from 30 November 2017 to 3 December 2017 (Europe/Warsaw)
University of Warsaw
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parallel session 3

Place

Location: University of Warsaw
Address: Faculty of Physics Pasteura Str. 5 02-093 Warsaw Poland
Date: 2 Dec 14:00 - 15:45

Conveners

    • Santos, Rui (ISEL & CFTC Lisboa)

Timetable | Contribution List

Displaying 7 contributions out of 7
We analyse new signals of Dark Matter (DM) at the LHC, in a 3-Higgs Doublet Model (3HDM) in which only one doublet acquires a Vacuum Expectation Value (VEV), preserving a Higgs parity Z_2. The other two doublets are inert and do not develop a VEV, leading to a dark scalar sector controlled by the Higgs parity and a Dark Matter (DM) candidate provided by the lightest CP-even dark scalar H1. This le ... More
Presented by Dorota SOKOLOWSKA on 02/12/2017 at 13:00
I will discuss the extension of the Standard Model by a doublet and a complex scalar singlet and a pair of heavy vector quarks. This model provides an extra source of spontaneous CP violation and a strong enough first-order electroweak phase transition to suppress the baryon-violating sphaleron process. This model contains a proper description for baryogengesis and provides a correct relic density ... More
Presented by Ms. Neda DARVISHI on 02/12/2017 at 13:30
The models with the gauge group $SU(3)_c\times SU(3)_L\times U(1)_X$ (331-models) have been advocated to explain why there are three fermion generations in Nature. As such they provide partial understanding of the flavour sector. The hierarchy of fermion masses in the Standard Model is another puzzle which remains without compelling explanation. In this talk I present a model that incorporates Fro ... More
Presented by Niko KOIVUNEN on 02/12/2017 at 14:00
The fermion spectrum observed in nature exhibits a wide range of hierarchies that go from the sub-eV regime up to hundreds of GeV. In this talk I will introduce a multi-Higgs extension of the Standard Model whose origin is inspired in a recently proposed Grand Unified Theory denoted as Supersymmetric Higgs Unified Trinification (or SHUT model for short). The presence of an SU(3) family symmetry at ... More
Presented by Antonio MORAIS on 02/12/2017 at 13:15
The off-shell one-loop renormalization of a Higgs effective field theory with a sextic scalar potential is presented. This is achieved by renormalizing the theory once reformulated in terms of two auxiliary fields, allowing to diagrammatically separate the SM and BSM contributions to 1-PI amplitudes. Invariance under an extended Becchi-Rouet-Stora-Tyutin symmetry guarantees the physical equivalenc ... More
Presented by Andrea QUADRI on 02/12/2017 at 14:30
In this talk we present a new method of renormalisation-group (RG) improvement of effective potentials in models with extended scalar sectors. The method amounts to running with the renormalisation scale to a surface in the parameter space where quantum corrections to the effective potential vanish. This can be equivalently understood as fixing the renormalisation scale to a suitably chosen field- ... More
Presented by Bogumila SWIEZEWSKA on 02/12/2017 at 14:15
We show that a universal texture zero in the (1,1) position of all fermionic mass matrices, including heavy right-handed Majorana neutrinos driving a type-I see-saw mechanism, can lead to a viable spectrum of mass, mixing and CP violation for both quarks and leptons, including (but not limited to) three important postdictions: the Cabibbo angle, the charged lepton masses, and the leptonic `reacto ... More
Presented by Ivo DE MEDEIROS VARZIELAS on 02/12/2017 at 13:45
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