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ttj.py
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1# Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
2
3from ... import Logging
4from ..powheg_V2 import PowhegV2
5from ..external import ExternalMadSpin
6
7
8logger = Logging.logging.getLogger("PowhegControl")
9
10
11# Dictionary to convert the PowhegControl decay mode names to the appropriate
12# decay mode numbers understood by Powheg
13#
14# The PowhegControl decay modes with MadSpin in their name use MadSpin to
15# generate the top decays, the others use Powheg
16_decay_mode_lookup = {
17 "t t~ > all": "22222",
18 "t t~ > b j j b~ j j": "00022",
19 "t t~ > b l+ vl b~ l- vl~": "22200",
20 "t t~ > b emu+ vemu b~ emu- vemu~": "22000",
21 "t t~ > semileptonic": "11111",
22 "t t~ > undecayed" : "00000",
23 "t t~ > all [MadSpin]" : "00000", # switch off decays in Powheg and let MadSpin handle them!
24}
25
26
27class ttj(PowhegV2):
28 """! Default Powheg configuration for top pair production plus one jet.
29
30 Create a configurable object with all applicable Powheg options.
31
32 @author James Robinson <james.robinson@cern.ch>
33 """
34
35 def __init__(self, base_directory, **kwargs):
36 """! Constructor: all process options are set here.
37
38 @param base_directory: path to PowhegBox code.
39 @param kwargs dictionary of arguments from Generate_tf.
40 """
41 super(ttj, self).__init__(base_directory, "ttbarj", **kwargs)
42
43 # Add algorithms to the sequence
44 self.add_algorithm(ExternalMadSpin(process="generate p p > t t~ j [QCD]"))
45
46 # Add parameter validation functions
47 self.validation_functions.append("validate_decays")
48
49
51 self.allowed_decay_modes = sorted(_decay_mode_lookup.keys())
52
53 # Add all keywords for this process, overriding defaults if required
54 self.add_keyword("alphaem")
55 self.add_keyword("bcut")
56 self.add_keyword("bornktmin", 5.0)
57 self.add_keyword("bornonly")
58 self.add_keyword("bornsuppfact", 100.0)
59 self.add_keyword("bornzerodamp")
60 self.add_keyword("bottomthr")
61 self.add_keyword("bottomthrpdf")
62 self.add_keyword("charmthr")
63 self.add_keyword("charmthrpdf")
64 self.add_keyword("check_bad_st1")
65 self.add_keyword("check_bad_st2")
66 self.add_keyword("CKM_Vcb")
67 self.add_keyword("CKM_Vcd")
68 self.add_keyword("CKM_Vcs")
69 self.add_keyword("CKM_Vtb")
70 self.add_keyword("CKM_Vtd")
71 self.add_keyword("CKM_Vts")
72 self.add_keyword("CKM_Vub")
73 self.add_keyword("CKM_Vud")
74 self.add_keyword("CKM_Vus")
75 self.add_keyword("clobberlhe")
76 self.add_keyword('collremnsamp"')
77 self.add_keyword("colltest")
78 self.add_keyword("compute_rwgt")
79 self.add_keyword("elbranching")
80 self.add_keyword("facscfact", self.default_scales[0])
81 self.add_keyword("fastbtlbound")
82 self.add_keyword("ffltest")
83 self.add_keyword("flg_debug")
84 self.add_keyword("foldcsi", 2)
85 self.add_keyword("foldphi", 2)
86 self.add_keyword("foldy", 2)
87 self.add_keyword("fullrwgt")
88 self.add_keyword("fullrwgtmode")
89 self.add_keyword("ggproc")
90 self.add_keyword("gqbproc")
91 self.add_keyword("hdamp")
92 self.add_keyword("hfact")
93 self.add_keyword("icsimax", 3)
94 self.add_keyword("ih1")
95 self.add_keyword("ih2")
96 self.add_keyword("itmx1")
97 self.add_keyword("itmx2", 4)
98 self.add_keyword("iupperfsr")
99 self.add_keyword("iupperisr")
100 self.add_keyword("iymax", 3)
101 self.add_keyword("jacsing")
102 self.add_keyword("largecorrfact")
103 self.add_keyword("lhans1", self.default_PDFs)
104 self.add_keyword("lhans2", self.default_PDFs)
105 self.add_keyword("lhfm/bmass")
106 self.add_keyword("lhfm/cmass")
107 self.add_keyword("lhfm/emass")
108 self.add_keyword("lhfm/mumass")
109 self.add_keyword("lhfm/taumass")
110 self.add_keyword("manyseeds")
111 self.add_keyword("masswindow_high")
112 self.add_keyword("masswindow_low")
113 self.add_keyword("ncall1", 51000)
114 self.add_keyword("ncall1rm")
115 self.add_keyword("ncall2", 91000)
116 self.add_keyword("ncall2rm")
117 self.add_keyword("nubound", 11000)
118 self.add_keyword("par_2gsupp")
119 self.add_keyword("par_diexp")
120 self.add_keyword("par_dijexp")
121 self.add_keyword("par_fsrtinycsi")
122 self.add_keyword("par_fsrtinyy")
123 self.add_keyword("par_isrtinycsi")
124 self.add_keyword("par_isrtinyy")
125 self.add_keyword("parallelstage")
126 self.add_keyword("pdfreweight")
127 self.add_keyword("psgen")
128 self.add_keyword("ptmin_jet", 20.0)
129 self.add_keyword("ptsqmin")
130 self.add_keyword("ptsupp")
131 self.add_keyword("qgproc")
132 self.add_keyword("qqbproc")
133 self.add_keyword("qqpproc")
134 self.add_keyword("qqproc")
135 self.add_keyword("R_jet")
136 self.add_keyword("radregion")
137 self.add_keyword("rand1")
138 self.add_keyword("rand2")
139 self.add_keyword("renscfact", self.default_scales[1])
140 self.add_keyword("runningscale")
141 self.add_keyword("rwl_add")
142 self.add_keyword("rwl_file")
143 self.add_keyword("rwl_format_rwgt")
144 self.add_keyword("rwl_group_events")
145 self.add_keyword("semileptonic", hidden=True)
146 self.add_keyword("smartsig")
147 self.add_keyword("softtest")
148 self.add_keyword("sthw2")
149 self.add_keyword("storeinfo_rwgt")
150 self.add_keyword("testplots")
151 self.add_keyword("testsuda")
152 self.add_keyword("topdecaymode", "t t~ > all", name="decay_mode")
153 self.add_keyword("topmass")
154 self.add_keyword("topwidth")
155 self.add_keyword("ubsigmadetails")
156 self.add_keyword("use-old-grid")
157 self.add_keyword("use-old-ubound")
158 self.add_keyword("use_OLP_Interface",1)
159 self.add_keyword("withdamp")
160 self.add_keyword("withnegweights")
161 self.add_keyword("withsubtr")
162 self.add_keyword("Wmass")
163 self.add_keyword("Wwidth")
164 self.add_keyword("xupbound", 6)
165 self.add_keyword("zerowidth")
166 self.add_keyword("Zmass")
167 self.add_keyword("Zwidth")
168
169 def validate_decays(self):
170 """! Validate semileptonic and topdecaymode keywords."""
171 self.expose() # convenience call to simplify syntax
172 if self.decay_mode not in self.allowed_decay_modes:
173 error_message = "Decay mode '{given}' not recognised, valid choices are: '{choices}'!".format(given=self.decay_mode, choices="', '".join(self.allowed_decay_modes))
174 logger.warning(error_message)
175 raise ValueError(error_message)
176
177 # Check if MadSpin decays are requested.
178 # Accordingly, MadSpin will run or not run.
179 if "MadSpin" in self.decay_mode:
180 self.externals["MadSpin"].parameters_by_keyword("powheg_top_decays_enabled")[0].value = False
181 self.externals["MadSpin"].parameters_by_keyword("MadSpin_model")[0].value = "loop_sm-no_b_mass"
182 self.externals["MadSpin"].parameters_by_keyword("MadSpin_nFlavours")[0].value = 5
183
184 self.parameters_by_keyword("topdecaymode")[0].value = _decay_mode_lookup[self.decay_mode]
185 if self.decay_mode == "t t~ > semileptonic":
186 # Parameter semileptonic must be set to 1 to actually get semileptonic decays, because the topdecaymode=11111 also allows fully hadronic decays (with one up and one charm quark)
187 self.parameters_by_keyword("semileptonic")[0].value = 1
python.processes.configurable.Configurable.add_keyword
add_keyword(self, keyword, value=None, name=None, frozen=None, hidden=None, description=None, **kwargs)
Register configurable parameter that is exposed to the user.
Definition configurable.py:21
python.processes.configurable.Configurable.expose
expose(self)
Add all names to the interface of this object.
Definition configurable.py:46
python.processes.configurable.Configurable.parameters_by_keyword
parameters_by_keyword(self, keyword)
Retrieve all parameters that use a given keyword.
Definition configurable.py:57
python.processes.external.external_madspin.ExternalMadSpin
Class for running external MadSpin process.
Definition external_madspin.py:11
python.processes.powheg.ttj.ttj
Default Powheg configuration for top pair production plus one jet.
Definition ttj.py:27
python.processes.powheg.ttj.ttj.__init__
__init__(self, base_directory, **kwargs)
Constructor: all process options are set here.
Definition ttj.py:35
python.processes.powheg.ttj.ttj.allowed_decay_modes
allowed_decay_modes
List of allowed decay modes (The sorting of the list is just to increase readability when it's printe...
Definition ttj.py:51
python.processes.powheg.ttj.ttj.validate_decays
validate_decays(self)
Validate semileptonic and topdecaymode keywords.
Definition ttj.py:169
python.processes.powheg_V2.PowhegV2
Base class for PowhegBox V2 processes.
Definition powheg_V2.py:6
python.processes.powheg_base.PowhegBase.externals
dict externals
List of external processes to schedule.
Definition powheg_base.py:124
python.processes.powheg_base.PowhegBase.validation_functions
list validation_functions
List of validation functions to run before preparing runcard.
Definition powheg_base.py:127
python.processes.powheg_base.PowhegBase.add_algorithm
add_algorithm(self, alg_or_process)
Add an algorithm or external process to the sequence.
Definition powheg_base.py:156
python.processes.powheg_base.PowhegBase.default_scales
default_scales(self)
Default scale variations for this process.
Definition powheg_base.py:194
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