Sommaire:

The LHC has been tremendously successful in pushing the limits on SUSY particle (sparticle) masses towards the TeV scale, particularly for coloured sparticles. As the production of electroweak sparticles (electroweakinos) is suppressed, the LHC is in principle less sensitive to them. However, as the bounds on the coloured sector become stronger, these channels become increasingly interesting. Moreover, constraints on the SUSY electroweak sector are particularly important for the study of dark matter (DM), as the lightest neutralino is a potential DM candidate. I will first present NLO results for chargino-neutralino production at the LHC, and discuss how the recent experimental limits from ATLAS and CMS, which are presented in terms of simplified models, can require careful interpretation. Monojet+missing transverse energy searches have attracted a lot of attention recently due to the close connection to DM, and I will further present results for the projected limits on the mass of the neutralino from LHC14. Finally, I will briefly mention some on-going work aiming to calculate electroweak corrections to DM annihilation within the soft collinear effective theory (SCET) framework.

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Pour plus d'informations, merci de contacter Frigerio M.