A5042580302- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Black Holes and Theoretical Physics
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Particle Detector Development and Performance
- Nuclear physics research studies
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Distributed and Parallel Computing Systems
- Crystallography and Radiation Phenomena
- Particle accelerators and beam dynamics
- Atomic and Molecular Physics
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Astrophysics and Cosmic Phenomena
- Radioactive Decay and Measurement Techniques
- Advanced NMR Techniques and Applications
- Atomic and Subatomic Physics Research
- International Science and Diplomacy
- Quantum chaos and dynamical systems
- Advanced Mathematical Identities
University of Bergen
2015-2024
University of Lisbon
2016-2022
Gomel Engineering Institute
2009-2019
Deutsches Elektronen-Synchrotron DESY
1983-2018
Western Norway University of Applied Sciences
2018
University of Warsaw
2010-2016
Lomonosov Moscow State University
2012
European Organization for Nuclear Research
1973-2012
University of Trieste
2009-2010
Nordic Institute for Theoretical Physics
2009
The goal of this report is to summarize the current situation and discuss possible search strategies for charged scalars, in non-supersymmetric extensions Standard Model at LHC. Such scalars appear Multi-Higgs-Doublet models (MHDM), particular popular Two-Higgs-Doublet model (2HDM), allowing additional neutral Higgs bosons. These have attractive property that electroweak precision observables are automatically agreement with tree level. For most version framework, Model~II, a discovery boson...
We derive a general expression for Δρ (or, equivalently, the oblique parameter T) in SU(2) × U(1) electroweak model with an arbitrary number of scalar doublets, hypercharge ±1/2, and singlets. The experimental bound on constitutes strong constraint masses mixings particles that model.
We confront the two-Higgs-doublet model with a variety of experimental constraints as well theoretical consistency conditions. The most constraining data are $\overline{B}\ensuremath{\rightarrow}{X}_{s}\ensuremath{\gamma}$ decay rate (at low values ${M}_{{H}^{\ifmmode\pm\else\textpm\fi{}}}$), and $\ensuremath{\Delta}\ensuremath{\rho}$ both high ${M}_{{H}^{\ifmmode\pm\else\textpm\fi{}}}$). also take into account $B\overline{B}$ oscillation ${R}_{b}$, or width...
One-loop off-shell contributions to the three-gluon vertex are calculated, in an arbitrary covariant gauge and space-time dimensions, including quark-loop (with massless quarks). It is shown how one can get results for all on-shell limits of interest directly from general expression. The corresponding expressions one-loop ghost-gluon also obtained. They allow a check consistency with Ward-Slavnov-Taylor identity.
We discuss the phenomenological consequences of requiring cancellation quadratic divergences up to leading two-loop order within two-Higgs-doublet model. Taking into account existing experimental constraints, allowed regions in parameter space, permitting cancellation, are determined. A degeneracy between masses scalar bosons is observed for $\mathrm{tan}\ensuremath{\beta}\ensuremath{\gtrsim}40$. The possibility $CP$ violation potential discussed and...
One-loop off-shell contributions to the quark-gluon vertex are calculated, in an arbitrary covariant gauge and space-time dimension, including quark-mass effects. It is shown how one can get results for all on-shell limits of interest directly from expressions. In order demonstrate that Ward-Slavnov-Taylor identity satisfied, we have also calculated corresponding one-loop contribution involving quark-quark-ghost-ghost vertex.
We explore an extension of the inert doublet model which allows also for $CP$ violation in Higgs sector. This necessitates two noninert doublets. The lightest neutral scalar is a candidate dark matter. Scanning over parameters we preserve abundance matter agreement with WMAP data. impose all relevant collider and theoretical constraints to determine allowed parameter space both appropriate violated. In addition find regions where cutoff originating from naturality arguments can be...
A bstract We present a phenomenological study of CP-violating two-Higgs-doublet Model with type-II Yukawa couplings at the Large Hadron Collider (LHC). In light recent LHC data, we focus on parameter space that survives current and past experimental constraints as well theoretical bounds model. Once phenomeno-logical scenario is set, analyse scope in exploring this model through discovery charged Higgs boson produced association W boson, former decaying into lightest neutral second state,...
Abstract The Two Higgs Doublet Model invariant under the gauge group $$SU(2)\times U(1)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>S</mml:mi> <mml:mi>U</mml:mi> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:mo>)</mml:mo> <mml:mo>×</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math> is known to have six additional global discrete or continuous symmetries of its scalar sector. We discovered regions parameter space model which are basis and renormalization all...
There are many possibilities for new physics beyond the Standard Model that feature non-standard Higgs sectors. These may introduce sources of CP violation, and there be mixing between multiple bosons or other scalar bosons. Alternatively, a composite state, even no at all. scenarios have important implications collider as well cosmology, understanding their phenomenology is essential full comprehension electroweak symmetry breaking. This report discusses most relevant theories which go its...