Identification of the Origin of Monojet Signatures at the LHC

Details Identification of the Origin of Monojet Signatures at the LHC Identification of the Origin of Monojet Signatures at the LHC

2008-05-02

arxiv.org/abs/0805.0281v2

Phys.Lett.B665:361-368,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 6 figs; figure and discussions added

Scientific paper

10.1016/j.physletb.2008.06.043

Several new physics scenarios can lead to monojet signatures at the LHC. If such events are observed above the Standard Model background it will be important to identify their origin. In this paper we compare and contrast these signatures as produced in two very different pictures: vector or scalar unparticle production in the scale-invariant/conformal regime and graviton emission in the Arkani-Hamed, Dimopoulos and Dvali extra-dimensional model. We demonstrate that these two scenarios can be distinguished at the LHC for a reasonable range of model parameters through the shape of their respective monojet and/or missing $E_T$ distributions.

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