Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Øgreid, Odd Magne"'
The Two Higgs Doublet Model invariant under the gauge group SU(2)xU(1) is known to have six additional global discrete or continuous symmetries of its scalar sector. We have discovered regions of parameter space of the model which are basis and renor
Externí odkaz:
http://arxiv.org/abs/2306.02410
Publikováno v:
J. High Energ. Phys. 2023, 143 (2023)
Soft breaking of a symmetry requires an invariance of the dimension-4 part of the Lagrangian and non-trivial variation of the lower-dimensional part. However, in general, separation between the dim-4 and lower-dimensional Lagrangian is not invariant
Externí odkaz:
http://arxiv.org/abs/2209.00152
We discuss the three different classes of CP-symmetries that can be realized in a two-Higgs-doublet model, CP1, CP2 and CP3. We express conditions for realizing these symmetries in terms of masses and couplings of the model, thereby providing a way o
Externí odkaz:
http://arxiv.org/abs/1903.09894
The Standard Model (SM)-like couplings of the observed Higgs boson impose strong constraints on the structure of any extended Higgs sector. We consider the theoretical properties and the phenomenological implications of a generic two Higgs doublet mo
Externí odkaz:
http://arxiv.org/abs/1808.01472
Autor:
Ogreid, Odd Magne
We discuss the importance of basis invariants in the general 2HDM and how these relates to masses and couplings. We also present a simple, yet powerful technique to translate parameters of the potential into combinations of masses and couplings of th
Externí odkaz:
http://arxiv.org/abs/1803.09351
Publikováno v:
ECONF C0705302:HIG08,2007
We review recent work on constraining the parameter space of the Two-Higgs-Doublet Model by theoretical and experimental results. Some characteristics of the model, in particular the distribution of masses in the surviving parameter space, are discus
Externí odkaz:
http://arxiv.org/abs/0709.4203
Publikováno v:
Phys.Rev.D76:095001,2007
We confront the Two-Higgs-Doublet Model with a variety of experimental constraints as well as theoretical consistency conditions. The most constraining data are the \bar B\to X_s\gamma decay rate (at low values of M_{H^\pm}), and \Delta\rho (at both
Externí odkaz:
http://arxiv.org/abs/0706.2997
Publikováno v:
Nonlin.Phenom.ComplexSyst.10:347-357,2007
The Two-Higgs-Doublet Model is considered, in its CP-non-conserving version. It is shown quantitatively how vacuum stability and tree-level unitarity in the Higgs-Higgs-scattering sector constrain the parameter space of the model. In particular, at h
Externí odkaz:
http://arxiv.org/abs/hep-ph/0702097
Publikováno v:
Nucl.Phys.B775:45-77,2007
It is important to provide guidance on whether CP violation may be measurable in top-quark production at the Large Hadron Collider. The present work extends an earlier analysis of the non-supersymmetric Two-Higgs-Doublet Model in this respect, by all
Externí odkaz:
http://arxiv.org/abs/hep-ph/0605142
Autor:
Ogreid, Odd Magne, Osland, Per
Publikováno v:
J.Comput.Appl.Math. 140 (2002) 659-671
Results are presented for some infinite series appearing in Feynman diagram calculations, many of which are similar to the Euler series. These include both one-, two- and three-dimensional series. The sums of these series can be evaluated with the he
Externí odkaz:
http://arxiv.org/abs/math-ph/0010026