Difference between revisions of "Master student Projects"

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! style="background:#3399ff;" | <font color=#ffffff> 2) Searching for a supersymmetric partner of the top quark </font>
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! style="background:#3399ff;" | <font color=#ffffff> 2) Optimizing supersymmetry searches at the 13 TeV LHC </font>
 
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''' Supervisors:'''  Paul de Jong (staf), Carolina Deluca (post-doc) and Pierfrancesco Butti (PhD student)
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''' Supervisors:'''  Paul de Jong (staf) and Ingrid Deigaard (PhD student)
  
  
 
''' Research description: '''
 
''' Research description: '''
  
The goal of this project is to search for a partner of the heaviest quark in the Standard Model, the top quark, as predicted by various theories of new physics beyond the Standard Model. A supersymmetric top quark partner in particular is well motivated: it could be relatively light, i.e. accessible at the LHC, and solve some of the problems of the Standard Model such as the stability of the Higgs mass. Searching for a supersymmetric partner of the top quark at the LHC is difficult: Standard Model top quark production processes form a significant background. In this project we will try to attack this with advanced multi-variate analysis techniques. Eventually, the goal is to examine all ATLAS data collected at 8 TeV for a possible signal.
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When the LHC restarts in 2015, it will do so at a center-of-mass energy of 13 TeV, significantly higher than the 8 TeV reached so far. The higher energy is very important for the searches for new massive particles in theories of physics beyond the Standard Model. Supersymmetry is a well motivated model that predicts heavy partners of quarks and gluons, these partners may be detectable with sufficient data at 13 TeV. Compared to the earlier results, the analysis at 13 TeV is challenging, and needs major reoptimization. In this master project, we will look at the trigger, at new discrimination variables, and at new models.
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Also for this project, computer skills and affinity with programming are required. You become a member of a small, international team with regular meetings.
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Revision as of 18:46, 12 May 2014