Changes between Initial Version and Version 1 of X


Ignore:
Timestamp:
03/20/12 16:17:13 (7 years ago)
Author:
trac
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • X

    v1 v1  
     1
     2
     3=== Discover New gauge bosons at the LHC ===
     4
     5Three "black boxes" are given, in the form of event files in the LHC Olympics format and a series of selected plots:
     6
     7
     8   * Box A : [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/A.lhco.gz Events]  Plots:  [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/A.pdf Detector level]   ([http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/A-lhe.pdf Parton level])
     9   * Box B : [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/B.lhco.gz Events]   Plots:  [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/B.pdf Detector level]   ([http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/B-lhe.pdf Parton level]) 
     10   * Box C : [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/C.lhco.gz Events]  Plots:  [http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/C.pdf Detector level]   ([http://cp3wks05.fynu.ucl.ac.be/twiki/pub/Physics/DiscoverTheHiggs/C-lhe.pdf Parton level])
     11
     12Black 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:
     13
     14   * Model 1 : Extra Z (zp) : What its mass? Does it have Standard Model couplings to fermions?
     15   * Model 2 : Heavy Scalar (h): What its mass?  Is it a SM Higgs?
     16   * Model 3 : Extra W (wp+ or wp-) : What its mass? Does it have Standard Model couplings to fermions?
     17 
     18Useful extra information:
     19   * In the plots %$H_T=\sum ||p_T^{vis}|| + E_T^{miss}$%.
     20   * 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-.
     21   * 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.   
     22   * 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.
     23
     24
     25
     26-- Main.FabioMaltoni - 28 Aug 2008
     27
     28