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2015:groups:higgs:morehiggs:lowmassdiphoton [2015/06/15 18:58]
david.sabes
2015:groups:higgs:morehiggs:lowmassdiphoton [2015/06/18 15:43]
camilo.carrillo
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 +====== Low Mass Higgs -> gamma gamma ======
 +
 {{2015:​groups:​higgs:​morehiggs:​selection_538.png|The logo of DokuWiki}} {{2015:​groups:​higgs:​morehiggs:​selection_538.png|The logo of DokuWiki}}
  
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       tar -xvf HepMC-2.06.09.tar.gz       tar -xvf HepMC-2.06.09.tar.gz
       cd HepMC-2.06.09/ ​       cd HepMC-2.06.09/ ​
-      ./configure --enable-shared --with-momentum=GEV --with-length=CM+      ./​configure ​--with-gzip ​--enable-shared --with-momentum=GEV --with-length=CM
       make       make
       make install       make install
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       tar -xvf pythia8209.tgz       tar -xvf pythia8209.tgz
       cd pythia8209       cd pythia8209
-      ./configure --enable-shared --with-hepmc2=../​HepMC-2.06.09+      ./configure --enable-shared --with-hepmc2=$complete path$/​HepMC-2.06.09
       make       make
       make install  ​       make install  ​
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       tar -xvf Delphes-3.2.0.tar.gz       tar -xvf Delphes-3.2.0.tar.gz
       cd Delphes-3.2.0/​       cd Delphes-3.2.0/​
-      export PYTHIA8=../pythia8209+      ​./configure --with-gzip --enable-shared --prefix=/​home/​miloc/​delphes/​pythia/​ 
 +      ​export PYTHIA8=$complete path$/pythia8209 
 +      export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:​$complete path$/​pythia8209/​lib ​
       make HAS_PYTHIA8=true DelphesPythia8       make HAS_PYTHIA8=true DelphesPythia8
 +
 +Build your pythia card, this is an example for H->gg, note that the input lhe file is defined here
 +      Main:​numberOfEvents = 100000
 +      Beams:​frameType = 4
 +      Beams:LHEF = /​home/​miloc/​lhe/​h125SM.lhe
 +      25:onMode = off
 +      25:​onIfMatch = 22 22
 +
 +      ​
  
 Finally to run Delphes, do  Finally to run Delphes, do 
       ./​DelphesPythia8 detectorcard.tcl pythiasettings.in output.root       ./​DelphesPythia8 detectorcard.tcl pythiasettings.in output.root
 +
 +For the detector card, you can use the one in Delphes-3.2.0/​cards/​ \\
 +For the pythiasettings,​ there is a working example below (which you can just store in a text file) \\
 +(you will need to specify a .lhe file. You can find some in the following links)
 +==hhxx==
 +
 +  * wget https://​test-carrillo.web.cern.ch/​test-carrillo/​higgs/​lhe/​Higgs_hhxx_scalar_nohdecay_1000GeV_13TeV.lhe.gz.orig ​
 +  * wget https://​test-carrillo.web.cern.ch/​test-carrillo/​higgs/​lhe/​Higgs_hhxx_scalar_nohdecay_100GeV_13TeV.lhe.gz.orig ​
 +  * wget https://​test-carrillo.web.cern.ch/​test-carrillo/​higgs/​lhe/​Higgs_hhxx_scalar_nohdecay_10GeV_13TeV.lhe.gz.orig ​
 +  * wget https://​test-carrillo.web.cern.ch/​test-carrillo/​higgs/​lhe/​Higgs_hhxx_scalar_nohdecay_1GeV_13TeV.lhe.gz.orig ​
 +  * wget https://​test-carrillo.web.cern.ch/​test-carrillo/​higgs/​lhe/​Higgs_hhxx_scalar_nohdecay_500GeV_13TeV.lhe.gz.orig ​
    
 +''​
 +Main:​numberOfEvents = 1000\\
 +Beams:​frameType = 4\\
 +Beams:LHEF = $complete path$/​yourfile.lhe.gz.orig\\
 +''​
 +To fix the decays of the Higgs, you have to add the following to the above pythia input card:\\
 +**In case of H->gamma gamma**\\
 +''​
 +25:onMode = off\\
 +25:​onIfMatch = 22 22\\
 +''​
 +**In case of H -> ZZ -> 4l**\\
 +''​
 +25:onMode = off\\
 +25:​onIfMatch = 23 23\\
 +23:onMode = off\\
 +23:onIfAny = 11 13 15
 +''​
 ===== Meetings ===== ===== Meetings =====
 First Meeting (Chat)Doodle:​ First Meeting (Chat)Doodle:​
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 We have 3 theoretical models (frameworks) where our final state is applicable: We have 3 theoretical models (frameworks) where our final state is applicable:
  
-Theory 1: Werner+====Theory 1====
  
-Theory 2Ulrich+Wernerin the NMSSM the lightest neutralinos/​chargino can be mainly the MSSM higgsinos. 
 +In case of a large singlet-doublet couplings, one gets sizable cross section for 
 +pp -> chi chi H_1. Here chi chi is the summation over all higgsinos which are mass degenerate within a few 
 +GeV.
  
-Theroy 3: Giacommo and Aldo+The second interesting process ist pp -> H_3 -> H_1 H_1 where the H_3 is the heaviest neutral Higgs boson.
  
-Experimental ATLAS: Nicolas+The third is pp -> t t -> W b H+ b where H+ decays into W H_1 and the later to gamma gamma.
  
-Experimental ​CMS: Camilo Benoit David+====Theory 2==== 
 +Ulrich:  
 +{{:​2015:​groups:​higgs:​morehiggs:​benchmark_point_b1_nmssm_from_arxiiv.jpg|}} 
 + 
 +====Theory 3==== 
 + 
 +Giacomo and Aldo 
 + 
 +The model consists of a scalar which is pair produced by gauge interactions:​ qq -> H' H', and VBF -> H' H'. At low mass, the kinematically allowed decays are: W gamma (charged) and gamma gamma (neutral). 
 +We can start considering a triplet of SU(2)L, with production channels H'+ H'-, and H'+ H'0. We will create a MG file asap. 
 + 
 +A sample model, with a singlet decaying in VV (but not gamma gamma): [[http://​arxiv.org/​abs/​1502.04718|1502.04718]]. More references to follow soon. 
 + 
 + 
 +====Experiment==== 
 +ATLAS: Nicolas 
 + 
 +CMS: Camilo Benoit David
  
 We are implementing a reliable model of CMS in DELPHES, the input of our software would be lhe files, the decay of the higgs can be done by us as well.... work is ongoing. ​ We are implementing a reliable model of CMS in DELPHES, the input of our software would be lhe files, the decay of the higgs can be done by us as well.... work is ongoing. ​
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 === Meeting 2: Tuesday 16th at 10:00 === === Meeting 2: Tuesday 16th at 10:00 ===
 The second Meeting takes place Tuesday 16th at 10:00 in the QCD room (main auditorium->​left) marked as (Organisers) The second Meeting takes place Tuesday 16th at 10:00 in the QCD room (main auditorium->​left) marked as (Organisers)
 +
 +=== Meeting 3: Wednesday 17th at 14:30 ===
 +Preparation of the summary slides, based on your inputs in this twiki
 +Presentation draft:
 +http://​test-carrillo.web.cern.ch/​test-carrillo/​tmp/​lhe.pdf
 +
2015/groups/higgs/morehiggs/lowmassdiphoton.txt · Last modified: 2015/06/18 15:43 by camilo.carrillo