Münster 2017 – wissenschaftliches Programm

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

T: Fachverband Teilchenphysik

T 10: Suche nach Dunkler Materie 1 (LHC)

T 10.3: Vortrag

Montag, 27. März 2017, 17:15–17:30, VSH 116

Sensitivity optimisation of the search for Dark Matter produced in association with a Higgs boson decaying to a pair of b quarks with the ATLAS detector at √s=13 TeV using 36 fb-1 of data — •Daniel Narrias-Villar and Oleg Brandt — Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg

The recent discovery of the Higgs boson motivates collider-based searches for new physics models, where Dark Matter is produced in association with a Higgs boson. The signature of this search is a pair of b quarks from the Higgs boson decay, recoiling against missing transverse momentum from Dark Matter particle(s). To increase the sensitivity of the search, various studies are performed and applied in the analysis. The dominant background from ttbar production is reduced by about 70% for a signal loss of about 10%; as a result the irreducible background from Z(vv)+jets production became the dominant background contribution. These improvements result in a substantial increase of sensitivity of up to 50%. In case of no significant excess, limits at 95% confidence level over a parameter phase space of signal models will be provided using 36 fb-1 of data.