(r3) MatthiasHamerSandbox < Sandbox

-- Main.MatthiasHamer - 2015-03-16

---+ Long Lived Gluino Analysis

A summary of our studies so far


---++ Summary of the Model

* hard process: producing a gluino pair and additional jets

* gluino has significant livetime and forms an R-Hadron

* the R-Hadron decays into 3 or 4 partons and a neutralino

* 1 or 2 of the partons are extremely soft ( typically pT < 2 GeV )

* the remainig 2 partons can have a significant transverse momentum, depending on the mass splitting between the Gluino and the Neutralino

---++ Analysis Idea

* use the ISR jet and/or the MET from the neutralinos to trigger on the events

* use reconstructed vertices and MET to separate signal from background processes
  
  * QCD (?)
  
  * top/single top production (?)
  
  * W/Z + jets (?)
 
---++ Private MC

* so far we have used private MC for preliminary feasibility study

* used MadGraph5 2.1.2 for the hard process
  
  * so far, we have only generated pp -> go go jet / where jet is g u ~u d ~d c ~c s ~s b ~b
 
* using fragent MadGraph_matching_13TeV_cfi_py_GEN_SIM_cfg.py for running Pythia8 on the output

* have matching efficiency of roughly 10%

* using CMSSW_7_2_2_patch1 for the reconstruction

* see attached files for configuration files and MadGraph input cards

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who
txt	MadGraph_matching_13TeV_cfi_py_GEN_SIM_1000_60_large.py.txt	r2 r1	manage	5.3 K	2015-03-17 - 15:54	MatthiasHamer
txt	addNonCHSJets.py.txt	r1	manage	1.4 K	2015-03-17 - 15:34	MatthiasHamer
lhe	lhe_file_1000_60_large.lhe	r1	manage	79737.9 K	2015-03-17 - 15:59	MatthiasHamer
txt	miniAOD-prod_PAT.py.txt	r1	manage	3.3 K	2015-03-17 - 15:34	MatthiasHamer
dat	param_card.dat	r1	manage	28.1 K	2015-03-17 - 14:55	MatthiasHamer
dat	proc_card_mg5.dat	r1	manage	1.8 K	2015-03-17 - 14:55	MatthiasHamer
dat	run_card.dat	r1	manage	15.9 K	2015-03-17 - 14:55	MatthiasHamer
txt	step1_DIGI_L1_DIGI2RAW_HLT.py.txt	r1	manage	3.8 K	2015-03-17 - 15:34	MatthiasHamer
txt	step2_RAW2DIGI_L1Reco_RECO_EI_DQM.py.txt	r1	manage	3.9 K	2015-03-17 - 15:34	MatthiasHamer

Topic revision: r3 - 2015-03-17 - MatthiasHamer

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