WW.py

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# Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
 
from AthenaCommon import Logging
from ..powheg_V2 import PowhegV2
 

logger = Logging.logging.getLogger("PowhegControl")
 
 
class WW(PowhegV2):
    """! Default Powheg configuration for W-boson pair production including interference for identical leptons.
 
    Create a configurable object with all applicable Powheg options.
 
    @author James Robinson  <james.robinson@cern.ch>
    """
 
    def __init__(self, base_directory, **kwargs):
        """! Constructor: all process options are set here.
 
        @param base_directory: path to PowhegBox code.
        @param kwargs          dictionary of arguments from Generate_tf.
        """
        super(WW, self).__init__(base_directory, "WW", **kwargs)
 
        # Add parameter validation functions
        self.validation_functions.append("validate_decays")
 
        
        self.allowed_decay_modes = ["w+ w- > e+ ve e- ve~", "w+ w- > mu+ vm mu- vm~", "w+ w- > tau+ vt tau- vt~",
                                    "w+ w- > e+ ve mu- vm~", "w+ w- > mu+ vm e- ve~", "w+ w- > e+ ve tau- vt~",
                                    "w+ w- > tau+ vt e- ve~", "w+ w- > mu+ vm tau- vt~", "w+ w- > tau+ vt mu- vm~",
                                    "w+ w- > e+ ve mu- vm~ / mu+ vm e- ve~", "w+ w- > e+ ve tau- vt~ / tau+ vt e- ve~",
                                    "w+ w- > mu+ vm tau- vt~ / tau+ vt mu- vm~", "w+ w- > l+ vl l'- vl'~",
                                    "w+ w- > j j j j", "w+ w- > l+ vl j j / j j l- vl~"]
 
        # Add all keywords for this process, overriding defaults if required
        self.add_keyword("bornktmin")
        self.add_keyword("bornonly")
        self.add_keyword("bornsuppfact")
        self.add_keyword("bornzerodamp")
        self.add_keyword("bottomthr")
        self.add_keyword("bottomthrpdf")
        self.add_keyword("btildeborn")
        self.add_keyword("btildecoll")
        self.add_keyword("btildereal")
        self.add_keyword("btildevirt")
        self.add_keyword("btlscalect")
        self.add_keyword("btlscalereal")
        self.add_keyword("charmthr")
        self.add_keyword("charmthrpdf")
        self.add_keyword("check_bad_st1")
        self.add_keyword("check_bad_st2")
        self.add_keyword("clobberlhe")
        self.add_keyword("colltest")
        self.add_keyword("compress_lhe")
        self.add_keyword("compress_upb")
        self.add_keyword("compute_rwgt")
        self.add_keyword("delg1_g")
        self.add_keyword("delg1_z")
        self.add_keyword("delk_g")
        self.add_keyword("delk_z")
        self.add_keyword("doublefsr")
        self.add_keyword("dronly")
        self.add_keyword("evenmaxrat")
        self.add_keyword("facscfact", self.default_scales[0])
        self.add_keyword("fastbtlbound")
        self.add_keyword("fixedgrid")
        self.add_keyword("fixedscale")
        self.add_keyword("flg_debug")
        self.add_keyword("foldcsi")
        self.add_keyword("foldphi")
        self.add_keyword("foldy")
        self.add_keyword("fullrwgt")
        self.add_keyword("fullrwgtmode")
        self.add_keyword("hdamp")
        self.add_keyword("hfact")
        self.add_keyword("icsimax")
        self.add_keyword("ih1")
        self.add_keyword("ih2")
        self.add_keyword("itmx1", 4)
        self.add_keyword("itmx1rm")
        self.add_keyword("itmx2", 5)
        self.add_keyword("itmx2rm")
        self.add_keyword("iupperfsr")
        self.add_keyword("iupperisr")
        self.add_keyword("iymax")
        self.add_keyword("lambda_g")
        self.add_keyword("lambda_z")
        self.add_keyword("lhans1", self.default_PDFs)
        self.add_keyword("lhans2", self.default_PDFs)
        self.add_keyword("lhapdf6maxsets")
        self.add_keyword("lhrwgt_descr")
        self.add_keyword("lhrwgt_group_combine")
        self.add_keyword("lhrwgt_group_name")
        self.add_keyword("lhrwgt_id")
        self.add_keyword("LOevents")
        self.add_keyword("manyseeds")
        self.add_keyword("max_io_bufsize")
        self.add_keyword("maxseeds")
        self.add_keyword("minlo")
        self.add_keyword("mintupbratlim")
        self.add_keyword("mintupbxless")
        self.add_keyword("ncall1", 40000)
        self.add_keyword("ncall1rm")
        self.add_keyword("ncall2", 80000)
        self.add_keyword("ncall2rm")
        self.add_keyword("ncallfrominput")
        self.add_keyword("noevents")
        self.add_keyword("novirtual")
        self.add_keyword("nubound", 30000)
        self.add_keyword("olddij")
        self.add_keyword("par_2gsupp")
        self.add_keyword("par_diexp")
        self.add_keyword("par_dijexp")
        self.add_keyword("parallelstage")
        self.add_keyword("pdfreweight")
        self.add_keyword("ptsqmin")
        self.add_keyword("ptsupp")
        self.add_keyword("radregion")
        self.add_keyword("rand1")
        self.add_keyword("rand2")
        self.add_keyword("renscfact", self.default_scales[1])
        self.add_keyword("runningwidth")
        self.add_keyword("rwl_add")
        self.add_keyword("rwl_file")
        self.add_keyword("rwl_format_rwgt")
        self.add_keyword("rwl_group_events")
        self.add_keyword("skipextratests")
        self.add_keyword("smartsig")
        self.add_keyword("softtest")
        self.add_keyword("stage2init")
        self.add_keyword("storeinfo_rwgt")
        self.add_keyword("storemintupb")
        self.add_keyword("testplots")
        self.add_keyword("testsuda")
        self.add_keyword("tevscale")
        self.add_keyword("ubexcess_correct")
        self.add_keyword("ubsigmadetails")
        self.add_keyword("use-old-grid")
        self.add_keyword("use-old-ubound")
        self.add_keyword("withdamp")
        self.add_keyword("withnegweights")
        self.add_keyword("withsubtr")
        self.add_keyword("WpWmevev", "w+ w- > l+ vl l'- vl'~", name="decay_mode", hidden=False)
        self.add_keyword("WpWmevmuv")
        self.add_keyword("WpWmevtauv")
        self.add_keyword("WpWmmuvev")
        self.add_keyword("WpWmmuvmuv")
        self.add_keyword("WpWmmuvtauv")
        self.add_keyword("WpWmtauvev")
        self.add_keyword("WpWmtauvmuv")
        self.add_keyword("WpWmtauvtauv")
        self.add_keyword("WWevmuv")
        self.add_keyword("WWevtauv")
        self.add_keyword("WWlvlv")
        self.add_keyword("WWlvqq")
        self.add_keyword("WWmuvtauv")
        self.add_keyword("WWqqqq")
        self.add_keyword("xgriditeration")
        self.add_keyword("xupbound")
        self.add_keyword("zerowidth")
 
    def validate_decays(self):
        """! Validate the various decay mode keywords."""
        # See https://docs.google.com/spreadsheets/d/1Aa7FwB74ppHbXles5LyHrKGlvUFi5PxbZC-Mrc3Lz90 for meanings
        self.expose()  # convenience call to simplify syntax
        self.check_decay_mode(self.decay_mode, self.allowed_decay_modes)
        # Enable appropriate decay mode
        list(self.parameters_by_keyword("WpWmevev"))[0].value = 0  # disable the one used as a proxy for decay mode
        __decay_mode_lookup = {"w+ w- > e+ ve e- ve~": "WpWmevev",
                               "w+ w- > mu+ vm mu- vm~": "WpWmmuvmuv",
                               "w+ w- > tau+ vt tau- vt~": "WpWmtauvtauv",
                               "w+ w- > e+ ve mu- vm~": "WpWmevmuv",
                               "w+ w- > mu+ vm e- ve~": "WpWmmuvev",
                               "w+ w- > e+ ve tau- vt~": "WpWmevtauv",
                               "w+ w- > tau+ vt e- ve~": "WpWmtauvev",
                               "w+ w- > mu+ vm tau- vt~": "WpWmuvtauv",
                               "w+ w- > tau+ vt mu- vm~": "WpWmtauvmuv",
                               "w+ w- > e+ ve mu- vm~ / mu+ vm e- ve~": "WWevmuv",
                               "w+ w- > e+ ve tau- vt~ / tau+ vt e- ve~": "WWevtauv",
                               "w+ w- > mu+ vm tau- vt~ / tau+ vt mu- vm~": "WWmuvtauv",
                               "w+ w- > l+ vl l'- vl'~": "WWlvlv",
                               "w+ w- > j j j j": "WWqqqq",
                               "w+ w- > l+ vl j j / j j l- vl~": "WWlvqq"}
        list(self.parameters_by_keyword(__decay_mode_lookup[self.decay_mode]))[0].value = 1