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2015:groups:higgs:morehiggs:lowmassdiphoton [2015/06/17 15:10]
giacomo.cacciapaglia
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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       export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:​$complete path$/​pythia8209/​lib ​       export LD_LIBRARY_PATH=$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 
Line 112: Line 123:
 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 1Werner: in the NMSSM the lightest neutralinos/​chargino can be mainly the MSSM higgsinos.+====Theory 1==== 
 + 
 +Werner: in 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 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 pp -> chi chi H_1. Here chi chi is the summation over all higgsinos which are mass degenerate within a few
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 The third is pp -> t t -> W b H+ b where H+ decays into W H_1 and the later to gamma gamma. The third is pp -> t t -> W b H+ b where H+ decays into W H_1 and the later to gamma gamma.
  
-Theory 2Ulrich+====Theory 2==== 
 +Ulrich
 {{:​2015:​groups:​higgs:​morehiggs:​benchmark_point_b1_nmssm_from_arxiiv.jpg|}} {{:​2015:​groups:​higgs:​morehiggs:​benchmark_point_b1_nmssm_from_arxiiv.jpg|}}
  
-Theroy ​3Giacomo and Aldo+====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). 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. 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: [[http://​arxiv.org/​abs/​1502.04718|1502.04718]].+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.
  
  
-Experimental ​ATLAS: Nicolas+====Experiment==== 
 +ATLAS: Nicolas
  
-Experimental ​CMS: Camilo Benoit David+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. ​
2015/groups/higgs/morehiggs/lowmassdiphoton.txt · Last modified: 2015/06/18 15:43 by camilo.carrillo