yukai
1 year ago
1 changed files with 417 additions and 0 deletions
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417d0_to_ksks.py
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############################################################################### |
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# (c) Copyright 2020 CERN for the benefit of the LHCb Collaboration # |
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# # |
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# This software is distributed under the terms of the GNU General Public # |
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# Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING". # |
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# # |
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# In applying this licence, CERN does not waive the privileges and immunities # |
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# granted to it by virtue of its status as an Intergovernmental Organization # |
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# or submit itself to any jurisdiction. # |
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############################################################################### |
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""" |
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Lines to select the decay D*+ -> D0 pi+ with D0 -> KS0 KS0 and KS0 -> pi+ pi-. |
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The KS0 can be reconstructed either from long, downstream or upstream track, resulting |
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in the combinations LLLL, LLLD, LLDD, LDDD, DDDD, ULLL, ULDD. |
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""" |
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import Functors as F |
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from Functors.math import in_range |
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from GaudiKernel.SystemOfUnits import MeV, mm, GeV |
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from Moore.config import register_line_builder |
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from Moore.lines import Hlt2Line |
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from RecoConf.reconstruction_objects import make_pvs |
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from Hlt2Conf.standard_particles import make_down_pions, make_long_pions, make_up_pions |
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from Hlt2Conf.algorithms import ParticleContainersMerger |
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from Hlt2Conf.algorithms_thor import (ParticleCombiner, ParticleFilter) |
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from Hlt2Conf.lines.charm.particle_properties import _KS_M |
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from Hlt2Conf.lines.charm.prefilters import charm_prefilters |
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##################################################################### |
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### Shortcuts for filters and builders used throughout the module ### |
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##################################################################### |
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def make_tagging_pions(): |
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return ParticleFilter( |
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make_long_pions(), |
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F.FILTER(F.require_all(F.PT > 200 * MeV, F.P > 1 * GeV)), |
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) |
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def _make_long_pions_from_ks(): |
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return ParticleFilter( |
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make_long_pions(), |
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F.FILTER(F.MINIPCHI2CUT(IPChi2Cut=36., Vertices=make_pvs()))) |
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def _make_down_pions_from_ks(): |
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return ParticleFilter( |
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make_down_pions(), |
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F.FILTER(F.require_all(F.PT > 175 * MeV, F.P > 3000 * MeV))) |
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def _make_down_pions_from_ks_LD(): |
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return ParticleFilter( |
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make_down_pions(), |
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F.FILTER(F.require_all(F.PT > 100 * MeV, F.P > 2000 * MeV))) |
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def _make_up_pions_from_ks(): |
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return ParticleFilter( |
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make_up_pions(), |
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F.FILTER(F.MINIPCHI2CUT(IPChi2Cut=10., Vertices=make_pvs()))) |
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def _make_ll_ks(descriptor="KS0 -> pi+ pi-"): |
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"""Returns maker for KS0 -> pi+ pi- constructed with two long pions.""" |
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return ParticleCombiner( |
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[_make_long_pions_from_ks(), |
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_make_long_pions_from_ks()], |
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DecayDescriptor=descriptor, |
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name='Charm_D0ToKsKs_Ks_LL_{hash}', |
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CombinationCut=F.require_all( |
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in_range(_KS_M - 50 * MeV, F.MASS, _KS_M + 50 * MeV), |
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F.PT > 450 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(_KS_M - 30 * MeV, F.MASS, _KS_M + 30 * MeV), |
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F.CHI2DOF < 7, |
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in_range(-100 * mm, F.END_VZ, 500 * mm), |
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F.PT > 500 * MeV, |
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), |
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) |
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def _make_ll_ks_ULLL(descriptor="KS0 -> pi+ pi-"): |
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"""Returns maker for KS0 -> pi+ pi- constructed with two long pions only for ULLL.""" |
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return ParticleCombiner( |
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[_make_long_pions_from_ks(), |
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_make_long_pions_from_ks()], |
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DecayDescriptor=descriptor, |
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name='Charm_D0ToKsKs_Ks_LL_ULLL_{hash}', |
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CombinationCut=F.require_all( |
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in_range(_KS_M - 50 * MeV, F.MASS, _KS_M + 50 * MeV), |
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F.PT > 250 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(_KS_M - 30 * MeV, F.MASS, _KS_M + 30 * MeV), |
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F.CHI2DOF < 7, |
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in_range(-100 * mm, F.END_VZ, 500 * mm), |
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F.PT > 300 * MeV, |
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), |
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) |
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def _make_ld_ks(descriptor="KS0 -> pi+ pi-"): |
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"""Returns maker for KS0 -> pi+ pi- constructed with a long and downstream pion.""" |
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return ParticleCombiner( |
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[_make_long_pions_from_ks(), |
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_make_down_pions_from_ks_LD()], |
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DecayDescriptor=descriptor, |
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name='Charm_D0ToKsKs_Ks_LD_{hash}', |
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CombinationCut=F.require_all( |
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in_range(_KS_M - 85 * MeV, F.MASS, _KS_M + 85 * MeV), |
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F.PT > 450 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(_KS_M - 65 * MeV, F.MASS, _KS_M + 65 * MeV), |
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F.CHI2DOF < 10, |
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in_range(50 * mm, F.END_VZ, 500 * mm), |
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F.PT > 500 * MeV, |
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), |
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) |
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def _make_dd_ks(descriptor="KS0 -> pi+ pi-"): |
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"""Returns maker for KS0 -> pi+ pi- constructed with two downstream pions.""" |
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return ParticleCombiner( |
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[_make_down_pions_from_ks(), |
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_make_down_pions_from_ks()], |
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DecayDescriptor=descriptor, |
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name='Charm_D0ToKsKs_Ks_DD_{hash}', |
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CombinationCut=F.require_all( |
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in_range(_KS_M - 80 * MeV, F.MASS, _KS_M + 80 * MeV), |
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F.PT > 450 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(_KS_M - 60 * MeV, F.MASS, _KS_M + 60 * MeV), |
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F.CHI2DOF < 10, |
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in_range(300 * mm, F.END_VZ, 2275 * mm), |
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F.PT > 500 * MeV, |
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), |
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) |
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def _make_ul_ks(descriptor="KS0 -> pi+ pi-"): |
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"""Returns maker for KS0 -> pi+ pi- constructed with one long and one upstream pion.""" |
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return ParticleCombiner( |
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[_make_up_pions_from_ks(), |
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_make_long_pions_from_ks()], |
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DecayDescriptor=descriptor, |
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name='Charm_D0ToKsKs_Ks_UL_{hash}', |
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CombinationCut=F.require_all( |
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in_range(_KS_M - 90 * MeV, F.MASS, _KS_M + 90 * MeV), |
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F.PT < 5050 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(_KS_M - 70 * MeV, F.MASS, _KS_M + 70 * MeV), |
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F.CHI2DOF < 10, |
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in_range(-100 * mm, F.END_VZ, 500 * mm), |
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F.PT > 400 * MeV, |
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), |
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) |
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def _make_dstars(dzeros, pions, descriptor): |
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"""Returns maker for D*+- -> D0 pi+-.""" |
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return ParticleCombiner( |
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[dzeros, pions], |
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DecayDescriptor=descriptor, |
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name='Charm_D0ToKsKs_Dstars_{hash}', |
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CombinationCut=F.MASS - F.CHILD(1, F.MASS) < 160 * MeV, |
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CompositeCut=F.require_all( |
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F.MASS - F.CHILD(1, F.MASS) < 150 * MeV, |
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F.CHI2DOF < 25, # fix due to control channel |
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), |
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) |
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######################### |
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### Lines definition ### |
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######################### |
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all_lines = {} |
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@register_line_builder(all_lines) |
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def dst_to_d0pi_d0toksks_llll( |
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name="Hlt2Charm_DstpToD0Pip_D0ToKsKs_LLLL"): |
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pvs = make_pvs() |
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kshorts = _make_ll_ks() |
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dzeros = ParticleCombiner( |
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[kshorts, kshorts], |
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DecayDescriptor="D0 -> KS0 KS0", |
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name="Charm_D0ToKsKs_D0ToKsKs_LLLL", |
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CombinationCut=F.require_all( |
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in_range(1730 * MeV, F.MASS, 2000 * MeV), |
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F.SUM(F.PT) > 1500 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(1775 * MeV, F.MASS, 1955 * MeV), |
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F.BPVFDCHI2(pvs) > 5, |
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F.CHI2DOF < 10, # fix |
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F.BPVDIRA(pvs) > 0.9994, |
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), |
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) |
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pitag = make_tagging_pions() |
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dstarp = _make_dstars(dzeros, pitag, "D*(2010)+ -> D0 pi+") |
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dstarm = _make_dstars(dzeros, pitag, "D*(2010)- -> D0 pi-") |
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dstars = ParticleContainersMerger([dstarp, dstarm]) |
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return Hlt2Line( |
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name=name, algs=charm_prefilters() + [kshorts, dzeros, dstars]) |
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@register_line_builder(all_lines) |
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def dst_to_d0pi_d0toksks_llld_line( |
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name="Hlt2Charm_DstpToD0Pip_D0ToKsKs_LLLD"): |
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pvs = make_pvs() |
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ll_kshorts = _make_ll_ks() |
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ld_kshorts = _make_ld_ks() |
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dzeros = ParticleCombiner( |
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[ll_kshorts, ld_kshorts], |
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DecayDescriptor="D0 -> KS0 KS0", |
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name="Charm_D0ToKsKs_D0ToKsKs_LLLD", |
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AllowDiffInputsForSameIDChildren=True, |
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CombinationCut=F.require_all( |
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in_range(1730 * MeV, F.MASS, 2000 * MeV), |
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F.SUM(F.PT) > 1500 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(1775 * MeV, F.MASS, 1955 * MeV), |
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F.CHI2DOF < 10, |
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F.BPVDIRA(pvs) > 0.9994, |
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), |
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) |
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pitag = make_tagging_pions() |
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dstarp = _make_dstars(dzeros, pitag, "D*(2010)+ -> D0 pi+") |
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dstarm = _make_dstars(dzeros, pitag, "D*(2010)- -> D0 pi-") |
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dstars = ParticleContainersMerger([dstarp, dstarm]) |
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return Hlt2Line(name=name, algs=charm_prefilters() + [ld_kshorts, dzeros, dstars]) |
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@register_line_builder(all_lines) |
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def dst_to_d0pi_d0toksks_lldd( |
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name="Hlt2Charm_DstpToD0Pip_D0ToKsKs_LLDD"): |
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pvs = make_pvs() |
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dd_kshorts = _make_dd_ks() |
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ll_kshorts = _make_ll_ks() |
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dzeros = ParticleCombiner( |
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[dd_kshorts, ll_kshorts], |
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DecayDescriptor="D0 -> KS0 KS0", |
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AllowDiffInputsForSameIDChildren=True, |
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name="Charm_D0ToKsKs_D0ToKsKs_LLDD", |
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CombinationCut=F.require_all( |
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in_range(1730 * MeV, F.MASS, 2000 * MeV), |
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F.SUM(F.PT) > 1500 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(1775 * MeV, F.MASS, 1955 * MeV), |
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F.CHI2DOF < 10, |
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F.BPVDIRA(pvs) > 0.9994, |
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), |
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) |
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pitag = make_tagging_pions() |
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dstarp = _make_dstars(dzeros, pitag, "D*(2010)+ -> D0 pi+") |
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dstarm = _make_dstars(dzeros, pitag, "D*(2010)- -> D0 pi-") |
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dstars = ParticleContainersMerger([dstarp, dstarm]) |
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return Hlt2Line( |
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name=name, algs=charm_prefilters() + [dd_kshorts, dzeros, dstars]) |
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@register_line_builder(all_lines) |
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def dst_to_d0pi_d0toksks_lddd( |
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name="Hlt2Charm_DstpToD0Pip_D0ToKsKs_LDDD"): |
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pvs = make_pvs() |
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dd_kshorts = _make_dd_ks() |
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ld_kshorts = _make_ld_ks() |
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dzeros = ParticleCombiner( |
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[dd_kshorts, ld_kshorts], |
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DecayDescriptor="D0 -> KS0 KS0", |
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name="Charm_D0ToKsKs_D0ToKsKs_LDDD", |
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AllowDiffInputsForSameIDChildren=True, |
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CombinationCut=F.require_all( |
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in_range(1730 * MeV, F.MASS, 2000 * MeV), |
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F.SUM(F.PT) > 1500 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(1775 * MeV, F.MASS, 1955 * MeV), |
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F.CHI2DOF < 10, |
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F.BPVDIRA(pvs) > 0.9994, |
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), |
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) |
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pitag = make_tagging_pions() |
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dstarp = _make_dstars(dzeros, pitag, "D*(2010)+ -> D0 pi+") |
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dstarm = _make_dstars(dzeros, pitag, "D*(2010)- -> D0 pi-") |
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dstars = ParticleContainersMerger([dstarp, dstarm]) |
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return Hlt2Line( |
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name=name, algs=charm_prefilters() + [ld_kshorts, dzeros, dstars]) |
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@register_line_builder(all_lines) |
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def dst_to_d0pi_d0toksks_dddd( |
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name="Hlt2Charm_DstpToD0Pip_D0ToKsKs_DDDD"): |
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pvs = make_pvs() |
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dd_kshorts = _make_dd_ks() |
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dzeros = ParticleCombiner( |
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[dd_kshorts, dd_kshorts], |
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DecayDescriptor="D0 -> KS0 KS0", |
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name="Charm_D0ToKsKs_D0ToKsKs_DDDD", |
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CombinationCut=F.require_all( |
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in_range(1730 * MeV, F.MASS, 2000 * MeV), |
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F.SUM(F.PT) > 1500 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(1775 * MeV, F.MASS, 1955 * MeV), |
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F.CHI2DOF < 10, |
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F.BPVDIRA(pvs) > 0.9994, |
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), |
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) |
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pitag = make_tagging_pions() |
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dstarp = _make_dstars(dzeros, pitag, "D*(2010)+ -> D0 pi+") |
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dstarm = _make_dstars(dzeros, pitag, "D*(2010)- -> D0 pi-") |
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dstars = ParticleContainersMerger([dstarp, dstarm]) |
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return Hlt2Line( |
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name=name, algs=charm_prefilters() + [dd_kshorts, dzeros, dstars]) |
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@register_line_builder(all_lines) |
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def dst_to_d0pi_d0toksks_ulll( |
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name="Hlt2Charm_DstpToD0Pip_D0ToKsKs_ULLL"): |
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pvs = make_pvs() |
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ll_kshorts = _make_ll_ks_ULLL() |
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ul_kshorts = _make_ul_ks() |
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dzeros = ParticleCombiner( |
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[ll_kshorts, ul_kshorts], |
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DecayDescriptor="D0 -> KS0 KS0", |
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name="Charm_D0ToKsKs_D0ToKsKs_ULLL", |
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AllowDiffInputsForSameIDChildren=True, |
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CombinationCut=F.require_all( |
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in_range(1730 * MeV, F.MASS, 2000 * MeV), |
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F.SUM(F.PT) > 1500 * MeV, |
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), |
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CompositeCut=F.require_all( |
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in_range(1775 * MeV, F.MASS, 1955 * MeV), |
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F.CHI2DOF < 10, |
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F.BPVDIRA(pvs) > 0.9994, |
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), |
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) |
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pitag = make_tagging_pions() |
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dstarp = _make_dstars(dzeros, make_tagging_pions(), "D*(2010)+ -> D0 pi+") |
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dstarm = _make_dstars(dzeros, make_tagging_pions(), "D*(2010)- -> D0 pi-") |
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dstars = ParticleContainersMerger([dstarp, dstarm]) |
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return Hlt2Line( |
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name=name, algs=charm_prefilters() + [ul_kshorts, dzeros, dstars]) |
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@register_line_builder(all_lines) |
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def dst_to_d0pi_d0toksks_uldd( |
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name="Hlt2Charm_DstpToD0Pip_D0ToKsKs_ULDD"): |
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pvs = make_pvs() |
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dd_kshorts = _make_dd_ks() |
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ul_kshorts = _make_ul_ks() |
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dzeros = ParticleCombiner( |
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[dd_kshorts, ul_kshorts], |
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DecayDescriptor="D0 -> KS0 KS0", |
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name="Charm_D0ToKsKs_D0ToKsKs_ULDD", |
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AllowDiffInputsForSameIDChildren=True, |
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CombinationCut=F.require_all( |
||||
|
in_range(1730 * MeV, F.MASS, 2000 * MeV), |
||||
|
F.SUM(F.PT) > 1500 * MeV, |
||||
|
), |
||||
|
CompositeCut=F.require_all( |
||||
|
in_range(1775 * MeV, F.MASS, 1955 * MeV), |
||||
|
F.CHI2DOF < 10, |
||||
|
F.BPVDIRA(pvs) > 0.9994, |
||||
|
), |
||||
|
) |
||||
|
|
||||
|
pitag = make_tagging_pions() |
||||
|
|
||||
|
dstarp = _make_dstars(dzeros, pitag, "D*(2010)+ -> D0 pi+") |
||||
|
dstarm = _make_dstars(dzeros, pitag, "D*(2010)- -> D0 pi-") |
||||
|
dstars = ParticleContainersMerger([dstarp, dstarm]) |
||||
|
|
||||
|
|
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|
return Hlt2Line( |
||||
|
name=name, algs=charm_prefilters() + [ul_kshorts, dzeros, dstars]) |
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
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