76 citations · 334 across the 25 of their papers we have counts for
23 papers · 1 filter
Mixed CP Violation and Natural Alignment in 2HDMs
Neda Darvishi, Apostolos Pilaftsis
We present a new form of CP violation (CPV) that can be realised in Two-Higgs Doublet Models (2HDMs) and was studied recently in [1]. By examining the vacuum manifold of a generic…
Identifying CP Basis Invariants in SMEFT
Neda Darvishi, Yining Wang, Jiang-Hao Yu
Building on our automated framework that uses ring diagrams for classifying CP basis invariants [Phys. Rev. D 108, 115030 (2023)], this paper broadens the application of the method…
Automated Ring-Diagram Framework for Classifying CP Invariants
Neda Darvishi, Yining Wang, Jiang-Hao Yu
In this study, we introduce a transformative, automated framework for classifying basis invariants in generic field theories. Utilising a novel ring-diagram methodology accompanied…
Maximising CP Violation in Naturally Aligned Two-Higgs Doublet Models
Neda Darvishi, Apostolos Pilaftsis, Jiang-Hao Yu
The Two-Higgs Doublet Model (2HDM) is a well-motivated theoretical framework that provides additional sources of CP Violation (CPV) beyond the Standard Model (SM). After studying t…
Theory Techniques for Precision Physics -- Snowmass 2021 TF06 Topical Group Report
Radja Boughezal, Zoltan Ligeti, Wolfgang Altmannshofer +26
The wealth of experimental data collected at laboratory experiments suggests that there is some scale separation between the Standard Model (SM) and phenomena beyond the SM (BSM).…
Pseudo-Goldstone Dark Matter Model with CP violation
Neda Darvishi, Bohdan Grzadkowski
We consider an explicitly CP-violating model with two Higgs doublets and one complex singlet scalar. The singlet is charged under a global symmetry which is softly b…
Future prospects for parton showers
Neda Darvishi, Joshua Isaacson M. R. Masouminia, Zoltan Nagy +2
In this brief Snowmass White Paper for the Theory Frontier, we argue that there have been important recent developments in the algorithms used to generate a simulated parton shower…
Event Generators for High-Energy Physics Experiments
J. M. Campbell, M. Diefenthaler, T. J. Hobbs +209
We provide an overview of the status of Monte-Carlo event generators for high-energy particle physics. Guided by the experimental needs and requirements, we highlight areas of acti…
Higgs-Sector Predictions from Maximally Symmetric multi-Higgs Doublet Models
Neda Darvishi, M. R. Masouminia, Apostolos Pilaftsis
Maximally Symmetric -Higgs Doublet Models (MS-HDMs)define very economic settings that enable sharp Higgs-sector predictions beyond the Standard Model (SM) potentially testabl…
Electroweak Radiative Corrections in Precision LHC Measurements of +jets
Neda Darvishi, M. R. Masouminia
We calculate the fiducial and differential production cross-sections in the presence of electroweak (EW) corrections through virtual loop contributions to the…
Maximally Symmetric Three Higgs Doublet Model
Neda Darvishi, M. R. Masouminia, Apostolos Pilaftsis
We consider the general Three-Higgs Doublet Model (3HDM) and identify all limits that lead to exact SM alignment. After discussing the underlying symmetries that can naturally enfo…
Signature of the Maximally Symmetric 2HDM via -Quadruplet Productions at the LHC
N. Darvishi, M. R. Masouminia
We consider the Maximally Symmetric Two-Higgs Doublet Model (MS-2HDM) in which the so-called Standard Model (SM) alignment can be achieved naturally by the virtue of an SO(5) symme…
Accidental Symmetries in the 2HDMEFT
Callum Birch-Sykes, Neda Darvishi, Yvonne Peters +1
We construct accidentally symmetric potentials in the framework of Two Higgs Model Effective Field Theory (2HDMEFT) including higher-order operators of dimension 6 and dimension 8.…
Natural Alignment in Multi-Higgs Doublet Models
Neda Darvishi, Apostolos Pilaftsis
We present the complete set of continuous maximal symmetries that the potential of an -Higgs Doublet Model (HDM) should satisfy for natural Standard Model (SM) alignment. As…
Classifying Accidental Symmetries in Multi-Higgs Doublet Models
Neda Darvishi, Apostolos Pilaftsis
The potential of -Higgs Doublet Models (HDMs) contains a large number of SU(2)-preserving accidental symmetries as subgroups of the symplectic group Sp(2. To classify…
-factorization vs collinear factorization in pair production at the LHC
N. Darvishi, M. R. Masouminia, K. Ostrolenk
In this paper, we calculate the inclusive rate of pair production through leptonic decay channels in the -factorization…
Quartic Coupling Unification in the Maximally Symmetric 2HDM
Neda Darvishi, Apostolos Pilaftsis
We consider the Maximally Symmetric Two-Higgs Doublet Model (MS-2HDM) in which the so-called Standard Model (SM) alignment can be naturally realised as a consequence of an accident…
Implication of Quadratic Divergences Cancellation in the Two Higgs Doublet Model
Neda Darvishi, Maria Krawczyk
With the aim of exploring the Higgs sector of the Two Higgs Doublet Model (2HDM), we have chosen the exact and soft symmetry breaking versions of the 2HDM with non-zero vacuu…
A phenomenological study on the production of Higgs bosons in the cSMCS model at the LHC
Neda Darvishi, Mohammad Reza Masouminia
In the present work, we intend to predict the production rates of the Higgs bosons in the simplest extension of the Standard Model (SM) by a neutral complex singlet (cSMCS). This m…
Baryogenesis of the Universe in cSMCS Model plus Iso-Doublet Vector Quark
Neda Darvishi
CP violation of the SM is insufficient to explain the baryon asymmetry in the universe and therefore an additional source of CP violation is needed. Here the extension of the SM by…
CP violation in the extension of SM with a complex singlet scalar and vector quarks
Neda Darvishi, Maria Krawczyk
We consider the simplest extension of the SM with a complex singlet and a pair of heavy doublet vector quarks, the so-called cSMCS model. In this model, the CP violation can emerge…
The Inert Doublet Model and its extensions
Maria Krawczyk, Neda Darvishi, Dorota Sokolowska
The Inert Doublet Model and its extension with an additional complex singlet is considered. The CP violation aspects are analysed in the simplified case, with one SM-like Higgs dou…
IDMS: Inert Dark Matter Model with a complex singlet
Cesar Bonilla, Dorota Sokolowska, Neda Darvishi +2
Within the Inert Doublet Model (IDM) there is a viable dark matter candidate. This simple model can provide a strong enough first order phase transition, which is required in order…