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Single Neutralino production at CERN LHC ![]() Auteur(s): Gounaris G. J., Layssac Jacques, Porfyriadis P. I., Renard F. M.
(Article) Publié:
Physical Review D, vol. 71 p.075012.1 (2005)
Texte intégral en Openaccess : Ref HAL: hal-00259264_v1 Ref Arxiv: hep-ph/0411366 DOI: 10.1103/PhysRevD.71.075012 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 5 citations Résumé: The common belief that the lightest supersymmetric particle (LSP) might be a neutralino, providing also the main Dark Matter (DM) component, calls for maximal detail in the study of the neutralino properties. Motivated by this, we consider the direct production of a single neutralino $\tchi^0_i$ at a high/energy hadron collider, focusing on the $\tchi^0_1$ and $\tchi^0_2$ cases. At Born level, the relevant subprocesses are $q\bar q\to \tchi^0_i \tilde g$, $g q\to \tchi^0_i \tilde q_{L,R}$ and $q\bar q'\to \tchi^0_i\tchi^\pm_j$; while at 1-loop, apart from radiative corrections to these processes, we consider also $gg\to \tchi^0_i\tilde{g}$, for which a numerical code named PLATONgluino is released. The relative importance of these channels turns out to be extremely model dependent. Combining these results with an analogous study of the direct $\tchi^0_i\tchi^0_j$ pair production, should help in testing the SUSY models and the Dark Matter assignment. Commentaires: 20 pages |