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Bonn 2010 – scientific programme

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T: Fachverband Teilchenphysik

T 26: Gittereichtheorie II

T 26.8: Talk

Tuesday, March 16, 2010, 18:30–18:45, HG XIII

Non perturbative analysis of the Higgs boson from a chiral invariant lattice Higgs-Yukawa model — •Jim Kallarackal1,2, Philipp Gerhold1,2, and Karl Jansen21Humboldt Universitaet zu Berlin, Newstonstr. 15, 12489 Berlin — 2DESY Zeuthen, Platanenallee, 15738 Zeuthen

The focus of our work is the the non perturbative analysis of the Higgs boson on a discretized space time lattice. Our work makes use of the Neuberger overlap operator which satisfies an exact chiral symmetry on the lattice. Former studies on the lattice Higgs model involving fermions were lacking a consistent formulation of the chiral symmetry on the lattice. The systematic treatment of the Higgs-Yukawa model enables us to address phenomenological questions of the standard model Higgs sector such as triviality, mass bounds and decay pa- rameters. Our framework enables us to investigate the unstable nature of the Higgs boson and compute its resonance mass as well as its decay width.

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