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T: Teilchenphysik

T 207: Test des Standardmodells II

T 207.6: Vortrag

Dienstag, 11. März 2003, 15:15–15:30, SFO11

Two-loop electroweak corrections at TeV energies — •Stefano Pozzorini — Institut für Theoretische Teilchenphysik, Universität Karlsruhe (TH), D-76128 Karlsruhe

In the TeV energy range, electroweak radiative corrections are enhanced by large logarithms of the ratio of the energy scale to the electroweak scale. At future linear e⁺e⁻ colliders such logarithmic contributions exceed the ten-percent level at one loop. Thus control of two-loop electroweak corrections becomes mandatory in order to achieve the envisaged experimental precision at the few-permille level. Recent progress in the evaluation of two-loop electroweak corrections at high energies is reviewed.