Cel 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. Program(-y) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Temat(-y) 1A - Nuclear Physics, Astronomy, Astrophysics OPEN - OPEN Call Zaproszenie do składania wniosków Data not available System finansowania Data not available Koordynator Hamburg University Wkład UE Brak danych Adres Notkestrasse 85 22603 Hamburg Niemcy Zobacz na mapie Koszt całkowity Brak danych Uczestnicy (9) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko Institute of Mathematics Rosja Wkład UE Brak danych Adres Prosp ac. Koptyug 4 630090 Novosibirsk Zobacz na mapie Koszt całkowity Brak danych Institute of Teoretical and Experimental Physics Rosja Wkład UE Brak danych Adres B.Cheremushkinskaya 25 117259 Moscow Zobacz na mapie Koszt całkowity Brak danych Lund University Szwecja Wkład UE Brak danych Adres Professorsgatan1 22100 Lund Zobacz na mapie Koszt całkowity Brak danych Moscow Engineering and Physics Inst. Rosja Wkład UE Brak danych Adres Kashirskoe sh. 31 115409 Moscow Zobacz na mapie Koszt całkowity Brak danych Moscow University Rosja Wkład UE Brak danych Adres Kargopolskaya ul. 18 127562 Moscow Zobacz na mapie Koszt całkowity Brak danych NIKHEF Niderlandy Wkład UE Brak danych Adres Kruislaan 409 1009 DB Amsterdam Zobacz na mapie Koszt całkowity Brak danych Royal Holloway University of London Zjednoczone Królestwo Wkład UE Brak danych Adres Egham Hill TW20 0EX Egham Zobacz na mapie Koszt całkowity Brak danych Siberian Branch of Russian Academy of Sciences Rosja Wkład UE Brak danych Adres Lavrentiev prospekt 11 630090 Novosibirsk Zobacz na mapie Koszt całkowity Brak danych University College London Zjednoczone Królestwo Wkład UE Brak danych Adres Gower Street WC1E 6BT London Zobacz na mapie Koszt całkowity Brak danych
