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Freiburg 2008 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 17: Beyond the Standard Model (Theorie) III

T 17.5: Vortrag

Mittwoch, 5. März 2008, 17:45–18:00, KGI-HS 1021

Four Generations and Higgs PhysicsGraham D. Kribs1, Tilman Plehn2, •Michael Spannowsky3, and Tim M.P. Tait41Department of Physics and Institute of Theoretical Science, University of Oregon, Eugene — 2SUPA, School of Physics, University of Edinburgh — 3Institut für Theoretische Physik, Universität Karlsruhe — 4HEP Division, Argonne National Laboratory

A fourth generation has been considered and forgotten or discarded several times, wrongly leaving the impression that it is either ruled out or disfavored by experimental data. We revisit a fourth generation of chiral matter in the light of present electroweak precision data and deduce effects on Higgs phenomenology. We find a chiral fourth generation to be a viable model which can yield interesting signatures at the LHC, e.g. production rates are enhanced, weak-boson-fusion channels are suppressed, angular distributions are modified and Higgs pairs can be observed.

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