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Changes between Version 2 and Version 3 of WorkBook/Tutorials/Hefei


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Timestamp:
Nov 20, 2018, 11:25:52 AM (6 years ago)
Author:
Michele Selvaggi
Comment:

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  • WorkBook/Tutorials/Hefei

    v2 v3  
    2828This exercise will teach how to configure the Pythia8 event generator for a simple production of e+e- -> ZH events. Next, you will generate events and simulate the detector with the DelphesPythia8 executable.
    2929
    30 1)  First have a look at the Pythia8 configuration file "examples/Pythia8/configNoLHE.cmnd".
    31 In this card identify the parameters that control:
    32 
    33 - the number of events to be generated
    34 - the nature of the colliding beams
    35 - the center of mass energy
    36 - the physics process to be generated
    37 
    38 2) Create a Pythia8 configuration card that generates N=10k events of ee->Zh->mumu at sqrt(s)=240 GeV.
    39 
    40 Find the above process in the Pythia8 manual (Hint: under "Higgs", then "Standard-Model Higgs, basic processes"):
    41 
    42 http://home.thep.lu.se/~torbjorn/pythia81html/Welcome.html
    43 
    44 Hint1: the code of electron (positron) is 11 (-11).
    45 
    46 Hint2: the Z decay can be forced to muons with the following syntax:
     301) Create a Pythia8 configuration card that generates N=10k events of ee->Zh->mumu at sqrt(s)=240 GeV (call it "examples/Pythia8/config_ee_zh_zmumu.cmd").
    4731
    4832{{{
     33Main:numberOfEvents = 10000         ! number of events to generate
     34
     35Beams:idA = 11                   ! first beam, e- = -11
     36Beams:idB = -11                  ! second beam, e+ = 11
     37Beams:eCM = 240.                 ! CM energy of collision
     38
     39! Higgsstrahlung process
     40HiggsSM:ffbar2HZ = on
     41
     42! 5) Force the Z decays to muons
    494323:onMode = off
    504423:onIfAny = 13 -13
    5145}}}
    5246
    53 3) Produce Delphes events using the above Pythia8 configuration (this command should run Pythia and Delphes on the fly!), using the CEPC detector card "cards/delphes_card_CEPC.tcl"
     472) Produce Delphes events using the above Pythia8 configuration (this command should run Pythia and Delphes on the fly!), using the CEPC detector card "cards/delphes_card_CEPC.tcl"
    5448
    55 Hint: find the command to be executed here (adapting it to the above Delphes and Pythia8 cards of course):
    56 
    57 https://cp3.irmp.ucl.ac.be/projects/delphes/wiki/WorkBook/Pythia8
    58 
     49{{{
     50./DelphesPythia8 cards/delphes_card_CEPC.tcl examples/Pythia8/config_ee_zh_zmumu.cmd delphes_ee_zh_zmumu.root
     51}}}
    5952
    6053== II) Simple Tree analysis ==