Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Per Osland"'
Publikováno v:
Journal of High Energy Physics (JHEP)
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Journal of High Energy Physics
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Journal of High Energy Physics
Symmetries of the Two-Higgs-Doublet Model (2HDM) potential that can be extended to the whole Lagrangian, i.e. the CP-symmetries CP1, CP2, CP3 and the Higgs-family symmetries Z2, U(1) and SO(3) are discussed. Sufficient and necessary conditions in ter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40f408fe26f46bb40b24f0f7e702137f
https://hdl.handle.net/11250/2980673
https://hdl.handle.net/11250/2980673
Publikováno v:
European Physical Journal
European Physical Journal C
European Physical Journal C: Particles and Fields, Vol 80, Iss 6, Pp 1-12 (2020)
European Physical Journal C
European Physical Journal C: Particles and Fields, Vol 80, Iss 6, Pp 1-12 (2020)
The full ATLAS Run 2 data set with time-integrated luminosity of 139 fb$^{-1}$ in the diboson channels in hadronic final states is used to probe a simple model with an extended gauge sector (EGM), proposed by Altarelli et al., and often taken as a co
Publikováno v:
Physical Review D
Physical Review
Physical Review
In this paper we analyse in detail an $S_3$-symmetric three-Higgs-doublet model with a specific vacuum configuration. This analysis allows us to illustrate important features of models with several Higgs doublets, such as the possibility of having sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c05c414d516f01d70f3708c386b46454
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 8, Pp 1-9 (2017)
Journal of High Energy Physics
Journal of High Energy Physics (JHEP)
Journal of High Energy Physics
Journal of High Energy Physics (JHEP)
For models with several Higgs doublets we present an alternative method to the one proposed by Branco, Gerard and Grimus, in 1984, to check whether or not CP is spontaneously violated in the Higgs potential. The previous method is powerful and rigoro
Publikováno v:
Journal of High Energy Physics (JHEP)
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-55 (2019)
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-55 (2019)
Journal of High Energy Physics
We explore some aspects of models with two and three SU(2) scalar doublets that lead to mass degeneracies among some of the physical scalars. In Higgs sectors with two scalar doublets, the exact degeneracy of scalar masses, without an artificial fine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ce28672fda899fd79d5f7d234f474f7
https://hdl.handle.net/11250/2642957
https://hdl.handle.net/11250/2642957
Publikováno v:
Journal of Physics: Conference Series (JPCS)
Symmetries play a very important r\^ole in Particle Physics. In extended scalar sectors, the existence of symmetries may permit the models to comply with the experimental constraints in a natural way, and at the same time reduce the number of free pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f989ad22909d21f1db14ec07ee4f36cb
Autor:
Per Osland
Publikováno v:
SciPost Physics Proceedings, Iss 3, p 016 (2020)
This is a review of Glauber's asymptotic diffraction theory, in which diffractive scattering is described in terms of interference between semiclassical amplitudes, resulting from a stationary-phase approximation. Typically two such amplitudes are su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d3e86e27948ac7b860a3c3a478ac033
Publikováno v:
PoS-Proceedings of Science
We discuss how one can identify CP violation (and conservation) in multi-Higgs-doublet potentials. After a brief review of CP violation in the 2HDM, we refer to the fact that for NHDM with $N \geq 3$ the well known methods useful in the case $N = 2$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f049172ae9a17fb2b691c13cea7cd83
https://hdl.handle.net/1956/19928
https://hdl.handle.net/1956/19928
Publikováno v:
Journal of High Energy Physics (JHEP)
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2018, Iss 12, Pp 1-49 (2018)
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2018, Iss 12, Pp 1-49 (2018)
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2afb07fc7b30e8a52ddddcbbb6f51595
Autor:
Farvah Mahmoudi, Katri Huitu, Per Osland, Antonio Racioppi, Oscar Stål, Martti Raidal, mK. Kannike, Kei Yagyu, Tobias Hurth, Rui Santos, Lorenzo Basso, D. Sokolowska, Abdesslam Arhrib, Shinya Kanemura, M. Purmohammadi, Wafaa Khater, Mayumi Aoki, Emine Yildirim, Pankaj Sharma, G. M. Pruna, I.F. Ginzburg, Jaime Hernández-Sánchez, Renato Guedes, Maria Krawczyk, S. Najjari, A. G. Akeroyd, Stefano Moretti, Mario Kadastik
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Eur.Phys.J.C
Eur.Phys.J.C, 2017, 77 (5), pp.276. ⟨10.1140/epjc/s10052-017-4829-2⟩
Eur.Phys.J.C, 2017, 77 (5), pp.276. 〈10.1140/epjc/s10052-017-4829-2〉
European Physical Journal C: Particles and Fields, Vol 77, Iss 5, Pp 1-33 (2017)
European Physical Journal C: Particles and Fields
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77 (5), pp.276. ⟨10.1140/epjc/s10052-017-4829-2⟩
The European Physical Journal C
European Physical Journal C
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Eur.Phys.J.C
Eur.Phys.J.C, 2017, 77 (5), pp.276. ⟨10.1140/epjc/s10052-017-4829-2⟩
Eur.Phys.J.C, 2017, 77 (5), pp.276. 〈10.1140/epjc/s10052-017-4829-2〉
European Physical Journal C: Particles and Fields, Vol 77, Iss 5, Pp 1-33 (2017)
European Physical Journal C: Particles and Fields
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77 (5), pp.276. ⟨10.1140/epjc/s10052-017-4829-2⟩
The European Physical Journal C
European Physical Journal C
The goal of this report is to summarize the current situation and discuss possible search strategies for charged scalars, in non-supersymmetric extensions of the Standard Model at the LHC. Such scalars appear in Multi-Higgs-Doublet models (MHDM), in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56f5050b8c6f8bb4f50bb9a2e6cc4658