Difference between revisions of "Master student Projects"

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=== Projects for Master students in the Nikhef B-physics (LHCb) group ===
 
=== Projects for Master students in the Nikhef B-physics (LHCb) group ===
  
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date: March 2017
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date: Dec 2017
  
 
This is an overview with all available Master student projects in the Nikhef B-physics (LHCb) group.
 
This is an overview with all available Master student projects in the Nikhef B-physics (LHCb) group.
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either the contact person for the project and/or the Nikhef B-physics group leader:
 
either the contact person for the project and/or the Nikhef B-physics group leader:
  
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Marcel Merk [e-mail: i93_at_nikhef.nl, Tel 020-5925107, Nikhef room N2xx]
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Marcel Merk [e-mail: i93_at_nikhef.nl, Tel 020-5925107, Nikhef room N243]
  
 
For an overview of the theses written in the Nikhef B-physics group you can look at the
 
For an overview of the theses written in the Nikhef B-physics group you can look at the
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with the Nikhef R&D group can also be envisaged.
 
with the Nikhef R&D group can also be envisaged.
  
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! style="background:#3399ff;" | <font color=#ffffff> 6) Exclusive production of Z->mumu </font>
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''' Supervisors:''' Wouter Hulsbergen
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''' Research description: '''
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Central exclusive production at the LHC is a process in which particles are produced without dissociation of the incident protons. The events are characterised by the fact that the detector is almost empty. The exclusive production of Z bosons is very cleanly predicted in the standard model. In this project we study the exclusive production of dimuons via Z->mumu in LHCb run 2 data. The analysis requires an excellent understanding of the underlying event. In particular, we plan to improve background rejection by increasing the reconstruction efficiency for tracks with very large angles in the vertex detector.
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! style="background:#3399ff;" | <font color=#ffffff> 7) The Z forward backward asymmetry </font>
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''' Supervisors:''' Wouter Hulsbergen
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''' Research description: '''
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The forward backward asymmetry of Z->mumu decays probes the standard model weak mixing angle, providing a strong test of the standard model. A dominating systematic uncertainty in this measurement is the affect of detector misalignments. In this project Z->mumu events are used to improve the detector alignment and thereby increase the precision of the run-2 measurements.
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! style="background:#3399ff;" | <font color=#ffffff> 8) Construction of the velo upgrade detector</font>
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''' Supervisors:''' Wouter Hulsbergen
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''' Research description: '''
  
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Nikhef contributes to the upgraded LHCb detector (installation 2019-2020) with the construction of vertex detector modules. In this project the student participates in the construction at Nikhef, in particular in R&D studies to determine the optimize the �gluing� process (early 2018), and the analysis of the first test data taken with built modules (spring/summer 2018).
  
  
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! style="background:#3399ff;" | <font color=#ffffff> 9) *Probing the dark sector with Y(1S)->4mu events* </font>
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''' Supervisors:''' Wouter Hulsbergen
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''' Research description: '''
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In certain parts of their parameter space Hidden Valley theories predict upsilon decays to two new dark sector particles that subsequently decay into two muons. These particles may or may not be long-lived. In this project we search for such events in LHCb run-2 data using the Turbo stream.
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! style="background:#3399ff;" | <font color=#ffffff> 10) Measurement of the relative efficiency of muons and electrons with J/psi->ll decays </font>
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''' Supervisors:''' Patrick Koppenburg
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''' Research description: '''
  
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LHCb has produced intriguing results hinting at violation of lepton universality. As extraordinary claims require extraordinary evidence we propose to perform a measurement of the relative reconstruction efficiency of electrons and muons by comparing the number of J/psi particles counted in the di-electron and di-muon final states.
  
 
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Revision as of 17:11, 14 December 2017

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