Doctoral Dissertation Open Access

Global Interpretation of ττ Events in the Context of the Standard Model and Beyond

Gottmann, Artur

MARC21 XML Export

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nam##2200000uu#4500</leader>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">Higgs</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">Tau Leptons</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">SM</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">MSSM</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">CMS</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">LHC</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">CERN</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">particle physics</subfield>
  </datafield>
  <controlfield tag="001">22014</controlfield>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Global Interpretation of ττ Events in the Context of the Standard Model and Beyond</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="o">oai:publish.etp.kit.edu:22014</subfield>
    <subfield code="p">user-cms</subfield>
    <subfield code="p">user-etp</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-cms</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-etp</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="a">Gottmann, Artur</subfield>
    <subfield code="u">KIT/ETP</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">thesis</subfield>
    <subfield code="b">phd-thesis</subfield>
  </datafield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2020-10-20</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">&lt;p&gt;The nature of interactions between elementary particles nowadays is successfully described by the Standard Model of particle physics (SM), with predictions covering a wide range of observed phenomena, including the existence of the Higgs boson, discovered by two independent experiments, ATLAS and CMS. Measurements of its properties are&amp;nbsp;compatible with the SM, however, there is strong belief to consider&amp;nbsp;it as part of an extended Higgs sector, motivating searches for additional heavy Higgs bosons.&lt;br&gt;
Until now, measurements of properties of the observed Higgs boson, and their interpretation in models beyond the Standard Model (BSM) in the framework of effective field theories,&amp;nbsp;are performed independently from searches for additional heavy Higgs bosons. The main topic of this thesis is to perform a unification of the two analysis approaches on the example of the H&amp;rarr;&amp;tau;&amp;tau; decay channel into one, consistent, global interpretation of&amp;nbsp;&amp;tau;&amp;tau; events, based on Run 2 CMS data at a centre of mass energy of 13 TeV and comprising 137 fb&lt;sup&gt;-1&lt;/sup&gt;.&lt;br&gt;
At first, a&amp;nbsp;measurement of signal strengths of the observed Higgs boson results in&amp;nbsp;an observed (expected) significance of&amp;nbsp;&amp;nbsp;6.1 (5.0)&amp;sigma;&amp;nbsp;for gluon fusion and 1.9 (3.8)&amp;sigma;&amp;nbsp;for vector boson fusion production channels of the Higgs boson to ensure a good expected sensitivity to the observed&amp;nbsp;Higgs boson. Then, a classic search for additional heavy Higgs bosons is performed, superseeding the current CMS results based on data collected in 2016. In the last step, the two analyses are combined into a consistent interpretation of&amp;nbsp;&amp;tau;&amp;tau; events in the framework of BSM benchmark scenarios to demonstrate an increased sensitivity to&amp;nbsp;deviations in scenario predictions for the BSM Higgs boson to be compatible with the observed Higgs boson, leading to an increased exclusion power on BSM benchmark scenarios.&lt;/p&gt;</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="s">15809186</subfield>
    <subfield code="u">https://publish.etp.kit.edu/record/22014/files/Doktorarbeit.pdf</subfield>
    <subfield code="z">md5:0c0ee29d903fb39ae4bf2799ef5fa7bc</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="041" ind1=" " ind2=" ">
    <subfield code="a">eng</subfield>
  </datafield>
  <controlfield tag="005">20210628133010.0</controlfield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="a">Wolf, Roger</subfield>
    <subfield code="u">KIT/ETP</subfield>
    <subfield code="4">ths</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="a">Quast, Günter</subfield>
    <subfield code="u">KIT/ETP</subfield>
    <subfield code="4">ths</subfield>
  </datafield>
</record>
Publication date:
October 20, 2020
Keyword(s):
Higgs Tau Leptons SM MSSM CMS LHC CERN particle physics
Awarding University:
Karlsruhe Institute of Technology (KIT)
Report Number:
ETP-KA/2020-19
Communities:

Cite as

Export