April 27, 2020 Master Thesis Open Access

Schillinger, Bettina

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    <subfield code="a">&lt;p&gt;In this thesis, the investigation of the cross section ratio of two established processes&lt;br&gt;
occurring in proton-proton collisions is performed. This choice is motivated by the fact,&lt;br&gt;
that the comparison of two separate measurements in the form of cross section ratios&lt;br&gt;
promises to benefit from reduced uncertainties.&lt;br&gt;
The first observable of interest is the inclusive dijet cross section. Dijet events are occurring&lt;br&gt;
at high rates at the LHC, due to the abundant production of jets at hadron colliders.&lt;br&gt;
Investigation of the dijet spectrum allows for tests of QCD, as the particles within the jets follow the laws of the strong nuclear force. Furthermore, these QCD events are&lt;br&gt;
the background for many other physics searches, and consequently have to be precisely&lt;br&gt;
understood in order to increase the accuracy of other measurements. Another advantage&lt;br&gt;
of the dijet event topology is the fact that it covers a wide kinematic range.&lt;br&gt;
The second process of choice is the inclusive Z+jet cross section. The Z boson has been&lt;br&gt;
studied in various experiments and its properties are very well known. This process allows&lt;br&gt;
for precise measurements, because it leaves a clear signal in the detector. Together with&lt;br&gt;
the leading jet in the Z+jet event, this final state can be studied in an analogous manner&lt;br&gt;
as the dijet final state.&lt;br&gt;
&amp;nbsp;&lt;/p&gt;</subfield>
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    <subfield code="a">Measurement of the Ratio of inclusive Jet  Cross Sections in Events with and without a high-pT Z Boson</subfield>
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    <subfield code="a">Schillinger, Bettina</subfield>
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    <subfield code="a">Rabbertz, Klaus</subfield>
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    <subfield code="a">Voutilainen, Mikko</subfield>
    <subfield code="u">University of Helsinki/HIP</subfield>
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