By Lea Caminada

This thesis describes one of many first measurements made at CERN’s huge Hadron Collider, the world's biggest and highest-energy particle collider. the strategy of research defined within the first half is utilized to the 1st CMS collision info gathered after the LHC startup in 2010 and ends up in the 1st experimental end result for the inclusive b pass part utilizing semileptonic decays at a middle of mass strength of seven TeV. the second one a part of the thesis describes the construction and trying out of the barrel pixel detector; the writer herself performed a big position in its development, commissioning and primary exploitation.

The CMS collaboration Thesis Award Committee chosen this paintings because the most sensible thesis of the 12 months 2010

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Right fraction of mistagged b-jets as a function of the muon transverse momentum Fig. 10 Simulated distribution of reconstructed muon transverse momentum and pseudorapidity in signal events passing the event selection. 1. e. muons identified in the tracking detectors as well as in the muon chambers, pass the selection. If more than one muon is present in the event, the muon with the highest transverse momentum is chosen. The transverse momentum and pseudorapidity distributions of muons passing the event selection are shown in Fig.

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