1 | Delphes 4 LHCb
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2 | ==============
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3 |
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4 | The card "delphes_card_LHCb.tcl" contains a preliminary parametrization of the LHCb detector.
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5 |
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6 | - ParticlePropagator
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7 |
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8 | particles are propagated in a constant B field.
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9 |
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10 | - ChargedHadronMomentumSmearing/ElectronEnergySmearing/MuonMomentumSmearing
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11 |
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12 | charged particles momenta are smeared according to detector resolution
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13 |
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14 | - TrackMerger
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15 |
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16 | charged particles are merged into single collection for simpler future processing
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17 |
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18 | - ImpactParameterSmearing
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19 |
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20 | charged particles transverse IP are smeared according to known LHCb tracking
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21 | performance.
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22 |
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23 |
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24 | - IdentificationMap
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25 |
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26 | This module is a recent addition in order to map particle misidentification rates
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27 | and reconstruction efficiencies.
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28 |
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29 | An example is given in the card but can be expanded if needed.
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30 |
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31 | - ECAL/HCAL
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32 |
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33 | Calorimeter modules are used to parametrize the energy response and angular
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34 | resolution of neutral objects such as photons/neutral hadrons.
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35 |
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36 | - TreeWriter
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37 |
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38 | user specifies here which collections are stored in the output.
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39 | By default tracks, neutral hadrons and photons are stored in this card.
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40 | Tracks contain muons, electrons, and charged hadrons.
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41 |
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42 |
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43 | Quick start with Delphes
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44 | ========================
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45 |
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46 | 1) Compile:
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47 |
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48 | make
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49 |
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50 | 2) Simulate p p -> b b~ events
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51 |
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52 | wget http://cp3.irmp.ucl.ac.be/downloads/pp_bb.hep.gz
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53 | gunzip pp_bb.hep.gz
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54 | ./DelphesSTDHEP cards/delphes_card_LHCb.tcl delphes_output.root pp_bb.hep
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55 |
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56 |
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57 | For more details, please visit:
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58 |
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59 | https://cp3.irmp.ucl.ac.be/projects/delphes
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60 |
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61 |
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62 | Configure Delphes on lxplus.cern.ch
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63 | ====================================
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64 |
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65 | git clone git://github.com/delphes/delphes.git Delphes
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66 |
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67 | cd Delphes
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68 |
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69 | source /afs/cern.ch/sw/lcg/external/gcc/4.9.3/x86_64-slc6/setup.sh
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70 |
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71 | source /afs/cern.ch/sw/lcg/app/releases/ROOT/6.06.00/x86_64-slc6-gcc49-opt/root/bin/thisroot.sh
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72 |
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73 | make
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74 |
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