نتایج جستجو برای: down models 10
تعداد نتایج: 2022888 فیلتر نتایج به سال:
In this work the ultra high energy cosmic ray events recorded by the AGASA experiment are analysed. With detailed simulations of the extensive air showers initiated by photons, the probabilities are determined of the photonic origin of the 6 AGASA events for which the muon densities were measured and the reconstructed energies exceeded 10 20 eV. On this basis a new, preliminary upper limit on t...
We study the impact of the symmetry breaking patterns from supersymmetric SO(10) down to the standard model on the standard big-bang cosmology through the formation of topological defects. None of the models is consistent with the standard cosmology without invoking any mechanism to solve the monopole problem. For this purpose, we use a hybrid false vacuum inflationary scenario. Only two symmet...
Motivated by the fact that, in some realistic models combining SO(10) GUTs and flavour symmetries, it is not possible to achieve the required baryon asymmetry through the CP asymmetry generated in the decay of right-handed neutrinos, we take a fresh look on how deep this connection is in SO(10). The common characteristics of these models are that they use the see-saw with right-handed neutrinos...
This study examines the impact of expansion service sector on labour productivity growth in 10 developed economies, reaching back to late 1970s. The main research novelty is that it combines both Kaldorian and Baumolian insights develop a new shift-share decomposition that, consistent with theory, endogenises at industry level respect structural change, and, framework, includes arises from cumu...
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