Two jets and missing $E_T$ signature to determine the spins of the new particles

Details Two jets and missing $E_T$ signature to determine the spins of the new particles Two jets and missing $E_T$ signature to determine the spins of the new particles

2011-01-14

arxiv.org/abs/1101.2701v3

JHEP 1106:047,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 9 figures

Scientific paper

10.1007/JHEP06(2011)047

We consider the spin determination of new colored particles in the missing energy plus jets channel at the early stage of LHC. We use a three site moose model to describe the low energy Lagrangian of all same spin partner (LHT or UED like) models and check the gauge invariance of the amplitude. For the benchmark production and decay channel $pp \rightarrow U^{(R)} U^{(R)} \rightarrow u u B_H B_H$, in contrast to those in supersymmetric models, there are spin correlations which affect the polar and azimuthal angle distributions of the quarks from the heavy partner $U^{(R)}$ decay. We show such effects would be visible in the $E_{\rm T miss} / M_{\rm eff}$ distribution and the reconstructed azimuthal angle correlation using MAOS reconstruction.

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