Changes between Initial Version and Version 1 of ICTP2008


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03/20/12 16:16:32 (6 years ago)
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trac
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  • ICTP2008

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     3== [http://cdsagenda5.ictp.trieste.it/full_display.php?email=0&ida=a07179  Signaling the Arrival of the LHC Era] <br><br> Top Quark Physics at the LHC == 
     4 
     5=== Authors === 
     6 
     7   * Fabio Maltoni (lecturer) 
     8 
     9=== Lectures === 
     10 
     11Find  the pdf of the 2 x 1h lectures [attachment:top_ICTP.pdf here] 
     12 
     13 
     14=== References === 
     15  
     16   * [http://www.hep.phy.cam.ac.uk/theory/webber/QCDbook.html QCD and Collider Physics]  by Keith Ellis, James Stirling, Bryan Webber (Cambridge Monographs, 1996). General introduction QCD. The section on top is an easy and efficient reading to learn the basics. 
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     18   * [http://arxiv.org/abs/hep-ph/0003033 Top physics at the LHC], by Beneke et al.  : A complete document, though a bit outdated, that covers many of the interestings studies that will be performed at the LHC. A very useful reference. 
     19   
     20   * [http://arxiv.org/abs/0805.1333 Top Physics at the LHC], by Werner Bernreuther  : A nice and up-to-date overview on top physics at the LHC. It has also a complete reference list that can be used for further studies.  
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     22   * [http://arxiv.org/abs/hep-ph/9612329 Top mass definition], by M. Smith and S.Willenbrock. This is an easy and very clear discussion  that it will make you appreciate the subtleties associated to a meaningful definition of a mass of a quark. 
     23 
     24=== Exercises === 
     25 
     26Decay 
     27 
     28   * [:TopWidth:Top width]: Calculate the width of the top quark. 
     29   * [:DeadCone:Radiation from heavy quarks]:  the dead cone in %$e^+e^- \to Q \bar Q g$%. 
     30   * [:TopDecaySpinCorrelations: W+ polarization in top decays]. 
     31 
     32Production 
     33 
     34   * [:tt:top production] : %$t \bar t$% production and single top at Tevatron vs LHC.  
     35   * [:scalar:scalar vs fermion top cross sections at hadron colliders] : Compare the production of scalar and fermion heavy color triplets in hadron collisions. 
     36   * [:SpinCorr:Spin Correlations in top production]  
     37 
     38=== Light material on the heaviest quark === 
     39 
     40   * Movies 
     41      * [http://madgraph.hep.uiuc.edu/Event/ Interactive Flash version] Note you may want to zoom in! 
     42      * [http://madgraph.hep.uiuc.edu/Event/fast_collisionx6.avi Fast movie (.avi) of collision]  
     43      * [http://madgraph.hep.uiuc.edu/Event/collision.mov Guided movie (.mov) of collision]  
     44   * Review 
     45      * [attachment:heavyweight.pdf Secrets of a heavyweight], by Kurt Riesselmann. 
     46 
     47=== Familiarize with Software.MadGraph  === 
     48 
     49A brief tutorial on Software.MadGraph / Software.MadEvent can be found [attachment:mad-tutorial.pdf here]. 
     50 
     51   * Logon to the Software.MadGraph web site and register: http://madgraph.hep.uiuc.edu.  
     52   * Familiarize with the code by generating a few processes in QED + QCD trying to guess which diagrams appear.  
     53   * Look at the new physics models and check the particle and interactions content. 
     54   * Generate events for a few selected processes and look at the plots: 
     55      * ttbar production with decays: pp>tt~>bb~mu+e-ve~vm 
     56      * Single top + Higgs: pp>tHj  (QCD=0, QED=3, j=gudsc,p=gudscb). Show that there is a large negative interference between the diagrams. 
     57 
     58Analysis Tools 
     59 
     60   * a Fortran-based package: Software.MadAnalysis ([http://madgraph.phys.ucl.ac.be/cgi-bin/NewProcess/download.cgi Download it here]) 
     61   * a Mathematica-based package: [http://www.jthaler.net/olympics/software.html Chameleon]. 
     62 
     63=== MC101 === 
     64 
     65For those interested in Monte Carlo techniques, here is a short Mathematica course with applications to top physics: 
     66 
     67   * Write the simplest integration function based on the definition of average and error 
     68   * Importance sampling via an analytic transformation 
     69   * Von Neumann's rejection method : plain and improved 
     70   * Phase space for 1 -> n particles 
     71   * Vegas 
     72   * Top decay : comparison among the various methods 
     73   * qq -> tt production 
     74 
     75All exercises are presented and solved this Mathematica Notebook:  [attachment:mc101.http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/TAE2008/mc101.nb mc101.nb]. 
     76Reference: [http://www.slac.stanford.edu/spires/find/hep/www?eprint=hep-ph/0006269 Introduction to MC methods], by [http://wwwthep.physik.uni-mainz.de/~stefanw/ Stefan Weinzierl] 
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     79-- Main.FabioMaltoni - 03 Dec 2008 
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