Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Øgreid, P."'
We explore the phenomenology of Weinberg's $Z_2\times Z_2$ symmetric three-Higgs-doublet potential, allowing for spontaneous violation of CP due to complex vacuum expectation values. An overview of all possible ways of satisfying the stationary-point
Externí odkaz:
http://arxiv.org/abs/2411.05480
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
CP violation plays a very important role in nature with implications both for Particle Physics and for Cosmology. Accounting for the observed matter anti-matter asymmetry of the Universe requires the existence of new sources of CP violation beyond th
Externí odkaz:
http://arxiv.org/abs/2302.07210
Models with an extended scalar electroweak sector are well motivated. Such models could accommodate a dark matter candidate if there is an additional scalar representation with a vanishing vacuum expectation value and, in addition, there are no coupl
Externí odkaz:
http://arxiv.org/abs/2301.12194
Publikováno v:
Nordisk tidsskrift for utdanning og praksis, Vol 18, Iss 2 (2024)
Elevers skriving og tekster har fått økt oppmerksomhet både i grunnskolen og videregående opplæring de siste tiårene, og norskfaget har et særskilt ansvar for elevenes skrivekompetanse. Vi vet en del om fokusområder og analyseinnganger i fors
Externí odkaz:
https://doaj.org/article/20a50d3268e74798a98dacf9710b1dd0
The $\mathbb Z_2\times \mathbb Z_2$-symmetric 3HDM potential, sometimes called Weinberg's 3HDM potential, can accommodate both explicit and spontaneous CP violation as well as natural flavour conservation and is hence relevant for studies of CP viola
Externí odkaz:
http://arxiv.org/abs/2209.06499
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 study the potential of Weinberg's $\mathbb{Z}_2\times\mathbb{Z}_2$-symmetric three-Higgs-doublet model (3HDM). The potential is designed to accommodate CP violation in the scalar sector within a gauge theory, while at the same time allowing for na
Externí odkaz:
http://arxiv.org/abs/2208.13594
Models with an extended scalar electroweak sector can have vanishing vacuum expectation values in a basis where an underlying symmetry is imposed. Such extensions are very well motivated. If a symmetry prevents couplings between fermions and addition
Externí odkaz:
http://arxiv.org/abs/2204.08872
In spite of the success of the Standard Model of Particle Physics, there are some theoretical predictions which are not yet fully established experimentally as well as some experimental observations which cannot be fitted within its theoretical frame
Externí odkaz:
http://arxiv.org/abs/2204.05684