Objetivo Experimental observations at hadron accelerators and at $e^{+}e^{-}$ colliders up to an energy scale of 200 to 300 GeV have resulted in a coherent picture of the structure of matter that is adequately described by the Standard Model.The $pp$ collider LHC(CERN), scheduled to start in 2005, and high energy $e^{+}e^{-}$ linear colliders, now under study, will enable us to explore the energy range up to the TeV scale.A high energy linear collider can be operated as an $e^{+}e^{-}$ collider and as an $\gamma\gamma$ and $e\gamma$ facility where the high energy photons are generated by Compton back-scattering laser light on the electron bunches of the collider. Impressive progress has been achieved during the last few years.The TESLA collaboration has shown that gradients in excess of 25 MV/m can be obtained in superconducting accelerating structures making it possible to build a linear $e^{+}e^{-}$ collider of the TeV scale with luminosities of the order of $5-10^{34} cm^{-2}s^{-1}$ about a factor of four higher than in colliders exploiting normal conducting cavities. This is especially attractive that such a collider is expected to yield $\gamma\gamma$ and $e\gamma$ mode comparable to that in $e^{+}e^{-}$ collisions and with similar energies. This will allow the investigation of a large variety of fundamental problems which are still unresolved within the Standard Model.Some of the most fundamental questions, like the origin of mass and the unification of the fundamental interactions will be addressed at such colliders.The aim of the project proposed here is to study the physics potential of a high energy linear collider with emphasis on a comparative assessment of the $e^{+}e^{-}$ and $\gamma\gamma$, $\gamma\gamma$ options. The production and decay of the Higgs boson will be investigated as well as top quark properties, gauge boson couplings and important QCD aspects.The simulation of the reference processes in the case of $e^{+}e^{-}$ are well advanced as are the detector simulations. In case of $\gamma\gamma$, $e\gamma$ very little has been done so far and it is therefore of importance that this work can start as soon as possible. A decision on the TESLA project is expected to be taken in 2002(3) and it should be based on the physics potential of all possible collision modes. Programa(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Tema(s) 1A - Nuclear Physics, Astronomy, Astrophysics OPEN - OPEN Call Convocatoria de propuestas Data not available Régimen de financiación Data not available Coordinador Hamburg University Aportación de la UE Sin datos Dirección Notkestrasse 85 22603 Hamburg Alemania Ver en el mapa Coste total Sin datos Participantes (9) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo Institute of Mathematics Rusia Aportación de la UE Sin datos Dirección Prosp ac. Koptyug 4 630090 Novosibirsk Ver en el mapa Coste total Sin datos Institute of Teoretical and Experimental Physics Rusia Aportación de la UE Sin datos Dirección B.Cheremushkinskaya 25 117259 Moscow Ver en el mapa Coste total Sin datos Lund University Suecia Aportación de la UE Sin datos Dirección Professorsgatan1 22100 Lund Ver en el mapa Coste total Sin datos Moscow Engineering and Physics Inst. Rusia Aportación de la UE Sin datos Dirección Kashirskoe sh. 31 115409 Moscow Ver en el mapa Coste total Sin datos Moscow University Rusia Aportación de la UE Sin datos Dirección Kargopolskaya ul. 18 127562 Moscow Ver en el mapa Coste total Sin datos NIKHEF Países Bajos Aportación de la UE Sin datos Dirección Kruislaan 409 1009 DB Amsterdam Ver en el mapa Coste total Sin datos Royal Holloway University of London Reino Unido Aportación de la UE Sin datos Dirección Egham Hill TW20 0EX Egham Ver en el mapa Coste total Sin datos Siberian Branch of Russian Academy of Sciences Rusia Aportación de la UE Sin datos Dirección Lavrentiev prospekt 11 630090 Novosibirsk Ver en el mapa Coste total Sin datos University College London Reino Unido Aportación de la UE Sin datos Dirección Gower Street WC1E 6BT London Ver en el mapa Coste total Sin datos
