#!/usr/bin/env python3
# -*- coding: utf-8 -*-
##########################################################################
# basf2 (Belle II Analysis Software Framework) #
# Author: The Belle II Collaboration #
# #
# See git log for contributors and copyright holders. #
# This file is licensed under LGPL-3.0, see LICENSE.md. #
##########################################################################
"""
Skim list building functions for EWP inclusive skims:
B->Xgamma, B->Xll, B->Xll (LFV modes)
"""
import modularAnalysis as ma
from skim import BaseSkim, fancy_skim_header
from stdCharged import stdE, stdK, stdMu, stdPi
from stdPhotons import stdPhotons
__liaison__ = "Rahul Tiwary <rahul.tiwary@tifr.res.in>"
_VALIDATION_SAMPLE = "mdst14.root"
[docs]@fancy_skim_header
class BtoXgamma(BaseSkim):
"""
Reconstructed decay modes:
* :math:`B^+ \\to X\\gamma` inclusive
Event-level cuts:
* :math:`\\text{foxWolframR2} < 0.7` constructed using tracks with
:math:`p_T>0.1\\,\\text{GeV}` and clusters with :math:`E>0.1\\,\\text{GeV}`.
* :math:`n_{\\text{tracks}} \\geq 3`
Cuts on photons:
* :math:`\\text{clusterE9E21}>0.9`
* :math:`1.4\\,\\text{GeV}< E_{\\gamma}<3.4\\,\\text{GeV}` in CMS frame
"""
__authors__ = ["Trevor Shillington"]
__description__ = ":math:`B\\to X\\gamma` inclusive skim."
__contact__ = __liaison__
__category__ = "physics, electroweak penguins, radiative decays"
validation_sample = _VALIDATION_SAMPLE
[docs] def load_standard_lists(self, path):
stdPi("all", path=path)
stdPhotons("loose", path=path)
[docs] def build_lists(self, path):
"""Build the skim list for :math:`B \\to X\\gamma` decays."""
# event level cuts: R2 and require a minimum number of tracks + decent photons
ma.fillParticleList(decayString='pi+:BtoXgamma_eventshape', cut='pt > 0.1', path=path)
ma.fillParticleList(decayString='gamma:BtoXgamma_eventshape', cut='E > 0.1', path=path)
# Event cleanup
Event_cleanup = "nCleanedTracks(abs(dr) < 0.5 and abs(dz) < 2) >= 3"
ma.buildEventShape(inputListNames=['pi+:BtoXgamma_eventshape', 'gamma:BtoXgamma_eventshape'],
allMoments=False,
foxWolfram=True,
harmonicMoments=False,
cleoCones=False,
thrust=False,
collisionAxis=False,
jets=False,
sphericity=False,
checkForDuplicates=False,
path=path)
# Apply event cuts R2 < 0.7
path = self.skim_event_cuts(f'{Event_cleanup} and foxWolframR2 < 0.7', path=path)
# Apply gamma cuts clusterE9E21 > 0.9 and 1.4 < E_gamma < 3.4 GeV (in CMS frame)
ma.cutAndCopyList('gamma:ewp', 'gamma:loose', 'clusterE9E21 > 0.9 and 1.4 < useCMSFrame(E) < 3.4', path=path)
ma.reconstructDecay('B+:gamma -> gamma:ewp', '', path=path, allowChargeViolation=True)
return ['B+:gamma']
[docs] def validation_histograms(self, path):
# NOTE: the validation package is not part of the light releases, so this import
# must be made here rather than at the top of the file.
from validation_tools.metadata import create_validation_histograms
histogram_filename = f'{self}_Validation.root'
stdK('all', path=path)
stdPhotons('cdc', path=path)
ma.cutAndCopyList('gamma:sig', 'gamma:cdc', 'clusterNHits > 1.5 and E > 1.5', True, path)
ma.reconstructDecay('K*0:sig -> K+:all pi-:all', '0.6 < M < 1.6', path=path)
ma.reconstructDecay('B0:sig -> K*0:sig gamma:sig', '5.22 < Mbc < 5.3 and abs(deltaE)< .5', path=path)
# the variables that are printed out are: Mbc and deltaE
create_validation_histograms(
rootfile=histogram_filename,
particlelist='B0:sig',
variables_1d=[
('Mbc', 100, 5.2, 5.3, 'Signal B0 Mbc', __liaison__,
'Mbc of the signal B0', '', 'Mbc [GeV/c^2]', 'Candidates'),
('deltaE', 100, -1, 1, 'Signal B0 deltaE', __liaison__,
'deltaE of the signal B0', '', 'deltaE [GeV]', 'Candidates')
],
variables_2d=[],
path=path)
[docs]@fancy_skim_header
class BtoXll(BaseSkim):
"""
Reconstructed decay modes:
* :math:`B^+ \\to X e^+ e^-`
* :math:`B^+ \\to X e^+ e^+`
* :math:`B^+ \\to X \\mu^+ \\mu^-`
* :math:`B^+ \\to X \\mu^+ \\mu^+`
Event-level cuts:
* :math:`\\text{foxWolframR2} < 0.7` constructed using tracks with
:math:`p_T>0.1\\,\\text{GeV}` and clusters with :math:`E>0.1\\,\\text{GeV}`.
* :math:`n_{\\text{tracks}} \\geq 3`
Cuts on electrons:
* :math:`\\text{electronID} > 0.1`
* :math:`p > 0.395\\,\\text{GeV}` in lab frame
* :math:`dr<0.5` and :math:`abs(dz)<2`
Cuts on muons:
* :math:`\\text{muonID} > 0.5`
* :math:`p > 0.395\\,\\text{GeV}` in lab frame
* :math:`dr<0.5` and :math:`abs(dz)<2`
Cut on dilepton energy:
* :math:`E_{\\ell\\ell}>1.5\\,\\text{GeV}` in CMS frame.
"""
__authors__ = ["Trevor Shillington"]
__description__ = ":math:`B\\to X\\ell\\ell` (no LFV modes) inclusive skim."
__contact__ = __liaison__
__category__ = "physics, electroweak penguins, radiative decays"
validation_sample = _VALIDATION_SAMPLE
[docs] def load_standard_lists(self, path):
stdE("all", path=path)
stdMu("all", path=path)
stdPi("all", path=path)
stdPhotons("all", path=path)
[docs] def build_lists(self, path):
"""Build the skim list for :math:`B \\to X\\ell\\ell` non-LFV decays."""
# event level cuts: R2 and require a minimum number of tracks
ma.fillParticleList(decayString='pi+:BtoXll_eventshape', cut='pt > 0.1', path=path)
ma.fillParticleList(decayString='gamma:BtoXll_eventshape', cut='E > 0.1', path=path)
# Event cleanup
Event_cleanup = "nCleanedTracks(abs(dr) < 0.5 and abs(dz) < 2) >= 3"
ma.buildEventShape(inputListNames=['pi+:BtoXll_eventshape', 'gamma:BtoXll_eventshape'],
allMoments=False,
foxWolfram=True,
harmonicMoments=False,
cleoCones=False,
thrust=False,
collisionAxis=False,
jets=False,
sphericity=False,
checkForDuplicates=False,
path=path)
# Apply event cuts R2 < 0.7
path = self.skim_event_cuts(f'{Event_cleanup} and foxWolframR2 < 0.7', path=path)
# Apply electron cut p > 0.395 GeV, electronID > 0.1 + fairTrack
# Apply muon cuts p > 0.395 GeV, muonID > 0.5 + fairTrack
fairTrack = 'dr < 0.5 and abs(dz) < 2'
ma.cutAndCopyList('e+:ewp', 'e+:all', 'p > 0.395 and electronID_noTOP > 0.1 and ' + fairTrack, path=path)
ma.cutAndCopyList('mu+:ewp', 'mu+:all', 'p > 0.395 and muonID > 0.5 and ' + fairTrack, path=path)
# Apply dilepton cut E_ll > 1.5 GeV (in CMS frame)
E_dilep_cut = 'formula(daughter(0, useCMSFrame(E))+daughter(1, useCMSFrame(E))) > 1.5'
# B+ reconstruction:
# oppositely charged leptons
ma.reconstructDecay('B+:ch1 -> e+:ewp e-:ewp', E_dilep_cut, dmID=1, path=path, allowChargeViolation=True)
ma.reconstructDecay('B+:ch2 -> mu+:ewp mu-:ewp', E_dilep_cut, dmID=2, path=path, allowChargeViolation=True)
# same charge leptons
ma.reconstructDecay('B+:ch3 -> e+:ewp e+:ewp', E_dilep_cut, dmID=3, path=path, allowChargeViolation=True)
ma.reconstructDecay('B+:ch4 -> mu+:ewp mu+:ewp', E_dilep_cut, dmID=4, path=path, allowChargeViolation=True)
ma.copyLists('B+:xll', ['B+:ch1', 'B+:ch2', 'B+:ch3', 'B+:ch4'], path=path)
return ['B+:xll']
[docs] def validation_histograms(self, path):
# NOTE: the validation package is not part of the light releases, so this import
# must be made here rather than at the top of the file.
from validation_tools.metadata import create_validation_histograms
histogram_filename = f'{self}_Validation.root'
stdK(listtype='good', path=path)
stdMu(listtype='good', path=path)
ma.reconstructDecay("B+:signal -> K+:good mu+:good mu-:good", "Mbc > 5.2 and deltaE < 0.5 and deltaE > -0.5", path=path)
create_validation_histograms(
rootfile=histogram_filename,
particlelist='B+:signal',
variables_1d=[
('deltaE', 100, -0.5, 0.5, 'Signal B deltaE', __liaison__,
'deltaE of the Signal B', '', 'deltaE [GeV]', 'Candidates'),
('Mbc', 100, 5.2, 5.3, 'Signal B Mbc', __liaison__,
'Mbc of the signal B', '', 'Mbc [GeV/c^2]', 'Candidates')],
variables_2d=[],
path=path)
[docs]@fancy_skim_header
class BtoXll_LFV(BaseSkim):
"""
Reconstructed decay modes:
* :math:`B^+ \\to X e^+ \\mu^-`
* :math:`B^+ \\to X \\mu^+ e^-`
* :math:`B^+ \\to X e^+ \\mu^+`
Event-level cuts:
* :math:`\\text{foxWolframR2} < 0.7` constructed using tracks with
:math:`p_T>0.1\\,\\text{GeV}` and clusters with :math:`E>0.1\\,\\text{GeV}`.
* :math:`n_{\\text{tracks}} \\geq 3`
Cuts on electrons:
* :math:`\\text{electronID} > 0.1`
* :math:`p > 0.395\\,\\text{GeV}` in lab frame
* :math:`dr<0.5` and :math:`abs(dz)<2`
Cuts on muons:
* :math:`\\text{muonID} > 0.5`
* :math:`p > 0.395\\,\\text{GeV}` in lab frame
* :math:`dr<0.5` and :math:`abs(dz)<2`
Cut on dilepton energy:
* :math:`E_{\\ell\\ell}>1.5\\,\\text{GeV}` in CMS frame.
"""
__authors__ = ["Trevor Shillington"]
__description__ = ":math:`B\\to X\\ell\\ell` (LFV modes only) inclusive skim."
__contact__ = __liaison__
__category__ = "physics, electroweak penguins, radiative decays"
[docs] def load_standard_lists(self, path):
stdE("all", path=path)
stdMu("all", path=path)
stdPi("all", path=path)
stdPhotons("all", path=path)
[docs] def build_lists(self, path):
"""Build the skim list for :math:`B \\to X\\ell\\ell` LFV decays."""
# Create lists for buildEventShape (basically all tracks and clusters)
ma.cutAndCopyList('pi+:BtoXllLFV_eventshape', 'pi+:all', 'pt> 0.1', path=path)
ma.cutAndCopyList('gamma:BtoXllLFV_eventshape', 'gamma:all', 'E > 0.1', path=path)
# Event cleanup
Event_cleanup = "nCleanedTracks(abs(dr) < 0.5 and abs(dz) < 2) >= 3"
# buildEventShape to access R2
ma.buildEventShape(inputListNames=['pi+:BtoXllLFV_eventshape', 'gamma:BtoXllLFV_eventshape'],
allMoments=False,
foxWolfram=True,
harmonicMoments=False,
cleoCones=False,
thrust=False,
collisionAxis=False,
jets=False,
sphericity=False,
checkForDuplicates=False,
path=path)
# Apply event cuts R2 < 0.7
path = self.skim_event_cuts(f'{Event_cleanup} and foxWolframR2 < 0.7', path=path)
# Apply electron cut p > 0.395 GeV, electronID > 0.1 + fairTrack
# Apply muon cuts p > 0.395 GeV, muonID > 0.5 + fairTrack
fairTrack = 'dr < 0.5 and abs(dz) < 2'
ma.cutAndCopyList('e+:ewp', 'e+:all', 'p > 0.395 and electronID_noTOP > 0.1 and ' + fairTrack, path=path)
ma.cutAndCopyList('mu+:ewp', 'mu+:all', 'p > 0.395 and muonID > 0.5 and ' + fairTrack, path=path)
# Apply dilepton cut E_ll > 1.5 GeV (in CMS frame)
E_dilep_cut = 'formula(daughter(0, useCMSFrame(E))+daughter(1, useCMSFrame(E))) > 1.5'
# B+ reconstruction:
# oppositely charged leptons
ma.reconstructDecay('B+:lfvch1 -> e+:ewp mu-:ewp', E_dilep_cut, dmID=1, path=path, allowChargeViolation=True)
ma.reconstructDecay('B+:lfvch2 -> mu+:ewp e-:ewp', E_dilep_cut, dmID=2, path=path, allowChargeViolation=True)
# same charge leptons
ma.reconstructDecay('B+:lfvch3 -> e+:ewp mu+:ewp', E_dilep_cut, dmID=3, path=path, allowChargeViolation=True)
ma.copyLists('B+:lfv', ['B+:lfvch1', 'B+:lfvch2', 'B+:lfvch3'], path=path)
return ['B+:lfv']
