Difference between revisions of "Master student Projects"
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[http://arxiv.org/pdf/1203.0930.pdf Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays] | [http://arxiv.org/pdf/1203.0930.pdf Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays] | ||
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| + | <!-- Comment Marcel 2014 | ||
| + | {| border="1" cellpadding="2" cellspacing="0" | ||
| + | |- | ||
| + | ! style="background:#3399ff;" | <font color=#ffffff> 5) Search for a light Higgs in the decay Sigma+ -> p mu mu </font> | ||
| + | |} | ||
| + | |||
| + | ''' Supervisors:''' Francesco Dettori (postdoc), Antonio Pellegrino (staf), Siim Tolk (PhD) | ||
| + | |||
| + | |||
| + | ''' Research description: ''' | ||
| + | |||
| + | The decay Sigma+ -> p mu mu is very rare in the Standard Model. In 2005 the | ||
| + | HyperCP experiment has seen first evidence of this decay, but with a very peculiar | ||
| + | feature: all the three observed events have the same di-muon invariant mass... This | ||
| + | could be due to new particles (a very light Higgs?) in the decay of the type | ||
| + | Sigma+ -> p X decay, with X a new particle decaying into two muons. | ||
| + | The search for this decay at LHCb is important both to confirm this very rare | ||
| + | process and to search for possible new phenomena. | ||
| + | |||
| + | For this project computer skills are needed. The ROOT programme and C++ and/or | ||
| + | Python macros are used. This is a small project, where the student can perform | ||
| + | his research in an independent way. | ||
| + | |||
| + | This research will likely result in an official LHCb publication. | ||
| + | |||
| + | |||
| + | ''' Relevant information: ''' | ||
| + | |||
| + | HyperCP Collaboration, Phys. Rev. Lett. 94, 021801 (2005) | ||
| + | [http://arxiv.org/abs/hep-ex/0501014 Evidence for the decay Sigma+ -> p mu mu] | ||
| + | |||
| + | X.-G. He, J. Tandean, G. Valencia, Phys. Rev. Lett. 98, 081802 (2007) | ||
| + | [http://arxiv.org/abs/hep-ph/0610362 Has HyperCP Observed a Light Higgs Boson?] | ||
| + | End comment Marcel --> | ||
<!-- Comment Marcel 2014 | <!-- Comment Marcel 2014 | ||
Revision as of 09:57, 18 July 2014
Projects for Master students in the Nikhef B-physics (LHCb) group
date: May 2014
This is an overview with all available Master student projects in the Nikhef B-physics (LHCb) group.
If you have your own research proposal, need more detailed information on the
(availability) of individual proposals or would like to discuss about other available
projects in the group you are always welcome to contact
either the contact person for the project and/or the Nikhef B-physics group leader:
Marcel Merk [e-mail: i93_at_nikhef.nl, Tel 020-5925107, Nikhef room N2xx]
For an overview of the theses written in the Nikhef B-physics group you can look at the Nikhef LHCb theses page
Master projects in the Nikhef B-physics group
| 1) Study of long-living particles |
|---|
Supervisors: Wouter Hulsbergen (staf) and Veerle Heijne (PhD)
Research description:
Supersymmetry is potentially the key to understand the Dark Matter in the Universe. Within the SUSY framework, long-living supersymmetric particles can exist, which can be detected by the LHCb detector. The search for these particles will be performed on the recent data set recorded in 2012, and some work is also needed on the trigger selection, to prepare for data taking in 2015, when the LHC will be running at a higher center-of-mass energy.
For this project computer skills are needed. The ROOT programme and C++ and/or Python macros are used. You become part of our research group (~5 persons); we have weekly video meetings with colleagues at CERN.
Relevant information:
Master thesis Suzanne Klaver (2013): A Search for Long-lived Neutralinos in LHCb
| 2) Searching for Lorentz Invariance Violation with Bs -> J/psi phi decays |
|---|
Supervisors: Gerhard Raven (staf), Jeroen van Tilburg (Postdoc)
Research description:
The measurement of CP violation occurring in decays of the type Bs-->J/psi phi is a flagship analysis in the LHCb experiment. However, no-one in LHCb has tested whether CPT symmetry is violated. CPT symmetry is tightly connected to the principle of Lorentz invariance. Lorentz invariantz violation would become visible if the decay rate would show any dependency to a fixed direction in space. In this project the CP violation analysis is extended to test for Lorentz Invariance violation.
For this project computer skills are needed. The ROOT programme and C++ and/or Python macros are used. This is a project that is closely related to the larger effort at Nikhef (~5 people) of measuring phi_s with Bs->J/psiPhi decays. Weekly video meetings with CERN coordinate the efforts within the LHCb collaboration.
Relevant information:
Belle Collaboration: arXiv:1203.0930v2, Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays