Extracting the Wavefunction of the LSP at the LHC

Details Extracting the Wavefunction of the LSP at the LHC Extracting the Wavefunction of the LSP at the LHC

2011-05-18

arxiv.org/abs/1105.3742v2

Phys.Lett.B703:151-159,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 19 figures. v2: refs updated, minor typos corrected

Scientific paper

10.1016/j.physletb.2011.07.064

We consider associated production of squarks and gluinos with the lightest supersymmetric particle (LSP), or states nearly degenerate in mass with it. Though sub-dominant to pair production of color SU(3)-charged superpartners, these processes are directly sensitive to the wavefunction composition of the lightest neutralinos. Exploiting event-shape variables -- including some introduced here for the first time -- we are able to identify the composition of the LSP by selecting events involving a single high-pT jet recoiling against missing transverse energy. We illustrate the proposed technique on a set of benchmark cases and propose methods for applying these results in more realistic experimental environments.

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