Contact
Simon de Visscher
Position
Former member
Member from October 2015
Current position: Data Analytics Expert @ Gamaya (CH)
Member from October 2015
Current position: Data Analytics Expert @ Gamaya (CH)
Dissertations, status,...
June 2004: Graduate diploma.
September 2005: DEA (master) diploma
September 2005 - October 2009
October 2009 - September 2012
October 2012-September 2015
September 2015-...
Dissertation: Analyse de topologies à un lepton dur lors de processus associés à un Higgs se désintégrant en deux bosons W
September 2005: DEA (master) diploma
Report:Identification et sélection des leptons produits lors de la production associée d'un boson de Higgs et d'une paire de quarks top-antitop dans l'expérience CMS
September 2005 - October 2009
PhD Thesis and as research assistant: work related to the modelling of collision in hadron-hadron colliders, on the BSM phenomenology particularly on 2HDM, and associated discovery potentials in general, in CMS in particular
October 2009 - September 2012
PostDoc at Universität Zürich (http://www.unipublic.uzh.ch/): work on CMS pixel commissioning and performance, B-physics, collision modeling,...
October 2012-September 2015
Fellow at CERN in the CMS group. Activities: Studies of SM V+HF process, Higgs search, b-tagging activities
September 2015-...
Chargé de Recherche F.N.R.S. Fields of activity: Standard Model, Higgs search, CMS tracker simulation, hadronic collision modeling,...
Projects
Research directions:
Experiments and collaborations:
Active projects
Non-active projects
Data analysis in HEP, astroparticle and GW experiments
Detector commissioning, operation and data processing
Phenomenology of elementary particles
Detector commissioning, operation and data processing
Phenomenology of elementary particles
Experiments and collaborations:
Active projects
CMS Tracker commissioning and performance assessment
Christophe Delaere
The CMS silicon strip tracker is the largest device of its type ever built. There are 24244 single-sided micro-strip sensors covering an active area of 198m2.
Physics performance of the detector are being constantly assessed and optimized as new data comes.
Members of UCL are playing a major role in the understanding of the silicon strip tracker and in the maintenance and development of the local reconstruction code.
External collaborators: CMS tracker collaboration.
The CMS silicon strip tracker is the largest device of its type ever built. There are 24244 single-sided micro-strip sensors covering an active area of 198m2.
Physics performance of the detector are being constantly assessed and optimized as new data comes.
Members of UCL are playing a major role in the understanding of the silicon strip tracker and in the maintenance and development of the local reconstruction code.
External collaborators: CMS tracker collaboration.
Search for Higgs boson(s) in CMS at the LHC in the llbb topology
Agni Bethani, Jérôme de Favereau, Christophe Delaere, Vincent Lemaitre
Search for Higgs boson(s) within the Standard Model and beyond and also withing a minimal extension of the scalar sector (2HDM).
The final state under study is a Z decaying into a lepton pair associated with two b-jets. This topology is sensitive to a light SM Higgs via the associate ZH production, as well as a middle mass range SM Higgs boson via the inclusive Higgs production followed by its decay into ZZ with one Z decaying into a lepton pair and the other into bbar.
It is also very sensitive to the production of a non standard heavy Higgs boson decaying into Z plus A (pseudo scalar Higgs boson).
Similar selection (but outside of the Z window) is also sensitive to H->aa->llbb, with "a" a generic light scalar.
External collaborators: CMS collaboration.
Search for Higgs boson(s) within the Standard Model and beyond and also withing a minimal extension of the scalar sector (2HDM).
The final state under study is a Z decaying into a lepton pair associated with two b-jets. This topology is sensitive to a light SM Higgs via the associate ZH production, as well as a middle mass range SM Higgs boson via the inclusive Higgs production followed by its decay into ZZ with one Z decaying into a lepton pair and the other into bbar.
It is also very sensitive to the production of a non standard heavy Higgs boson decaying into Z plus A (pseudo scalar Higgs boson).
Similar selection (but outside of the Z window) is also sensitive to H->aa->llbb, with "a" a generic light scalar.
External collaborators: CMS collaboration.
Non-active projects
Publications in IRMP
All my publications on Inspire
Number of publications as IRMP member: 12
Last 5 publications
More publications
Number of publications as IRMP member: 12
Last 5 publications
2020
CP3-20-33: Test beam demonstration of silicon microstrip modules with transverse momentum discrimination for the future CMS tracking detector
CMS Tracker Collaboration
[Journal] [Full text]
Published in: JINST 13 (2018) 03, P03003, Report number: FERMILAB-PUB-18-385-CMS, CERN-CMS-NOTE-2017-010
O. Bondu5, S. Brochet5, A. Caudron5, S. De Visscher5, B. Francois5, A. Jafari5, J. Cabrera Jamoulle5, M. Komm5, G. Krintiras5, A. Magitteri5, A. Mertens5, D. Michotte5, M. Musich5,, L. Quertenmont5, M. Vidal Marono5,
Refereed paper. July 2.
[Journal] [Full text]
Published in: JINST 13 (2018) 03, P03003, Report number: FERMILAB-PUB-18-385-CMS, CERN-CMS-NOTE-2017-010
O. Bondu5, S. Brochet5, A. Caudron5, S. De Visscher5, B. Francois5, A. Jafari5, J. Cabrera Jamoulle5, M. Komm5, G. Krintiras5, A. Magitteri5, A. Mertens5, D. Michotte5, M. Musich5,, L. Quertenmont5, M. Vidal Marono5,
Refereed paper. July 2.
2017
2016
CP3-16-19: Search for A/H to Z(ll)+H/A(bb) with 2015 data
2009
More publications
Talks outside UCL
23rd September 05:BND Summer school: First look at ttH, H->WW associated productions in CMS
02nd December 05: CERN (Higgs Meeting): search for ttH->WW with two same sign leptons leptons
18th april 2007: Munich (DIS2007): Madgraph/MadEvent at work, from QCD to new physics
25th may 2007: Liege (PHD student day): Study of scalar sector with associated production of Higgs bosons and top quarks.
5th june 2007 : CERN (Top meeting): Production of ttbar + jets samples with MadGraph/MadEvent.
16th july 2007 : CERN (Top meeting): Lastest development of matching in MadGraph/MadEvent.
13th November 2007 : SUSY-GDR workshop: Extra-jet radiations in inclusive SUSY sample and SM backgrounds
February 08: Talks at LCG, Atlas MC meeting: Multi-jet process generation
March 08: CMS generator meeting: status of mas production for CMS
June 08: SUSY08 (Seoul - invited talk): radiation of extra-jet in inclusive SUSY processes
July 08: CERN: radiation of extra-jet in inclusive SUSY processes
December 08: CERN : MadGraph tutorial, running the code and gridpack preparation
March 09: Nikhef; QCD radiation in the production of heavy colored particles at the LHC (th. seminar)
March 10: CEA/Saclay: Unconventional phenomenology of a minimal 2HDM
June 10: IPRD 10 (Siena): Evaluation of the CMS pixel detector performances from the first LHC collisions
June 10: SPG10 (Basel): First results from the CMS experiment
June 11: Pheno11 (Madison): Recent heavy flavour results from the CMS experiment
April 12: LPCC CERN: V+HF studies in CMS
July 12: ICHEP 2012 (Melbourne): Heavy flavor quark production in association (or not) with vector bosons in CMS
November 12: LPCC (CERN): Recent V+HF results in ATLAS and CMS
January 14: HepMC WG (CERN): Future use of HepMC in CMS
October 14: ERC workshop (CERN): ME+PS merging in Madgraph5+Pythia8
Kruger 14 (South Africa): Review of Standard Model studies in CMS
March 15: Collider X-talk (CERN): Joint ATLAS and CMS seminar on V+jets
August 15: Lepton-Photon 2015 (Ljubljana): QCD measurements at high P_{T} (invited, plenary)
Teaching duties
UCL - 2005-2009
U.Zürich 2009-2012
PHY 1113 (I):Mechanics (Ex + Labos) 1q
PHY 1113 (II): Hydrodynamics, Electricity, thermodynamics (Ex + Labo)
PHY 1210: Electromagnetism, waves machanics, modern physics (Ex) 2q
PHYS 2362: Data Processing in Physics 1
PHY 1113 (II): Hydrodynamics, Electricity, thermodynamics (Ex + Labo)
PHY 1210: Electromagnetism, waves machanics, modern physics (Ex) 2q
PHYS 2362: Data Processing in Physics 1
U.Zürich 2009-2012
Different laboratories for undergraduate students (optics, nuclear physics, electromagnetism,...)
Nuclear and particle physics exercises.
Nuclear and particle physics exercises.
PhD supervision
Oct 2009-Aug 2010
June 2011-Dec 2012
Co-supervisor of PhD student (T.Rommerskirschen) at U. Zürich.
Context : study of multi-jet events for SUSY discovery.
Context : study of multi-jet events for SUSY discovery.
June 2011-Dec 2012
Supervisor of PhD student (C.Favaro) at U.Zürich.
Context : Analysis of the associated production of dilepton final states and heavy-flavour quarks.
Context : Analysis of the associated production of dilepton final states and heavy-flavour quarks.