D0

Presentation

The D0 experiment was located at the proton-antiproton Tevatron collider at  the Fermilab laboratory (Chicago, USA). There was two data taking periods: Run I from 1992 to 1996 with a center of mass energy of 1.8 TeV, and Run II from 2001 to 2011 with a center of mass energy of 1.96 TeV. Before the advent of the LHC, the Tevatron was the most energetic collider in the world and the only collider where the top quark as well as possibly a Higgs boson could be produced.

D0 is made of several sub-detectors allowing to address a wide spectrum of physics subjects within the Standard Model such as top quark production and properties measurements, QCD, W and Z gauge bosons studies, and b-quark physics. The D0 experiment also allowed to search for the Higgs boson as well as new physics beyond the Standard Model such as supersymmetry and extra-dimensions.

D0 is a large international collaboration: around 400 physicists are signing the latest D0 publications. Irfu/SPP was one of the first foreign institute that join the collaboration in the middle of the 80's.

 

 

Irfu contributions

Main physics topics:

  • W and Z production
  • Single top quark production
  • Top quark pair production, top quark mass, other properties (forward-backward asymmetries, polarization, spin correlation)
  • Search for supersymmetric Higgs boson and Standard Model Higgs boson
  • Production of jets

Technical contributions:

  • Build of a transition radiation detector used from 1992 to 1996;
  • Build of an optical connecting device (FIC) used by the trigger system since 2001 ;
  • Studies of improvements to the calorimeter trigger system at Level 1 for Run IIb (2006-2011)
    • Build of prototype boards "ADF" for the L1 calorimeter trigger system:  digitization from signal arising from the calorimeter and digital processing of the signal using digital filtering;
    • Build of the card distributing synchronization signals;
    • Build of test boards;
    • Development of dedicated softwares
    • mid-2005: commissioning of the triggering system

Scientific responsibilities:

  • In charge of the muon reconstruction software (2000-2003) ;
  • Convenership of the QCD group (2002-2004) ;
  • Convenership of the muon identification and reconstruction group (2002-2003, 2005-2008);
  • Convenership of the  "Common Samples" group (2003-2010) ;
  • Convenership of the Jet Energy Scale group (2004-2006) ; 
  • In chage of the software controlling the calorimeter data quality (2005-2007) ;
  • In charge of two editorial boards reviewing the search for supersymmetric signatures with leptons (2006-2012) ;
  • Convenership of the sub-group top-quark physics in dilepton final states (2007-2008).
  • Convership of the top quark physics group  (2008-2013)
  • Convership of the task force on muon momentum resolution (2009-2010)
  • Convenership of the tau identification group (since 2009)
  • D0 representative in the Tevatron+LHC top quark combination group (since 2011)
  • Convenership of the Vector boson + jets group (2008-2012)
  • Convenership of the Higgs boson group  (2012-2013).
  • Convenership of the top/Higgs  group (2013-2014).
  • Convenership of the top/Higgs/electroweak group  (Since 2014).
  • D0 Physics coordinator (since 2015)


Contact

Boris Tuchming

 

Last update : 02/09 2017 (2214)

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