Speaker
Alessandro Camboni
(Universidad de Barcelona)
Description
One of the actual greatest challenges in High Energy Physics is the discovery of the Higgs boson which is responsible for the Model Standard particles mass generation. The Higgs mass is not known and cannot be predicted by the theory. However results from previous experiments have shown that m_H^0 > 114 GeV/c2.
Below ~150 GeV/c2 the Higgs decay into two b-quarks dominates. The two quarks form a string which fragments, giving rise to hadronization in jets containing b-hadrons.
The study is focused on the mechanisms in which the Higgs boson is produced in association with a gauge boson decaying leptonically H^0 + W^\pm -> bb + l\nu and H^0 + Z^0 -> bb + ll , for Higgs masses in the range 100 - 130 GeV/c . The gauge bosons decay produces hard leptons quite often isolated from the b-jets. Hence an isolated lepton with high transverse momentum is required in order to reject the large QCD background.
The aim of this research work is precisely to assess the feasibility to observe such a light Higgs boson at the LHCb experiment at CERN by using the detector capability to identify b-hadrons. In our case, this information will be used to reconstruct b-jets.
Author
Alessandro Camboni
(Universidad de Barcelona)