measurements of a Higgs boson at the Large Hadron Collider (LHC) have become increasingly consistent with the predictions of the Standard Model (SM). This fact puts severe constraints on many potential low-energy extensions of the Higgs…

High Energy Physics - Phenomenology · Physics 2019-09-04 Emily Hanson , William Klemm , Roger Naranjo , Yvonne Peters , Apostolos Pilaftsis

We present a convex geometry perspective to the Effective Field Theory (EFT) parameter space. We show that the second $s$ derivatives of the forward EFT amplitudes form a convex cone, whose extremal rays are closely connected with states in…

High Energy Physics - Phenomenology · Physics 2020-11-18 Cen Zhang , Shuang-Yong Zhou

An updated global fit on the parameter-space of the Aligned Two-Higgs-Doublet model has been performed with the help of the open-source package HEPfit, assuming the Standard-Model Higgs to be the lightest scalar. No new sources of CP…

High Energy Physics - Phenomenology · Physics 2024-03-13 Anirban Karan , Víctor Miralles , Antonio Pich

The lack of evidence for superparticles at the CERN LHC, along with the rather high value of the Higgs mass, has sharpened the perception that supersymmetric model parameter space is highly electroweak fine-tuned (EWFT). We compare three…

High Energy Physics - Phenomenology · Physics 2013-11-27 Howard Baer , Vernon Barger , Dan Mickelson

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

Motivation: Profile hidden Markov Models (pHMMs) are a popular and very useful tool in the detection of the remote homologue protein families. Unfortunately, their performance is not always satisfactory when proteins are in the 'twilight…

Artificial Intelligence · Computer Science 2008-12-11 Juliana S Bernardes , Alberto Davila , Vitor Santos Costa , Gerson Zaverucha

Predictions for the Higgs masses are a distinctive feature of supersymmetric extensions of the Standard Model, where they play a crucial role in constraining the parameter space. The discovery of a Higgs boson and the remarkably precise…

The representation of the seesaw orthogonal matrix in the complex plane establishes a graphical correspondence between neutrino mass models and geometrical configurations, particularly useful to study relevant aspects of leptogenesis. We…

High Energy Physics - Phenomenology · Physics 2011-07-19 Pasquale Di Bari

We use functional methods to match the Two-Higgs Doublet Model with heavy scalars in the nondecoupling regime to the appropriate nonlinear effective field theory, which takes the form of an electroweak chiral Lagrangian (HEFT). The…

High Energy Physics - Phenomenology · Physics 2024-09-12 G. Buchalla , F. König , Ch. Müller-Salditt , F. Pandler