8–10 Apr 2013
University of Liverpool
Europe/London timezone

Study on the production of a vector boson decaying to leptons in association with a Z or a Higgs boson decaying to a bb pair with the ATLAS experiment

9 Apr 2013, 09:21
12m
Central Teaching Hub (University of Liverpool)

Central Teaching Hub

University of Liverpool

Parallel Track 3 Track 3

Speaker

Ms Chiara Debenedetti (The University of Edinburgh)

Description

We present the latest published results on the search for a Standard Model Higgs boson produced in association with a W or a Z boson and decaying to bb with the ATLAS experiment. No significant excess is observed in the data collected : 4.7fb-1 at sqrt(s)=7TeV and 13fb-1 in sqrt(s)=8TeV. The fit procedure will be detailed, with particular emphasis on the validation method employed. As a proof of validity, WZ and ZZ production have been studied and result in a 4sigma observation at a rate compatible with the SM prediction. A Standard Model Higgs boson with mH=110GeV is excluded and the observed (expected) 95% C.L. limit on the cross section times branching ratio at mH=125GeV is evaluated at 1.8 (1.9) times the SM prediction.

Primary author

Ms Chiara Debenedetti (The University of Edinburgh)

Presentation materials