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| 3 | == (Accurate simulation) tools for collider physics TASI 2013 == |
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| 5 | 3 Lectures MC's developments for the LHC. |
| 6 | |
| 7 | The PDF of the lectures be found here: |
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| 9 | [attachment:TASI1.pdf MC1: From Lagrangians to Fixed order calculations] |
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| 11 | [attachment:TASI2.pdf MC2: Parton showers] |
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| 13 | [attachment:TASI3.pdf MC3: Merging and matching] |
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| 15 | The examples and exercises are related to physics at the LHC. |
| 16 | |
| 17 | === Basic aspects of QCD === |
| 18 | |
| 19 | |
| 20 | ===== Various Tests and exercises ===== |
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| 22 | A collection of test, exercises, and web applications on pQCD can be found in [https://cp3.irmp.ucl.ac.be/projects/madgraph/attachment/wiki/CernSchool2011/QCD-exercises.pdf QCD-exercises.pdf]. |
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| 24 | === Going NLO === |
| 25 | |
| 26 | 1. pp>H at LO (1-loop): details of the calculation (Mathematica Notebook) [https://cp3.irmp.ucl.ac.be/projects/madgraph/attachment/wiki/CernSchool2011/HiggsGG-LO-mtfinite.nb HiggsGG-LO-mtfinite.nb] |
| 27 | 1. pp>H at NLO: details of the calculation (Mathematica Notebook) [https://cp3.irmp.ucl.ac.be/projects/madgraph/attachment/wiki/CernSchool2011/HiggsGG-NLO.nb higgsGG-NLO.nb] |
| 28 | 1. pp>H at NLO: cross section evaluation for the LHC (Mathematica Notebook+PDF libraries to be compiled) [https://cp3.irmp.ucl.ac.be/projects/madgraph/attachment/wiki/CernSchool2011/phenHiggs.tar.gz phenHiggs.tar.gz]. |
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| 30 | A summary of the results can be found in [attachment:QCDHiggs.pdf QCDHiggs.pdf]. |
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| 32 | === Selected exercises on QCD that can be solved with a Matrix Element generator. === |
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| 34 | * [wiki:DeadCone Radiation from heavy quarks]: the dead cone in $e^+e^- \to Q \bar Q g$. |
| 35 | * [wiki:GluonSpin Spin of the gluon]: Vector vs scalar in the angular correlations of $ e^+ e^- \to$ 4 jets. |
| 36 | * [wiki:2Jets Jets] : Di-jet kinematics and rates in pp collisions. |
| 37 | * [wiki:3Jets 3 Jets] : Energy distributions in 3-jet events in pp collisions. |
| 38 | * [wiki:Tt top production] : $t \bar t$ production, Tevatron vs LHC. |
| 39 | * [wiki:WAsymm Drell-Yan]: rapidity asymmetry at the Tevatron and LHC. |
| 40 | * [wiki:TopDecaySpinCorrelations Spin correlations in top decay], by [http://www.hep.phy.cam.ac.uk/theory/webber/ Bryan Webber]. |
| 41 | |
| 42 | === Monte Carlo integration === |
| 43 | |
| 44 | 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]. |
| 45 | |
| 46 | === LHC Phenomenology === |
| 47 | |
| 48 | * [wiki:DiscoverTheHiggs SM Higgs discovery at the LHC]: Three important channels |
| 49 | * [wiki:WarmingUpChallenge Simple Black Boxes]: New gauge bosons |
| 50 | |
| 51 | === How to familiarize with MadGraph === |
| 52 | |
| 53 | All exercises proposed can be "solved" or checked with MadGraph / MadEvent. Here is how to familiarize with the code. |
| 54 | |
| 55 | * Logon to the MadGraph web site and register. |
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| 57 | * 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? |
| 58 | |
| 59 | * Look at the new physics models and check the particle and interactions content. |
| 60 | |
| 61 | * Generate events for a few selected processes and look at the plots: |
| 62 | * ttbar production with decays: pp>tt~>bb~mu+e-ve~vm |
| 63 | * VV production: pp>VV> leptons, with V=Z,W. |
| 64 | * 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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| 66 | -- Main.FabioMaltoni - 2013-03-03 |
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