134 research outputs found
Electroweak Supersymmetric Quantum Corrections to the Top Quark Width
Within the framework of the MSSM, we compute the electroweak one-loop
supersymmetric quantum corrections to the width of the canonical main decay of the top quark. The results are presented in
two on-shell renormalization schemes parametrized either by or .
While in the standard model, and in the Higgs sector of the MSSM, the
electroweak radiative corrections in the -scheme are rather insensitive to
the top quark mass and are of order of at most, the rest (``genuine''
part) of the supersymmetric quantum effects in the MSSM amount to a
non-negligible correction that could be about one order of magnitude larger,
depending on the top quark mass and of the region of the supersymmetric
parameter space. These new electroweak effects, therefore, could be of the same
order (and go in the same direction) as the conventional leading QCD
corrections.Comment: 26 pages + 2 tables in LaTeX, UAB-FT-323. 8 figures available upon
request ([email protected]) in tarsified, compressed and uuencoded form (1.1
Mb
Precise Prediction for M_W in the MSSM
We present the currently most accurate evaluation of the W boson mass, M_W,
in the Minimal Supersymmetric Standard Model (MSSM). The full complex phase
dependence at the one-loop level, all available MSSM two-loop corrections as
well as the full Standard Model result have been included. We analyse the
impact of the different sectors of the MSSM at the one-loop level with a
particular emphasis on the effect of the complex phases. We discuss the
prediction for M_W based on all known higher-order contributions in
representative MSSM scenarios. Furthermore we obtain an estimate of the
remaining theoretical uncertainty from unknown higher-order corrections.Comment: 38 pages, 25 figures. Minor corrections, additional reference
The Higgs resonance in vector boson scattering
A heavy Higgs resonance is described in a representation-independent way
which is valid for the whole energy range of 2 -> 2 scattering processes,
including the asymptotic behavior at low and high energies. The low-energy
theorems which follow from to the custodial SU_2 symmetry of the Higgs sector
restrict the possible parameterizations of the lineshape that are consistent in
perturbation theory. Matching conditions are specified which are necessary and
sufficient to relate the parameters arising in different expansions. The
construction is performed explicitly up to next-to-leading order.Comment: 25 pages, revtex, uses epsf, amssym
The political dynamics of portfolio design in European democracies
Austrian Research Association (ÖFG) and the Austrian Science Fund (FWF) under grant P25490
SecurePLUGandWORK – Abschlussbericht
Industrie 4.0 umfasst unter anderem intelligente Anlagenkomponenten, Maschinen und Anlagen sowie IT-Systeme, die miteinander vernetzt und über die relevanten ‚Partner\u27 mit ihren Fähigkeiten informiert sind. Bei einem Neuaufbau oder Umbau von Anlagen, Maschinen und Komponenten können alle Partner auf die Veränderung entsprechend reagieren. Änderungen sind beispielsweise in der eingebetteten Software der Feldgeräte, im Programmcode der Steuerungen, aber auch in überlagerten IT-Systemen wie bspw. MES nötig
Paleogeography and catchment evolution in a mobile orogenic belt: the Central Alps in Oligo–Miocene times
- …