Difference between revisions of "Bachelor student Projects"

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achterhalen hoe daarop het beste de spin-richting van het top-quark kan worden bepaald. Dit kan
 
achterhalen hoe daarop het beste de spin-richting van het top-quark kan worden bepaald. Dit kan
 
vervolgens met de ATLAS data worden vergeleken, indien de tijd dat toestaat.
 
vervolgens met de ATLAS data worden vergeleken, indien de tijd dat toestaat.
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{| border="1"  cellpadding="2" cellspacing="0"
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|-
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! style="background:#339999;" | <font color=#ffffff> 2) Accurate measurement of the mass of the Higgs particle </font>
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|}
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''' Supervisors:'''  Ivo van Vulpen (staf) and Antonio Castelli (PhD student)
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''' Research description: '''
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The ATLAS detector allows to measure the mass of the
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Higgs boson, recently discovered in 2012.
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This measurement is a crucial test for the validity of the
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Standard Model, the theory that describes the interaction
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among elementary particles.
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The student will be guided through the strategy of the
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measurement of the Higgs boson mass from the measurement
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of the mass of the four leptons produced in one of its possible
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decay.
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The student's task will be to study the impact of the er-
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ror distribution of the four leptons mass in the final mea-
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surement of the Higgs mass. In order to do that he/she will
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learn the fundamental notions of statistical data analysis us-
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ing the ROOT software. He/she will then be asked to study
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the simulated ATLAS data to understand the main sources of
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uncertainty on the momentum of the reconstructed particles.
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Schedule
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week 1: Small introduction about theory and ATLAS experiment
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week 2: Introduction to ROOT and Higgs to four lepton event selection
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week 3/4: Creation and study of four lepton distribution of mass and error
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week 4/5: Creation and study of four lepton distribution of mass and error
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week 6/7: Closer look at events with large error, where does it come from?
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week 8/9: Closer look at events with large error, where does it come from?
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week 10: Presentation of the results
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week 11: Writing and discussion
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week 12: Writing and discussion

Revision as of 16:30, 31 January 2014