Freiburg 1998 – wissenschaftliches Programm

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T: Teilchenphysik

T 407: Higgs-Bosonen II

T 407.5: Vortrag

Mittwoch, 25. März 1998, 09:30–09:45, HS G

Two-loop large Higgs mass corrections to electroweak gauge boson quartic couplings — •Georgi Jikia — Fakultät für Physik, Universität Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg

The two-loop corections to the four-vector-boson vertices growing quadratically with the Higgs mass are calculated in the Standard Model in the limit of large Higgs mass. Corrections to WWWW, WWZZ and ZZZZ vertices are found to be an order of magnitude larger than m_H² correctons to the light fermion couplings and to the triple vector boson couplings. For the Higgs mass of the order of 1 TeV the corrections are at the percent level and in principle could be observed experimentally.