644 research outputs found
Neutralinos in E_6 inspired supersymmetric U(1)' models
The neutralino sector in E_6 inspired supersymmetric models with extra
neutral gauge bosons and singlet Higgs fields contains additional gaugino and
singlino states compared to the MSSM. We discuss the neutralino mixing in rank
5 and rank 6 models and analyze the supersymmetric parameter space where the
light neutralinos have mainly singlino or MSSM character. The neutralino
character, resonance effects of the new gauge bosons and, assuming mSUGRA-type
RGEs, different selectron masses lead to significant differences between the
MSSM and the extended models in neutralino production at an e^+e^- linear
collider. Beam polarization may improve the signatures to distinguish between
the models. In an appendix, we present the mass terms of the gauge bosons,
charginos and sfermions which show a significant different mass spectrum than
in the MSSM and give all relevant neutralino couplings.Comment: 26 pages, LaTeX, 5 eps figures; version to be published in EPJ
Neutralino Production with Polarized Beams in Extended Supersymmetric Models
We discuss associated neutralino production e^+ e^- --> \tilde{\chi}^0_1
\tilde{\chi}^0_2 with both beams polarized in the MSSM, NMSSM and an E_6 model.
It is shown that neutralinos with a large singlino component can be produced at
a high luminosity linear collider in a broad parameter range. Polarization
effects in the extended models are compared over the whole parameter space
where the lightest neutralino is mainly a singlino. We explain the complete
different behavior of these models in some parameter regions, which may help to
identify the respective supersymmetric model.Comment: 10 pages, LaTeX, 10 eps figures, contribution to the Proceedings of
the "2nd Joint ECFA/DESY Study on Physics and Detectors for a Linear
Electron-Positron Collider
Offline and online power aware resource allocation algorithms with migration and delay constraints
© . This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/In order to handle advanced mobile broadband services and Internet of Things (IoT), future Internet and 5G networks are expected to leverage the use of network virtualization, be much faster, have greater capacities, provide lower latencies, and significantly be power efficient than current mobile technologies. Therefore, this paper proposes three power aware algorithms for offline, online, and migration applications, solving the resource allocation problem within the frameworks of network function virtualization (NFV) environments in fractions of a second. The proposed algorithms target minimizing the total costs and power consumptions in the physical network through sufficiently allocating the least physical resources to host the demands of the virtual network services, and put into saving mode all other not utilized physical components. Simulations and evaluations of the offline algorithm compared to the state-of-art resulted on lower total costs by 32%. In addition to that, the online algorithm was tested through four different experiments, and the results argued that the overall power consumption of the physical network was highly dependent on the demandsâ lifetimes, and the strictness of the required end-to-end delay. Regarding migrations during online, the results concluded that the proposed algorithms would be most effective when applied for maintenance and emergency conditions.Peer ReviewedPreprin
Identifying the NMSSM by the interplay of LHC and ILC
The interplay between the LHC and the International Linear Collider
(ILC) with GeV might be crucial for the discrimination between
the minimal and next-to-minimal supersymmetric standard model. We present an
NMSSM scenario, where the light neutralinos have a significant singlino
component, that cannot be distinguished from the MSSM by cross sections and
mass measurements. Mass and mixing state predictions for the heavier
neutralinos from the ILC analysis at different energy stages and comparison
with observation at the LHC, lead to clear identification of the particle
character and identify the underlying supersymmetric model.Comment: 8 pages, 2 eps figures, revtex4 style Contribution to the `2005
International Linear Collider Workshop - Stanford, U.S.A.
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