Dresden 2013 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 52: Supersymmetrie 3

T 52.2: Vortrag

Dienstag, 5. März 2013, 17:00–17:15, GER-038

Search for direct stop production in 0 leptons plus b-jets final states with the ATLAS detector — •Claudia Giuliani, Thomas Barber, Francesca Ungaro, and Iacopo Vivarelli — Albert-Ludwigs-Universität, Freiburg, Deutschland

Supersymmetry is one of the most promising extensions of the Standard Model of particle physics. It solves the hierarchy problem for the Higgs boson mass and gives a good candidate for the dark matter of the universe. For these reasons, substantial efforts have been devoted to the search of supersymmetric particles since the start of the LHC run. As yet no evidence has been found for physics beyond the Standard Model, large regions of supersymmetric parameter space have been excluded. Despite the very tight lower limits on the gluinos and first two squark-generations masses, supersymmetry can still be natural if the partner of the top quark is relatively light (m_t≲ 1 TeV). This makes the search for direct production of stop squark pairs currently one of the most promising search channels.

This talk will focus on the search for direct stop production in all hadronic final states with high E_T^miss and b-jets. The dataset chosen for the analysis corresponds to the collisions data recorded by the ATLAS detector at a center of mass energy of 8 TeV during 2012 (ca. 21 fb⁻¹). I will discuss in particular the optimization of the analysis and the limit setting procedure.