7. Multiple Selection Lines

This tutorial shows how to add multiple FunTuple algorithms running in parallel with different filters and analysing different TES locations.

from DaVinci import Options, make_config
from DaVinci.algorithms import create_lines_filter
from PyConf.reading import get_particles
from FunTuple import FunTuple_Particles as Funtuple
import FunTuple.functorcollections as FC


def main(options: Options):
    # Define a dictionary of "field name" -> "decay descriptor component".
    fields1 = {
        "Bs": "B_s0 -> (J/psi(1S) -> mu+ mu-) (phi(1020) ->K+ K-)",
        "mup": "B_s0 -> (J/psi(1S) -> ^mu+ mu-)  (phi(1020) ->K+ K-)",
        "mum": "B_s0 -> (J/psi(1S) -> mu+ ^mu-) (phi(1020) ->K+ K-)",
    }
    fields2 = {
        "B": "[B+ -> (J/psi(1S) -> mu+ mu- ) K+]CC",
        "Jpsi": "[B+ -> ^(J/psi(1S) -> mu+ mu- ) K+]CC",
        "Kp": "[B+ -> (J/psi(1S) -> mu+ mu- ) ^K+]CC",
    }

    # Define variables dictionary "field name" -> Collections of functor
    variables = {"ALL": FC.Kinematics()}

    # Load data from dst onto a TES
    turbo_line1 = "Hlt2B2CC_BsToJpsiPhi_Detached"
    input_data1 = get_particles(f"/Event/HLT2/{turbo_line1}/Particles")
    my_filter1 = create_lines_filter("HDRFilter_SeeNoEvil1", lines=[f"{turbo_line1}"])
    mytuple1 = Funtuple(
        "TDirectoryName1",
        "TTreeName1",
        fields=fields1,
        variables=variables,
        inputs=input_data1,
    )

    # If running over several sprucing lines (e.g. for calibration) one can define multiple instances of FunTuple
    turbo_line2 = "Hlt2B2CC_BuToJpsiKplus_JpsiToMuMu_Prompt"
    input_data2 = get_particles(f"/Event/HLT2/{turbo_line2}/Particles")
    my_filter2 = create_lines_filter("HDRFilter_SeeNoEvil2", lines=[f"{turbo_line2}"])
    mytuple2 = Funtuple(
        "TDirectoryName2",
        "TTreeName2",
        fields=fields2,
        variables=variables,
        inputs=input_data2,
    )

    user_algorithms = {
        "Alg1": [my_filter1, mytuple1],
        "Alg2": [my_filter2, mytuple2],
    }
    return make_config(options, user_algorithms)

To run the example:

lbexec DaVinciTutorials.tutorial7_multiple_sel_lines:main $DAVINCITUTORIALSROOT/options.yaml

For reference, these are the options of this example

testfiledb_key: DaVinciTutorials
input_manifest_file: 'root://eoslhcb.cern.ch//eos/lhcb/wg/dpa/wp3/tests/hlt2_passthrough_thor_lines.tck.json'
evt_max: 100
ntuple_file: davinci_ntuple.root
input_process: TurboPass
print_freq: 1
lumi: False
persistreco_version: 0.0