The MSSM at present and future colliders

A brief overview over the phenomenology of the MSSM at present and future colliders is given. The complementarity of indirect tests of the model via precision observables and of the information from the direct production of SUSY particles is emphasized. If the lightest Higgs boson of the MSSM will be detected, its mass will also play an important role as a precision observable.Comment: 3 pages, 3 figures, to appear in the proceedings of the International Europhysics Conference on High Energy Physics, Tampere, July 199

Belgrade - New Impressions

Questions to and Replies by Prof. Dr. Georg Meggle, Leipzig Oct 18th 200

The Impact of the Internet on Retail Competition: Evidence from Technological Differences in Internet Access

Does the internet increase competition? To address this question, I exploit two institutional details unique to Germany: (1) Some municipalities received glass fibre cables that cannot be upgraded to DSL; I use these municipalities as a treatment group with reduced online competition. (2) German law mandates resale price maintenance for books; I compare three retailing sectors, electronics (price competition), books (no price competition), and food (no online sales), to identify the effect of price competition: The effect of price competition is highly significant. Full broadband access reduces offline electronics retailers’ producer rents by 1.5 percent per year from 1999 to 2007

The European Union-Russia- China energy triangle. Bruegel Policy Contribution Issue #16 December 2019

Concern is growing in the European Union that a rapprochement between Russia and China could have negative implications for the EU. We argue that energy relations between the EU and Russia and between China and Russia influence each other. We analyse their interactions in terms of four areas: oil and gas trading, electricity exchanges, energy technology exports and energy investments. We discuss five key hypotheses that describe the likely developments in these four areas in the next decade and their potential impact on Europe: 1. There is no direct competition between the EU and China for Russian oil and gas; 2. China and the EU both have an interest in curbing excessive Russian energy rents; 3. The EU, Russia and China compete on the global energy technology market, but specialise in different technologies; 4. Intercontinental electricity exchange is unlikely; 5. Russia seems more worried about Chinese energy investments with strategic/political goals, than about EU investments. We find no evidence of a negative spillover for the EU from the developing Russia-China energy relationship.But, eventually, if these risks – and in particular the risk of structural financial disintermediation – do materialise, central banks would have various instruments to counter them