Hidden Extra U(1) at the Electroweak/TeV Scale

Details Hidden Extra U(1) at the Electroweak/TeV Scale Hidden Extra U(1) at the Electroweak/TeV Scale

2010-06-25

arxiv.org/abs/1006.5019v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 5 figures

Scientific paper

We propose a simple extension of the Standard Model (SM) by adding an extra U(1) symmetry which is hidden from the SM sector. Such a hidden U(1) has not been considered before, and its existence at the TeV scale can be explored at the LHC. This hidden U(1) does not couple directly to the SM particles, and couples only to new SU(2)_L singlet exotic quarks and singlet Higgs bosons, and is broken at the TeV scale. The dominant signals at the high energy hadron colliders are multi lepton and multi b-jet final states with or without missing energy. We calculate the signal rates as well as the corresponding Standard Model background for these final states. A very distinctive signal is 6 high p_T b-jets in the final state with no missing energy. For a wide range of the exotic quarks masses the signals are observable above the background at the LHC.

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