11–13 Apr 2012
Ferrara
Europe/Rome timezone

Search for H ->tau tau in production processes in association with jets in CMS

12 Apr 2012, 15:45
10m
Aula Magna (Ferrara)

Aula Magna

Ferrara

Rettorato dell'Università di Ferrara Via Savonarola 9
Presentazione 12 minuti Fisica del Modello Standard e oltre Modello Standard e oltre

Speaker

Riccardo Manzoni (Milano Bicocca)

Description

The analysis performed on the data collected by CMS during 2011, has excluded at 95% CL the possible existence of a SM-like Higgs boson in most of the mass region that has been explored, except for a window from 110 to 128 Gev/c2 In the search for a light Higgs boson, the di- nal state plays a crucial role, thanks to its sizeable branching ratio and to the expected relatively low background contaminations. In addition, couplings to tau leptons are favored in the Minimal Supersymmetric Stan- dard Model (MSSM), making the di- channel sensitive to BSM Higgs bosons as well. The production in association with jets, namely the Vector Boson Fusion (VBF) in the SM and b-quark associated production in the MSSM, presents a better signal-to-background ratio with respect to the gluon-fusion process, despite the low eciency due to the selection of the signature jets. The inclusion of these production processes in the combined analysis considerably improves the sensitivity of the Higgs search of the tau pair nal state. The CMS results, based on the 2011 Data analysis and corresponding to 4.6 fb􀀀1 are presented and discussed along with the experimental issues related to the reconstruction of events in associated production processes.

Primary author

Riccardo Manzoni (Milano Bicocca)

Presentation materials