Freiburg 2008 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 2: Hauptvorträge II

T 2.1: Hauptvortrag

Mittwoch, 5. März 2008, 08:30–09:15, KGII-Audimax

Electroweak Physics at HERA and at the Tevatron and Searches for Higgs Bosons — •Rainer Wallny — UCLA

Recent data from HERA and the Tevatron are presented which probe the electroweak sector of the Standard Model. The polarized deep inelastic scattering cross sections measured at HERA are sensitive to the weak neutral current couplings of light quarks and to the weak propagator mass. The most precise direct measurement of the mass and width of the W boson is performed at the Tevatron. In conjunction with precision measurements of the top quark mass, the mass of the W boson constrains the mass of the as yet unobserved Higgs boson. Electroweak processes such as di-boson pair production allow the extraction of (possibly anomalous) triple gauge couplings, while single top quark production probes the weak coupling of W bosons to top and bottom quarks. The talk will also present the status of searches at the Tevatron for Higgs boson production as is predicted in the Standard Model and in its supersymmetric extensions, concluding with a brief outlook for such searches at the LHC.