Particle Physics Seminar, 16 June, 2004

Particle Physics Seminar

Date: Wednesday 16th June 2004

Title: Supersymmetric Higgs-Bosons in hadronic final states at ATLAS

Speaker: Dr Juergen Thomas (Birmingham)

One of the most important goals of the ATLAS experiment at the LHC is an experimental confirmation of Supersymmetry. This model offers an elegant solution to problems in the Standard Model, but postulates particles that could not yet be detected. The Minimal Supersymmetric extension to the Standard Model (MSSM) postulates four additional Higgs bosons, the discovery of which would be evidence for the supersymmetric model. In preparation for the operation of the ATLAS experiment, the discovery potential for MSSM-Higgs bosons is studied using Monte-Carlo simulations. The study presented here looks at the decay of heavy neutral MSSM-Higgs bosons (m(A/H) > 500 GeV) into tau pairs, which then both decay in hadronic mode. Due to the small production cross sections, high rates from QCD background and absence of a trigger lepton, the Level-1 trigger performance is of crucial importance. The study therefore also includes an estimation of the signal acceptance and trigger rates.

This Particle Physics Seminar will take place in room 106, Physics West, at 1315. Tea, coffee and biscuits will be served at 1300.