Theory Seminar DATE: 2013-02-04 14:30 - 15:30 PLACE: Kenkyu-Honkan 1F, Meeting Room 1 TITLE: LHC Higgs Signatures from Extended Electroweak Gauge Symmetry CONTACT: Keiko Nagao, knagao-AT-post.kek.jp SPEAKER: Dr. Tomohiro Abe   (TsingHua University (China) ) LANGUAGE: English URL: http://theory-center.kek.jp/theory/archives/s_c/seminar ABSTRACT: We study LHC Higgs signatures from the extended electroweak gauge symmetry SU(2) x SU(2) x U(1). Under this gauge structure, there are two neutral Higgs states (h, H) and three new gauge bosons (W', Z'). We identify the lighter Higgs state h with mass 125GeV. The parameter space of this model is highly predictive. We study the production and decay signals of this 125GeV Higgs boson h at the LHC. We demonstrate that the h can naturally have enhanced signals in the diphoton channel gg→h→γγ, while the events rates in the reactions gg→h→WW* and gg→h→ZZ* can be same as the SM expectation. Back