Changes between Initial Version and Version 1 of GIFSchool

Timestamp:

Mar 20, 2012, 4:17:14 PM (13 years ago)

Author:

trac

Comment:

--

GIFSchool

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+== GIF 2007 ==
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+Three lectures are given on:
+
+   1. Basic aspects of pQCD 
+   1. Accurate predictions: NLO and NNLO calculations
+   1. Matrix element techniques 
+
+The PDF of the lectures can be found [attachment:maltoni-gif-2007.pdf here].
+
+Most of the examples and exercises are related to physics at the LHC.
+
+=== Basic aspects of QCD  ===
+
+===== Various Tests and exercises =====
+A collection of test, exercises,  and web applications on pQCD can be found  in
+[attachment:QCDGIF.pdf QCDGIF.pdf].
+
+===== Exercise on recursive relations =====
+Think about the computation of %$ q \bar q + n \gamma$% in a recursive way, by
+trying not calculate the same quantities twice. Show that the complexity of the calculation goes
+from %$n \cdot n!$% (factorial) to %$n \cdot 2^{n-1} $%  (exponential) .
+
+=== Going NLO  ===
+   
+   1. pp>H at LO (1-loop):  details of the calculation (Mathematica Notebook) [attachment:HiggsGG-LO-mtfinite.nb HiggsGG-LO-mtfinite.nb]
+   1. pp>H at NLO: details of the calculation (Mathematica Notebook) [attachment:HiggsGG-NLO.nb higgsGG-NLO.nb]
+   1. pp>H at NLO: cross section evaluation for the LHC (Mathematica Notebook+PDF libraries to be compiled) [attachment:phenHiggs.tar.gz phenHiggs.tar.gz].
+
+   A summary of  the results  can be found in [attachment:Higgs.pdf Higgs.pdf].
+ 
+=== Selected exercises on QCD that can be solved with a Matrix Element generator. ===
+
+   * [:DeadCone:Radiation from heavy quarks]:  the dead cone in %$e^+e^- \to Q \bar Q g$%.
+   * [:GluonSpin:Spin of the gluon]:  Vector vs scalar in the  angular correlations of %$ e^+ e^- \to$% 4 jets.
+   * [:2Jets:Jets] : Di-jet kinematics and rates in pp collisions. 
+   * [:3Jets:3 Jets] : Energy distributions in 3-jet events in pp collisions.
+   * [:tt:top production] : %$t \bar t$% production, Tevatron vs LHC. 
+   * [:WAsymm:Drell-Yan]: rapidity asymmetry at the Tevatron and LHC.
+   * [:TopDecaySpinCorrelations: Spin correlations in top decay], by [http://www.hep.phy.cam.ac.uk/theory/webber/ Bryan Webber].
+
+=== Monte Carlo integration ===
+
+A short introduction to the techniques of Monte Carlo integration. Exercises proposed during lecture
+are collected in this Mathematica Notebook:  [attachment:mc101.nb mc101.nb].
+
+=== LHC Phenomenology ===
+
+   * [:DiscoverTheHiggs:SM Higgs discovery at the LHC]: Three important channels
+   * [:WarmingUpChallenge:Simple Black Boxes]: New gauge bosons
+
+=== How to familiarize with Software.MadGraph ===
+
+    All exercises proposed can be "solved" or checked with Software.MadGraph / Software.MadEvent.
+    Here is how to familiarize with the code.
+
+   * Logon to the Software.MadGraph web site and register. 
+
+   * Familiarize with the code by generating a few processes in QED and QCD trying to guess which diagrams appear. What is the minimum number of jets have to be asked for in %$e^+e^-$% collisions so that the triple gauge vertex appear? 
+
+   * Look at the new physics models and check the particle and interactions content.
+
+   * Generate events for a few selected processes and look at the plots:
+      * ttbar production with decays: pp>tt~>bb~mu+e-ve~vm
+      * VV production: pp>VV> leptons, with V=Z,W.  
+      * Single top + Higgs: pp>tHj  (QCD=0, QED=3, j=gudsc,p=gudscb). Show that there is a large negative interference between the diagrams
+      
+   
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+-- Main.FabioMaltoni - 22 Sep 2007
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