Changes between Initial Version and Version 1 of CernSummerSchool15

Timestamp:

Aug 14, 2015, 3:19:53 PM (9 years ago)

Author:

Benjamin Fuks

Comment:

--

CernSummerSchool15

@@ +1 @@
+== 2015 CERN Summer student workshop ==
+
+=== Animations ===
+   * [http://madgraph.hep.uiuc.edu/Event/ Interactive Flash version] Note you may want to zoom in!
+   * [http://madgraph.hep.uiuc.edu/Event/fast_collisionx6.avi Fast movie (.avi) of collision]
+   * [http://madgraph.hep.uiuc.edu/Event/collision.mov Guided movie (.mov) of collision]
+   * [http://www.thedailyshow.com/watch/thu-april-30-2009/large-hadron-collider John Ellis on Daily Show]
+
+=== Exercises ===
+
+Discover the Higgs at the LHC:
+   * Find the best prediction for Higgs production at the LHC [http://maltoni.web.cern.ch/maltoni/TeV4LHC/index.html here].
+   * Find the Higgs branching ratios [attachment:h-br.pdf here].
+
+Choose a channel and investigate signal and background:
+
+   1. The 4 lepton final state: $pp \to H\to Z Z \to e^+e^- \mu^+ \mu^-$ 
+      * Signal Plots: [attachment:h4l-signal-lhe.pdf Parton Level] [attachment:h4l-signal-lhco.pdf Detector Level]
+      * Background Plots: [attachment:h4l-lhe.pdf Parton Level] [attachment:h4l-lhco.pdf Detector Level]
+   1. Top associated production $pp \to t\bar tH$ with $H \to b \bar b$ 
+      * Signal + Background Plots: [attachment:ttbb-lhe.pdf Parton Level] [attachment:ttbb-lhco.pdf Detector Level]
+
+=== The Challenge ===
+
+Three "black boxes" are given, in the form of event files in the LHC Olympics format and a series of selected plots:
+
+   * Box A : [attachment:A.lhco.gz Events] Plots: [attachment:A-lhe.pdf Parton level] [attachment:A.pdf Detector level]
+   * Box B : [attachment:B.lhco.gz Events] Plots: [attachment:B-lhe.pdf Parton level] [attachment:B.pdf Detector level]
+   * Box C : [attachment:C.lhco.gz Events] Plots: [attachment:C-lhe.pdf Parton level] [attachment:C.pdf Detector level]
+
+Black boxes contain only signal events. The students are asked to pair up the boxes above with the following models and also answer to the questions:
+
+   * Model 1 : Extra Z (zp) : What is its mass? Does it have Standard Model couplings to fermions?
+   * Model 2 : Heavy Scalar (h): What is its mass? Is it a SM Higgs?
+   * Model 3 : Extra W (wp+ or wp-) : What its mass? Does it have Standard Model couplings to fermions?
+
+Useful extra information:
+   * In the plots $H_T=\sum ||p_T^{vis}|| + E_T^{miss}$.
+   * A SM-like Z' would decay (more or less democratically) into: jet jet (uu~,cc~,dd~,ss~,bb~), t tbar (tt~), lept+lept- (e+e-,mu+mu-,ta+ta-), neutrino anti-neutrino (ve ve~,vm vm~,vt vt~). It could also have couplings to SM W and Z, and in that case would decay in to ZZ and W+W-.
+   * An Higgs couple to particles with a strength which is proportional to the particle masses. A SM-like heavy H would decay in to t tbar (tt~), W+W-, ZZ.
+   * A SM-like W'+ would decay into: jet jet (ud~,cs~), t b (tb~), lept neutrino (e+ ve , mu+ vm, ta+ vt). It could also have couplings to SM W and Z, and in that case would decay in to ZW.
+
+* [http://www.youtube.com/watch?v=j50ZssEojtM LHC_Rap]
+
+=== Slides ===
+    *  [attachment:mg5_lectures.pdf Download here]