pyslha.py

Thu, 25 Apr 2013 11:43:16 +0200

author
Andy Buckley <andy@insectnation.org>
date
Thu, 25 Apr 2013 11:43:16 +0200
changeset 188
e706e3b2a647
parent 185
6cae67cd3cc1
child 189
60c73b489420
permissions
-rw-r--r--

Noted some suggested TODOs

andy@1 1 #! /usr/bin/env python
andy@1 2
andy@8 3 """\
andy@8 4 A simple but flexible parser of SUSY Les Houches Accord (SLHA) model and decay files.
andy@25 5
andy@52 6 pyslha is a parser/writer module for particle physics SUSY Les Houches Accord
andy@52 7 (SLHA) supersymmetric spectrum/decay files, and a collection of scripts which
andy@52 8 use the interface, e.g. for conversion to and from the legacy ISAWIG format, or
andy@52 9 to plot the mass spectrum and decay chains.
andy@52 10
andy@145 11 The current release supports SLHA version 1, and as far as we're aware is also
andy@145 12 fully compatible with SLHA2: the block structures are read and accessed
andy@145 13 completely generically. If you have any problems with SLHA2, please provide an
andy@145 14 example input file and we'll investigate.
andy@52 15
andy@131 16 The plotting script provides output in PDF, EPS and PNG via LaTeX and the TikZ
andy@131 17 graphics package, and as LaTeX/TikZ source for direct embedding into documents or
andy@131 18 user-tweaking of the generated output.
andy@64 19
andy@52 20 TODOs:
andy@188 21 * Opportunistically use ordereddict to preserve write order
andy@188 22 * Preserve comments from read -> write (needs full-line/inline comment separation?)
andy@148 23 * Split writeSLHA into writeSLHA{Blocks,Decays}
andy@64 24 * Identify HERWIG decay matrix element to use in ISAWIG
andy@52 25 * Handle RPV SUSY in ISAWIG
andy@8 26 """
andy@8 27
andy@8 28 __author__ = "Andy Buckley <andy.buckley@cern.ch"
andy@185 29 __version__ = "1.4.4"
andy@8 30
andy@1 31
andy@4 32 def _autotype(var):
andy@30 33 """Automatically convert strings to numerical types if possible."""
andy@30 34 if type(var) is not str:
andy@4 35 return var
andy@36 36 if var.isdigit() or (var.startswith("-") and var[1:].isdigit()):
andy@4 37 return int(var)
andy@4 38 try:
andy@4 39 f = float(var)
andy@4 40 return f
andy@4 41 except ValueError:
andy@4 42 return var
andy@4 43
andy@147 44 def _autostr(var, precision=8):
andy@30 45 """Automatically numerical types to the right sort of string."""
andy@30 46 if type(var) is float:
andy@147 47 return ("%." + str(precision) + "e") % var
andy@30 48 return str(var)
andy@30 49
andy@30 50
andy@166 51 class ParseError(Exception):
andy@166 52 "Exception object to be raised when a spectrum file/string is malformed"
andy@166 53 def __init__(self, errmsg):
andy@166 54 self.msg = errmsg
andy@168 55 def __str__(self):
andy@166 56 return self.msg
andy@166 57
andy@166 58
andy@4 59
andy@12 60 class Block(object):
andy@8 61 """
andy@8 62 Object representation of any BLOCK elements read from the SLHA file. Blocks
andy@8 63 have a name, may have an associated Q value, and then a collection of data
andy@8 64 entries, stored as a recursive dictionary. Types in the dictionary are
andy@8 65 numeric (int or float) when a cast from the string in the file has been
andy@8 66 possible.
andy@8 67 """
andy@5 68 def __init__(self, name, q=None):
andy@1 69 self.name = name
andy@188 70 self.entries = {} # TODO: Use ordereddict?
andy@5 71 self.q = _autotype(q)
andy@1 72
andy@1 73 def add_entry(self, entry):
andy@1 74 #print entry
andy@1 75 nextparent = self.entries
andy@1 76 if len(entry) < 2:
andy@1 77 raise Exception("Block entries must be at least a 2-tuple")
andy@4 78 #print "in", entry
andy@4 79 entry = map(_autotype, entry)
andy@4 80 #print "out", entry
andy@1 81 for e in entry[:-2]:
andy@1 82 if e is not entry[-1]:
andy@188 83 nextparent = nextparent.setdefault(e, {}) # TODO: Use ordereddict?
andy@1 84 nextparent[entry[-2]] = entry[-1]
andy@1 85 #print self.entries
andy@1 86
andy@1 87 def __cmp__(self, other):
andy@31 88 return cmp(self.name, other.name)
andy@1 89
andy@1 90 def __str__(self):
andy@1 91 s = self.name
andy@5 92 if self.q is not None:
andy@5 93 s += " (Q=%s)" % self.q
andy@1 94 s += "\n"
andy@1 95 s += str(self.entries)
andy@1 96 return s
andy@1 97
andy@123 98 def __repr__(self):
andy@123 99 return self.__str__()
andy@123 100
andy@1 101
andy@12 102 class Decay(object):
andy@8 103 """
andy@8 104 Object representing a decay entry on a particle decribed by the SLHA file.
andy@8 105 'Decay' objects are not a direct representation of a DECAY block in an SLHA
andy@8 106 file... that role, somewhat confusingly, is taken by the Particle class.
andy@8 107
andy@8 108 Decay objects have three properties: a branching ratio, br, an nda number
andy@12 109 (number of daughters == len(ids)), and a tuple of PDG PIDs to which the
andy@12 110 decay occurs. The PDG ID of the particle whose decay this represents may
andy@12 111 also be stored, but this is normally known via the Particle in which the
andy@12 112 decay is stored.
andy@8 113 """
andy@8 114 def __init__(self, br, nda, ids, parentid=None):
andy@8 115 self.parentid = parentid
andy@6 116 self.br = br
andy@6 117 self.nda = nda
andy@6 118 self.ids = ids
andy@29 119 assert(self.nda == len(self.ids))
andy@6 120
andy@6 121 def __cmp__(self, other):
andy@31 122 return cmp(other.br, self.br)
andy@6 123
andy@6 124 def __str__(self):
andy@147 125 return "%.8e %s" % (self.br, self.ids)
andy@6 126
andy@123 127 def __repr__(self):
andy@123 128 return self.__str__()
andy@123 129
andy@6 130
andy@12 131 class Particle(object):
andy@8 132 """
andy@8 133 Representation of a single, specific particle, decay block from an SLHA
andy@8 134 file. These objects are not themselves called 'Decay', since that concept
andy@8 135 applies more naturally to the various decays found inside this
andy@8 136 object. Particle classes store the PDG ID (pid) of the particle being
andy@8 137 represented, and optionally the mass (mass) and total decay width
andy@8 138 (totalwidth) of that particle in the SLHA scenario. Masses may also be found
andy@8 139 via the MASS block, from which the Particle.mass property is filled, if at
andy@8 140 all. They also store a list of Decay objects (decays) which are probably the
andy@8 141 item of most interest.
andy@8 142 """
andy@6 143 def __init__(self, pid, totalwidth=None, mass=None):
andy@6 144 self.pid = pid
andy@6 145 self.totalwidth = totalwidth
andy@6 146 self.mass = mass
andy@6 147 self.decays = []
andy@6 148
andy@6 149 def add_decay(self, br, nda, ids):
andy@6 150 self.decays.append(Decay(br, nda, ids))
andy@6 151 self.decays.sort()
andy@6 152
andy@6 153 def __cmp__(self, other):
andy@6 154 if abs(self.pid) == abs(other.pid):
andy@31 155 return cmp(self.pid, other.pid)
andy@31 156 return cmp(abs(self.pid), abs(other.pid))
andy@6 157
andy@6 158 def __str__(self):
andy@6 159 s = str(self.pid)
andy@7 160 if self.mass is not None:
andy@147 161 s += " : mass = %.8e GeV" % self.mass
andy@6 162 if self.totalwidth is not None:
andy@147 163 s += " : total width = %.8e GeV" % self.totalwidth
andy@6 164 for d in self.decays:
andy@12 165 if d.br > 0.0:
andy@12 166 s += "\n %s" % d
andy@6 167 return s
andy@1 168
andy@123 169 def __repr__(self):
andy@123 170 return self.__str__()
andy@123 171
andy@123 172
andy@1 173
andy@21 174
andy@21 175
andy@31 176 def readSLHA(spcstr, ignorenobr=False):
andy@21 177 """
andy@31 178 Read an SLHA definition from a string, returning dictionaries of blocks and
andy@31 179 decays.
andy@31 180
andy@31 181 If the ignorenobr parameter is True, do not store decay entries with a
andy@31 182 branching ratio of zero.
andy@21 183 """
andy@188 184 blocks = {} # TODO: Use ordereddict?
andy@188 185 decays = {} # TODO: Use ordereddict?
andy@21 186 #
andy@34 187 import re
andy@21 188 currentblock = None
andy@21 189 currentdecay = None
andy@21 190 for line in spcstr.splitlines():
andy@21 191 ## Handle (ignore) comment lines
andy@21 192 if line.startswith("#"):
andy@21 193 continue
andy@21 194 if "#" in line:
andy@21 195 line = line[:line.index("#")]
andy@21 196
andy@21 197 ## Handle BLOCK/DECAY start lines
andy@21 198 if line.upper().startswith("BLOCK"):
andy@47 199 #print line
andy@141 200 match = re.match(r"BLOCK\s+(\w+)(\s+Q\s*=\s*.+)?", line.upper())
andy@21 201 if not match:
andy@8 202 continue
andy@21 203 blockname = match.group(1)
andy@21 204 qstr = match.group(2)
andy@21 205 if qstr is not None:
andy@141 206 qstr = qstr[qstr.find("=")+1:].strip()
andy@21 207 currentblock = blockname
andy@21 208 currentdecay = None
andy@21 209 blocks[blockname] = Block(blockname, q=qstr)
andy@21 210 elif line.upper().startswith("DECAY"):
andy@185 211 match = re.match(r"DECAY\s+(-?\d+)\s+([\d\.E+-]+|NAN).*", line.upper())
andy@21 212 if not match:
andy@21 213 continue
andy@21 214 pdgid = int(match.group(1))
andy@185 215 width = float(match.group(2)) if match.group(2) != "NAN" else None
andy@21 216 currentblock = "DECAY"
andy@21 217 currentdecay = pdgid
andy@21 218 decays[pdgid] = Particle(pdgid, width)
andy@21 219 else:
andy@21 220 ## In-block line
andy@21 221 if currentblock is not None:
andy@21 222 items = line.split()
andy@21 223 if len(items) < 1:
andy@6 224 continue
andy@21 225 if currentblock != "DECAY":
andy@21 226 if len(items) < 2:
andy@21 227 ## Treat the ALPHA block differently
andy@21 228 blocks[currentblock].value = _autotype(items[0])
andy@33 229 blocks[currentblock].entries = _autotype(items[0])
andy@8 230 else:
andy@21 231 blocks[currentblock].add_entry(items)
andy@21 232 else:
andy@185 233 br = float(items[0]) if items[0].upper() != "NAN" else None
andy@21 234 nda = int(items[1])
andy@21 235 ids = map(int, items[2:])
andy@185 236 if br > 0.0 or not ignorenobr: # br == None is < 0
andy@31 237 decays[currentdecay].add_decay(br, nda, ids)
andy@1 238
andy@8 239 ## Try to populate Particle masses from the MASS block
andy@47 240 # print blocks.keys()
andy@47 241 try:
andy@47 242 for pid in blocks["MASS"].entries.keys():
andy@47 243 if decays.has_key(pid):
andy@47 244 decays[pid].mass = blocks["MASS"].entries[pid]
andy@47 245 except:
andy@166 246 raise ParseError("No MASS block found: cannot populate particle masses")
andy@8 247
andy@1 248 return blocks, decays
andy@1 249
andy@1 250
andy@124 251
andy@124 252
andy@124 253 # TODO: Split writeSLHA into writeSLHA{Blocks,Decays}
andy@124 254
andy@124 255
andy@147 256 def writeSLHA(blocks, decays, ignorenobr=False, precision=8):
andy@124 257 """
andy@124 258 Return an SLHA definition as a string, from the supplied blocks and decays dicts.
andy@124 259 """
andy@147 260 fmte = "%." + str(precision) + "e"
andy@147 261
andy@124 262 sep = " "
andy@124 263 out = ""
andy@124 264 def dict_hier_strs(d, s=""):
andy@188 265 if type(d) is dict: # TODO: Use ordereddict?
andy@124 266 for k, v in sorted(d.iteritems()):
andy@124 267 for s2 in dict_hier_strs(v, s + sep + _autostr(k)):
andy@124 268 yield s2
andy@124 269 else:
andy@124 270 yield s + sep + _autostr(d)
andy@124 271 ## Blocks
andy@124 272 for bname, b in sorted(blocks.iteritems()):
andy@124 273 namestr = b.name
andy@124 274 if b.q is not None:
andy@147 275 namestr += (" Q= " + fmte) % float(b.q)
andy@124 276 out += "BLOCK %s\n" % namestr
andy@124 277 for s in dict_hier_strs(b.entries):
andy@124 278 out += sep + s + "\n"
andy@124 279 out += "\n"
andy@124 280 ## Decays
andy@124 281 for pid, particle in sorted(decays.iteritems()):
andy@147 282 out += ("DECAY %d " + fmte + "\n") % (particle.pid, particle.totalwidth or -1)
andy@124 283 for d in sorted(particle.decays):
andy@124 284 if d.br > 0.0 or not ignorenobr:
andy@124 285 products_str = " ".join(map(str, d.ids))
andy@147 286 out += sep + fmte % d.br + sep + "%d" % len(d.ids) + sep + products_str + "\n"
andy@124 287 out += "\n"
andy@124 288 return out
andy@124 289
andy@124 290
andy@124 291
andy@124 292 ###############################################################################
andy@161 293 ## PDG <-> HERWIG particle ID code translations for ISAWIG handling
andy@124 294
andy@124 295 ## Static array of HERWIG IDHW codes mapped to PDG MC ID codes, based on
andy@124 296 ## http://www.hep.phy.cam.ac.uk/~richardn/HERWIG/ISAWIG/susycodes.html
andy@124 297 ## + the IDPDG array and section 4.13 of the HERWIG manual.
andy@124 298 _HERWIGID2PDGID = {}
andy@124 299 _HERWIGID2PDGID[7] = -1
andy@124 300 _HERWIGID2PDGID[8] = -2
andy@124 301 _HERWIGID2PDGID[9] = -3
andy@124 302 _HERWIGID2PDGID[10] = -4
andy@124 303 _HERWIGID2PDGID[11] = -5
andy@124 304 _HERWIGID2PDGID[12] = -6
andy@124 305 _HERWIGID2PDGID[13] = 21
andy@124 306 _HERWIGID2PDGID[59] = 22
andy@124 307 _HERWIGID2PDGID[121] = 11
andy@124 308 _HERWIGID2PDGID[122] = 12
andy@124 309 _HERWIGID2PDGID[123] = 13
andy@124 310 _HERWIGID2PDGID[124] = 14
andy@124 311 _HERWIGID2PDGID[125] = 15
andy@124 312 _HERWIGID2PDGID[126] = 16
andy@124 313 _HERWIGID2PDGID[127] = -11
andy@124 314 _HERWIGID2PDGID[128] = -12
andy@124 315 _HERWIGID2PDGID[129] = -13
andy@124 316 _HERWIGID2PDGID[130] = -14
andy@124 317 _HERWIGID2PDGID[131] = -15
andy@124 318 _HERWIGID2PDGID[132] = -16
andy@139 319 _HERWIGID2PDGID[198] = 24 # W+
andy@139 320 _HERWIGID2PDGID[199] = -24 # W-
andy@139 321 _HERWIGID2PDGID[200] = 23 # Z0
andy@139 322 _HERWIGID2PDGID[201] = 25 ## SM HIGGS
andy@124 323 _HERWIGID2PDGID[203] = 25 ## HIGGSL0 (== PDG standard in this direction)
andy@124 324 _HERWIGID2PDGID[204] = 35 ## HIGGSH0
andy@124 325 _HERWIGID2PDGID[205] = 36 ## HIGGSA0
andy@124 326 _HERWIGID2PDGID[206] = 37 ## HIGGS+
andy@124 327 _HERWIGID2PDGID[207] = -37 ## HIGGS-
andy@124 328 _HERWIGID2PDGID[401] = 1000001 ## SSDLBR
andy@124 329 _HERWIGID2PDGID[407] = -1000001 ## SSDLBR
andy@124 330 _HERWIGID2PDGID[402] = 1000002 ## SSULBR
andy@124 331 _HERWIGID2PDGID[408] = -1000002 ## SSUL
andy@124 332 _HERWIGID2PDGID[403] = 1000003 ## SSSLBR
andy@124 333 _HERWIGID2PDGID[409] = -1000003 ## SSSL
andy@124 334 _HERWIGID2PDGID[404] = 1000004 ## SSCLBR
andy@124 335 _HERWIGID2PDGID[410] = -1000004 ## SSCL
andy@124 336 _HERWIGID2PDGID[405] = 1000005 ## SSB1BR
andy@124 337 _HERWIGID2PDGID[411] = -1000005 ## SSB1
andy@124 338 _HERWIGID2PDGID[406] = 1000006 ## SST1BR
andy@124 339 _HERWIGID2PDGID[412] = -1000006 ## SST1
andy@124 340 _HERWIGID2PDGID[413] = 2000001 ## SSDR
andy@124 341 _HERWIGID2PDGID[419] = -2000001 ## SSDRBR
andy@124 342 _HERWIGID2PDGID[414] = 2000002 ## SSUR
andy@124 343 _HERWIGID2PDGID[420] = -2000002 ## SSURBR
andy@124 344 _HERWIGID2PDGID[415] = 2000003 ## SSSR
andy@124 345 _HERWIGID2PDGID[421] = -2000003 ## SSSRBR
andy@124 346 _HERWIGID2PDGID[416] = 2000004 ## SSCR
andy@124 347 _HERWIGID2PDGID[422] = -2000004 ## SSCRBR
andy@124 348 _HERWIGID2PDGID[417] = 2000005 ## SSB2
andy@124 349 _HERWIGID2PDGID[423] = -2000005 ## SSB2BR
andy@124 350 _HERWIGID2PDGID[418] = 2000006 ## SST2
andy@124 351 _HERWIGID2PDGID[424] = -2000006 ## SST2BR
andy@124 352 _HERWIGID2PDGID[425] = 1000011 ## SSEL-
andy@124 353 _HERWIGID2PDGID[431] = -1000011 ## SSEL+
andy@124 354 _HERWIGID2PDGID[426] = 1000012 ## SSNUEL
andy@124 355 _HERWIGID2PDGID[432] = -1000012 ## SSNUELBR
andy@124 356 _HERWIGID2PDGID[427] = 1000013 ## SSMUL-
andy@124 357 _HERWIGID2PDGID[433] = -1000013 ## SSMUL+
andy@124 358 _HERWIGID2PDGID[428] = 1000014 ## SSNUMUL
andy@124 359 _HERWIGID2PDGID[434] = -1000014 ## SSNUMLBR
andy@124 360 _HERWIGID2PDGID[429] = 1000015 ## SSTAU1-
andy@124 361 _HERWIGID2PDGID[435] = -1000015 ## SSTAU1+
andy@124 362 _HERWIGID2PDGID[430] = 1000016 ## SSNUTL
andy@124 363 _HERWIGID2PDGID[436] = -1000016 ## SSNUTLBR
andy@124 364 _HERWIGID2PDGID[437] = 2000011 ## SSEL-
andy@124 365 _HERWIGID2PDGID[443] = -2000011 ## SSEL+
andy@124 366 _HERWIGID2PDGID[438] = 2000012 ## SSNUEL
andy@124 367 _HERWIGID2PDGID[444] = -2000012 ## SSNUELBR
andy@124 368 _HERWIGID2PDGID[439] = 2000013 ## SSMUL-
andy@124 369 _HERWIGID2PDGID[445] = -2000013 ## SSMUL+
andy@124 370 _HERWIGID2PDGID[440] = 2000014 ## SSNUMUL
andy@124 371 _HERWIGID2PDGID[446] = -2000014 ## SSNUMLBR
andy@124 372 _HERWIGID2PDGID[441] = 2000015 ## SSTAU1-
andy@124 373 _HERWIGID2PDGID[447] = -2000015 ## SSTAU1+
andy@124 374 _HERWIGID2PDGID[442] = 2000016 ## SSNUTL
andy@124 375 _HERWIGID2PDGID[448] = -2000016 ## SSNUTLBR
andy@124 376 _HERWIGID2PDGID[449] = 1000021 ## GLUINO
andy@124 377 _HERWIGID2PDGID[450] = 1000022 ## NTLINO1
andy@124 378 _HERWIGID2PDGID[451] = 1000023 ## NTLINO2
andy@124 379 _HERWIGID2PDGID[452] = 1000025 ## NTLINO3
andy@124 380 _HERWIGID2PDGID[453] = 1000035 ## NTLINO4
andy@124 381 _HERWIGID2PDGID[454] = 1000024 ## CHGINO1+
andy@124 382 _HERWIGID2PDGID[456] = -1000024 ## CHGINO1-
andy@124 383 _HERWIGID2PDGID[455] = 1000037 ## CHGINO2+
andy@124 384 _HERWIGID2PDGID[457] = -1000037 ## CHGINO2-
andy@124 385 _HERWIGID2PDGID[458] = 1000039 ## GRAVTINO
andy@124 386
andy@124 387 def herwigid2pdgid(hwid):
andy@124 388 """
andy@124 389 Convert a particle ID code in the HERWIG internal IDHW format (as used by
andy@124 390 ISAWIG) into its equivalent in the standard PDG ID code definition.
andy@124 391 """
andy@124 392 return _HERWIGID2PDGID.get(hwid, hwid)
andy@124 393
andy@120 394
andy@124 395 ## PDG MC ID codes mapped to HERWIG IDHW codes, based on
andy@124 396 ## http://www.hep.phy.cam.ac.uk/~richardn/HERWIG/ISAWIG/susycodes.html
andy@124 397 ## + the IDPDG array and section 4.13 of the HERWIG manual.
andy@124 398 _PDGID2HERWIGID = {}
andy@124 399 _PDGID2HERWIGID[ -1] = 7
andy@124 400 _PDGID2HERWIGID[ -2] = 8
andy@124 401 _PDGID2HERWIGID[ -3] = 9
andy@124 402 _PDGID2HERWIGID[ -4] = 10
andy@124 403 _PDGID2HERWIGID[ -5] = 11
andy@124 404 _PDGID2HERWIGID[ -6] = 12
andy@124 405 _PDGID2HERWIGID[ 21] = 13
andy@124 406 _PDGID2HERWIGID[ 22] = 59
andy@124 407 _PDGID2HERWIGID[ 11] = 121
andy@124 408 _PDGID2HERWIGID[ 12] = 122
andy@124 409 _PDGID2HERWIGID[ 13] = 123
andy@124 410 _PDGID2HERWIGID[ 14] = 124
andy@124 411 _PDGID2HERWIGID[ 15] = 125
andy@124 412 _PDGID2HERWIGID[ 16] = 126
andy@124 413 _PDGID2HERWIGID[ -11] = 127
andy@124 414 _PDGID2HERWIGID[ -12] = 128
andy@124 415 _PDGID2HERWIGID[ -13] = 129
andy@124 416 _PDGID2HERWIGID[ -14] = 130
andy@124 417 _PDGID2HERWIGID[ -15] = 131
andy@124 418 _PDGID2HERWIGID[ -16] = 132
andy@139 419 _PDGID2HERWIGID[ 24] = 198 ## W+
andy@139 420 _PDGID2HERWIGID[ -24] = 199 ## W-
andy@139 421 _PDGID2HERWIGID[ 23] = 200 ## Z
andy@139 422 _PDGID2HERWIGID[ 25] = 203 ## HIGGSL0 (added for PDG standard -> HERWIG IDHW) # TODO: should be 201?
andy@124 423 _PDGID2HERWIGID[ 26] = 203 ## HIGGSL0
andy@124 424 _PDGID2HERWIGID[ 35] = 204 ## HIGGSH0
andy@124 425 _PDGID2HERWIGID[ 36] = 205 ## HIGGSA0
andy@124 426 _PDGID2HERWIGID[ 37] = 206 ## HIGGS+
andy@124 427 _PDGID2HERWIGID[ -37] = 207 ## HIGGS-
andy@124 428 _PDGID2HERWIGID[ 1000001] = 401 ## SSDLBR
andy@124 429 _PDGID2HERWIGID[-1000001] = 407 ## SSDLBR
andy@124 430 _PDGID2HERWIGID[ 1000002] = 402 ## SSULBR
andy@124 431 _PDGID2HERWIGID[-1000002] = 408 ## SSUL
andy@124 432 _PDGID2HERWIGID[ 1000003] = 403 ## SSSLBR
andy@124 433 _PDGID2HERWIGID[-1000003] = 409 ## SSSL
andy@124 434 _PDGID2HERWIGID[ 1000004] = 404 ## SSCLBR
andy@124 435 _PDGID2HERWIGID[-1000004] = 410 ## SSCL
andy@124 436 _PDGID2HERWIGID[ 1000005] = 405 ## SSB1BR
andy@124 437 _PDGID2HERWIGID[-1000005] = 411 ## SSB1
andy@124 438 _PDGID2HERWIGID[ 1000006] = 406 ## SST1BR
andy@124 439 _PDGID2HERWIGID[-1000006] = 412 ## SST1
andy@124 440 _PDGID2HERWIGID[ 2000001] = 413 ## SSDR
andy@124 441 _PDGID2HERWIGID[-2000001] = 419 ## SSDRBR
andy@124 442 _PDGID2HERWIGID[ 2000002] = 414 ## SSUR
andy@124 443 _PDGID2HERWIGID[-2000002] = 420 ## SSURBR
andy@124 444 _PDGID2HERWIGID[ 2000003] = 415 ## SSSR
andy@124 445 _PDGID2HERWIGID[-2000003] = 421 ## SSSRBR
andy@124 446 _PDGID2HERWIGID[ 2000004] = 416 ## SSCR
andy@124 447 _PDGID2HERWIGID[-2000004] = 422 ## SSCRBR
andy@124 448 _PDGID2HERWIGID[ 2000005] = 417 ## SSB2
andy@124 449 _PDGID2HERWIGID[-2000005] = 423 ## SSB2BR
andy@124 450 _PDGID2HERWIGID[ 2000006] = 418 ## SST2
andy@124 451 _PDGID2HERWIGID[-2000006] = 424 ## SST2BR
andy@124 452 _PDGID2HERWIGID[ 1000011] = 425 ## SSEL-
andy@124 453 _PDGID2HERWIGID[-1000011] = 431 ## SSEL+
andy@124 454 _PDGID2HERWIGID[ 1000012] = 426 ## SSNUEL
andy@124 455 _PDGID2HERWIGID[-1000012] = 432 ## SSNUELBR
andy@124 456 _PDGID2HERWIGID[ 1000013] = 427 ## SSMUL-
andy@124 457 _PDGID2HERWIGID[-1000013] = 433 ## SSMUL+
andy@124 458 _PDGID2HERWIGID[ 1000014] = 428 ## SSNUMUL
andy@124 459 _PDGID2HERWIGID[-1000014] = 434 ## SSNUMLBR
andy@124 460 _PDGID2HERWIGID[ 1000015] = 429 ## SSTAU1-
andy@124 461 _PDGID2HERWIGID[-1000015] = 435 ## SSTAU1+
andy@124 462 _PDGID2HERWIGID[ 1000016] = 430 ## SSNUTL
andy@124 463 _PDGID2HERWIGID[-1000016] = 436 ## SSNUTLBR
andy@124 464 _PDGID2HERWIGID[ 2000011] = 437 ## SSEL-
andy@124 465 _PDGID2HERWIGID[-2000011] = 443 ## SSEL+
andy@124 466 _PDGID2HERWIGID[ 2000012] = 438 ## SSNUEL
andy@124 467 _PDGID2HERWIGID[-2000012] = 444 ## SSNUELBR
andy@124 468 _PDGID2HERWIGID[ 2000013] = 439 ## SSMUL-
andy@124 469 _PDGID2HERWIGID[-2000013] = 445 ## SSMUL+
andy@124 470 _PDGID2HERWIGID[ 2000014] = 440 ## SSNUMUL
andy@124 471 _PDGID2HERWIGID[-2000014] = 446 ## SSNUMLBR
andy@124 472 _PDGID2HERWIGID[ 2000015] = 441 ## SSTAU1-
andy@124 473 _PDGID2HERWIGID[-2000015] = 447 ## SSTAU1+
andy@124 474 _PDGID2HERWIGID[ 2000016] = 442 ## SSNUTL
andy@124 475 _PDGID2HERWIGID[-2000016] = 448 ## SSNUTLBR
andy@124 476 _PDGID2HERWIGID[ 1000021] = 449 ## GLUINO
andy@124 477 _PDGID2HERWIGID[ 1000022] = 450 ## NTLINO1
andy@124 478 _PDGID2HERWIGID[ 1000023] = 451 ## NTLINO2
andy@124 479 _PDGID2HERWIGID[ 1000025] = 452 ## NTLINO3
andy@124 480 _PDGID2HERWIGID[ 1000035] = 453 ## NTLINO4
andy@124 481 _PDGID2HERWIGID[ 1000024] = 454 ## CHGINO1+
andy@124 482 _PDGID2HERWIGID[-1000024] = 456 ## CHGINO1-
andy@124 483 _PDGID2HERWIGID[ 1000037] = 455 ## CHGINO2+
andy@124 484 _PDGID2HERWIGID[-1000037] = 457 ## CHGINO2-
andy@124 485 _PDGID2HERWIGID[ 1000039] = 458 ## GRAVTINO
andy@124 486
andy@124 487 def pdgid2herwigid(pdgid):
andy@29 488 """
andy@124 489 Convert a particle ID code in the standard PDG ID code definition into
andy@124 490 its equivalent in the HERWIG internal IDHW format (as used by ISAWIG).
andy@124 491 """
andy@124 492 return _PDGID2HERWIGID.get(pdgid, pdgid)
andy@31 493
andy@29 494
andy@161 495 ###############################################################################
andy@161 496 ## ISAWIG format reading/writing
andy@29 497
andy@29 498
andy@161 499 def readISAWIG(isastr, ignorenobr=False):
andy@48 500 """
andy@161 501 Read a spectrum definition from a string in the ISAWIG format, returning
andy@161 502 dictionaries of blocks and decays. While this is not an SLHA format, it is
andy@161 503 informally supported as a useful mechanism for converting ISAWIG spectra to
andy@161 504 SLHA.
andy@48 505
andy@161 506 ISAWIG parsing based on the HERWIG SUSY specification format, from
andy@161 507 http://www.hep.phy.cam.ac.uk/~richardn/HERWIG/ISAWIG/file.html
andy@48 508
andy@161 509 If the ignorenobr parameter is True, do not store decay entries with a
andy@161 510 branching ratio of zero.
andy@48 511 """
andy@161 512
andy@188 513 blocks = {} # TODO: Use ordereddict?
andy@188 514 decays = {} # TODO: Use ordereddict?
andy@161 515 LINES = isastr.splitlines()
andy@161 516
andy@161 517 def getnextvalidline():
andy@161 518 while LINES:
andy@161 519 s = LINES.pop(0).strip()
andy@161 520 ## Return None if EOF reached
andy@161 521 if len(s) == 0:
andy@161 522 continue
andy@161 523 ## Strip comments
andy@161 524 if "#" in s:
andy@161 525 s = s[:s.index("#")].strip()
andy@161 526 ## Return if non-empty
andy@161 527 if len(s) > 0:
andy@161 528 return s
andy@161 529
andy@161 530 def getnextvalidlineitems():
andy@161 531 return map(_autotype, getnextvalidline().split())
andy@161 532
andy@161 533 ## Populate MASS block and create decaying particle objects
andy@161 534 masses = Block("MASS")
andy@161 535 numentries = int(getnextvalidline())
andy@161 536 for i in xrange(numentries):
andy@161 537 hwid, mass, lifetime = getnextvalidlineitems()
andy@161 538 width = 1.0/(lifetime * 1.51926778e24) ## width in GeV == hbar/lifetime in seconds
andy@161 539 pdgid = herwigid2pdgid(hwid)
andy@161 540 masses.add_entry((pdgid, mass))
andy@161 541 decays[pdgid] = Particle(pdgid, width, mass)
andy@161 542 #print pdgid, mass, width
andy@161 543 blocks["MASS"] = masses
andy@161 544
andy@161 545 ## Populate decays
andy@161 546 for n in xrange(numentries):
andy@161 547 numdecays = int(getnextvalidline())
andy@161 548 for d in xrange(numdecays):
andy@161 549 #print n, numentries-1, d, numdecays-1
andy@161 550 decayitems = getnextvalidlineitems()
andy@161 551 hwid = decayitems[0]
andy@161 552 pdgid = herwigid2pdgid(hwid)
andy@161 553 br = decayitems[1]
andy@161 554 nme = decayitems[2]
andy@161 555 daughter_hwids = decayitems[3:]
andy@161 556 daughter_pdgids = []
andy@161 557 for hw in daughter_hwids:
andy@161 558 if hw != 0:
andy@161 559 daughter_pdgids.append(herwigid2pdgid(hw))
andy@161 560 if not decays.has_key(pdgid):
andy@161 561 #print "Decay for unlisted particle %d, %d" % (hwid, pdgid)
andy@161 562 decays[pdgid] = Particle(pdgid)
andy@161 563 decays[pdgid].add_decay(br, len(daughter_pdgids), daughter_pdgids)
andy@161 564
andy@161 565
andy@161 566 ## Now the SUSY parameters
andy@161 567 TANB, ALPHAH = getnextvalidlineitems()
andy@161 568 blocks["MINPAR"] = Block("MINPAR")
andy@161 569 blocks["MINPAR"].add_entry((3, TANB))
andy@161 570 blocks["ALPHA"] = Block("ALPHA")
andy@161 571 blocks["ALPHA"].entries = ALPHAH
andy@161 572 #
andy@161 573 ## Neutralino mixing matrix
andy@161 574 blocks["NMIX"] = Block("NMIX")
andy@161 575 for i in xrange(1, 5):
andy@161 576 nmix_i = getnextvalidlineitems()
andy@161 577 for j, v in enumerate(nmix_i):
andy@161 578 blocks["NMIX"].add_entry((i, j+1, v))
andy@161 579 #
andy@161 580 ## Chargino mixing matrices V and U
andy@161 581 blocks["VMIX"] = Block("VMIX")
andy@161 582 vmix = getnextvalidlineitems()
andy@161 583 blocks["VMIX"].add_entry((1, 1, vmix[0]))
andy@161 584 blocks["VMIX"].add_entry((1, 2, vmix[1]))
andy@161 585 blocks["VMIX"].add_entry((2, 1, vmix[2]))
andy@161 586 blocks["VMIX"].add_entry((2, 2, vmix[3]))
andy@161 587 blocks["UMIX"] = Block("UMIX")
andy@161 588 umix = getnextvalidlineitems()
andy@161 589 blocks["UMIX"].add_entry((1, 1, umix[0]))
andy@161 590 blocks["UMIX"].add_entry((1, 2, umix[1]))
andy@161 591 blocks["UMIX"].add_entry((2, 1, umix[2]))
andy@161 592 blocks["UMIX"].add_entry((2, 2, umix[3]))
andy@161 593 #
andy@161 594 THETAT, THETAB, THETAL = getnextvalidlineitems()
andy@161 595 import math
andy@161 596 blocks["STOPMIX"] = Block("STOPMIX")
andy@161 597 blocks["STOPMIX"].add_entry((1, 1, math.cos(THETAT)))
andy@161 598 blocks["STOPMIX"].add_entry((1, 2, -math.sin(THETAT)))
andy@161 599 blocks["STOPMIX"].add_entry((2, 1, math.sin(THETAT)))
andy@161 600 blocks["STOPMIX"].add_entry((2, 2, math.cos(THETAT)))
andy@161 601 blocks["SBOTMIX"] = Block("SBOTMIX")
andy@161 602 blocks["SBOTMIX"].add_entry((1, 1, math.cos(THETAB)))
andy@161 603 blocks["SBOTMIX"].add_entry((1, 2, -math.sin(THETAB)))
andy@161 604 blocks["SBOTMIX"].add_entry((2, 1, math.sin(THETAB)))
andy@161 605 blocks["SBOTMIX"].add_entry((2, 2, math.cos(THETAB)))
andy@161 606 blocks["STAUMIX"] = Block("STAUMIX")
andy@161 607 blocks["STAUMIX"].add_entry((1, 1, math.cos(THETAL)))
andy@161 608 blocks["STAUMIX"].add_entry((1, 2, -math.sin(THETAL)))
andy@161 609 blocks["STAUMIX"].add_entry((2, 1, math.sin(THETAL)))
andy@161 610 blocks["STAUMIX"].add_entry((2, 2, math.cos(THETAL)))
andy@161 611 #
andy@161 612 ATSS, ABSS, ALSS = getnextvalidlineitems()
andy@161 613 blocks["AU"] = Block("AU")
andy@161 614 blocks["AU"].add_entry((3, 3, ATSS))
andy@161 615 blocks["AD"] = Block("AD")
andy@161 616 blocks["AD"].add_entry((3, 3, ABSS))
andy@161 617 blocks["AE"] = Block("AE")
andy@161 618 blocks["AE"].add_entry((3, 3, ALSS))
andy@161 619 #
andy@161 620 MUSS = getnextvalidlineitems()[0]
andy@161 621 blocks["MINPAR"].add_entry((4, MUSS))
andy@161 622 #
andy@161 623
andy@161 624 # TODO: Parse RPV boolean and couplings into SLHA2 blocks
andy@161 625
andy@161 626 return blocks, decays
andy@161 627
andy@161 628
andy@161 629 def writeISAJET(blocks, decays, outname, ignorenobr=False, precision=8):
andy@161 630 """
andy@161 631 Return a SUSY spectrum definition in the format required for input by ISAJET,
andy@161 632 as a string, from the supplied blocks and decays dicts.
andy@161 633
andy@161 634 The outname parameter specifies the desired output filename from ISAJET: this
andy@161 635 will appear in the first line of the return value.
andy@161 636
andy@161 637 If the ignorenobr parameter is True, do not write decay entries with a
andy@161 638 branching ratio of zero.
andy@161 639 """
andy@161 640 fmte = "%." + str(precision) + "e"
andy@161 641
andy@161 642 masses = blocks["MASS"].entries
andy@161 643
andy@161 644 ## Init output string
andy@161 645 out = ""
andy@161 646
andy@161 647 ## First line is the output name
andy@161 648 out += "'%s'" % outname + "\n"
andy@161 649
andy@161 650 ## Next the top mass
andy@161 651 out += fmte % masses[6] + "\n"
andy@161 652
andy@161 653 ## Next the top mass
andy@161 654 out += fmte % masses[6] + "\n"
andy@161 655
andy@161 656 ## mSUGRA parameters (one line)
andy@161 657 # e.g. 1273.78,713.286,804.721,4.82337
andy@161 658
andy@161 659 ## Masses and trilinear couplings (3 lines)
andy@161 660 # e.g. 1163.14,1114.15,1118.99,374.664,209.593
andy@161 661 # e.g. 1069.54,1112.7,919.908,374.556,209.381,-972.817,-326.745,-406.494
andy@161 662 # e.g. 1163.14,1114.15,1118.99,374.712,210.328
andy@161 663
andy@161 664 ## RPV couplings (?? lines)
andy@161 665 # e.g. 232.615,445.477
andy@161 666
andy@161 667 ## Etc ???!!!
andy@161 668 # e.g. /
andy@161 669 # e.g. n
andy@161 670 # e.g. y
andy@161 671 # e.g. y
andy@161 672 # e.g. 0.047441 3.80202e-23 0 0 0 2.17356e-22 0 0 5.23773e-09
andy@161 673 # e.g. y
andy@161 674 # e.g. 3.35297e-25 0 0 0 7.34125e-24 0 0 0 3.17951e-22 8.07984e-12 0 0 0 1.76906e-10 0 0 0 7.66184e-09 0 0 0 0 0 0 0 0 0
andy@161 675 # e.g. n
andy@161 676 # e.g. 'susy_RPV_stau_BC1scan_m560_tanb05.txt'
andy@161 677
andy@161 678 return out
andy@48 679
andy@48 680
andy@147 681 def writeISAWIG(blocks, decays, ignorenobr=False, precision=8):
andy@48 682 """
andy@161 683 Return a SUSY spectrum definition in the format produced by ISAWIG for inut to HERWIG
andy@161 684 as a string, from the supplied SLHA blocks and decays dicts.
andy@48 685
andy@48 686 ISAWIG parsing based on the HERWIG SUSY specification format, from
andy@48 687 http://www.hep.phy.cam.ac.uk/~richardn/HERWIG/ISAWIG/file.html
andy@48 688
andy@48 689 If the ignorenobr parameter is True, do not write decay entries with a
andy@48 690 branching ratio of zero.
andy@48 691 """
andy@147 692 fmte = "%." + str(precision) + "e"
andy@48 693
andy@48 694 masses = blocks["MASS"].entries
andy@48 695
andy@48 696 ## Init output string
andy@48 697 out = ""
andy@48 698
andy@48 699 ## First write out masses section:
andy@48 700 ## Number of SUSY + top particles
andy@48 701 ## IDHW, RMASS(IDHW), RLTIM(IDHW)
andy@48 702 ## repeated for each particle
andy@48 703 ## IDHW is the HERWIG identity code.
andy@48 704 ## RMASS and RTLIM are the mass in GeV, and lifetime in seconds respectively.
andy@48 705 massout = ""
andy@48 706 for pid in masses.keys():
andy@48 707 lifetime = -1
andy@48 708 try:
andy@48 709 width = decays[pid].totalwidth
andy@48 710 if width and width > 0:
andy@48 711 lifetime = 1.0/(width * 1.51926778e24) ## lifetime in seconds == hbar/width in GeV
andy@48 712 except:
andy@48 713 pass
andy@147 714 massout += ("%d " + fmte + " " + fmte + "\n") % (pdgid2herwigid(pid), masses[pid], lifetime)
andy@48 715 out += "%d\n" % massout.count("\n")
andy@48 716 out += massout
andy@48 717
andy@48 718 assert(len(masses) == len(decays))
andy@48 719
andy@48 720 ## Next each particles decay modes together with their branching ratios and matrix element codes
andy@48 721 ## Number of decay modes for a given particle (IDK)
andy@48 722 ## IDK(*), BRFRAC(*), NME(*) & IDKPRD(1-5,*)
andy@48 723 ## repeated for each mode.
andy@48 724 ## Repeated for each particle.
andy@48 725 ## IDK is the HERWIG code for the decaying particle, BRFRAC is the branching ratio of
andy@48 726 ## the decay mode. NME is a code for the matrix element to be used, either from the
andy@48 727 ## SUSY elements or the main HERWIG MEs. IDKPRD are the HERWIG identity codes of the decay products.
andy@48 728 for i, pid in enumerate(decays.keys()):
andy@48 729 # if not decays.has_key(pid):
andy@48 730 # continue
andy@124 731 hwid = pdgid2herwigid(pid)
andy@48 732 decayout = ""
andy@48 733 #decayout += "@@@@ %d %d %d\n" % (i, pid, hwid)
andy@48 734 for i_d, d in enumerate(decays[pid].decays):
andy@48 735 ## Skip decay if it has no branching ratio
andy@48 736 if ignorenobr and d.br == 0:
andy@48 737 continue
andy@71 738
andy@71 739 ## Identify decay matrix element to use
andy@59 740 ## From std HW docs, or from this pair:
andy@59 741 ## Two new matrix element codes have been added for these new decays:
andy@59 742 ## NME = 200 3 body top quark via charged Higgs
andy@59 743 ## 300 3 body R-parity violating gaugino and gluino decays
andy@71 744 nme = 0
andy@71 745 # TODO: Get correct condition for using ME 100... this guessed from some ISAWIG output
andy@71 746 if abs(pid) in (6, 12):
andy@71 747 nme = 100
andy@71 748 ## Extra SUSY MEs
andy@71 749 if len(d.ids) == 3:
andy@71 750 # TODO: How to determine the conditions for using 200 and 300 MEs? Enumeration of affected decays?
andy@71 751 pass
andy@147 752 decayout += "%d " + fmte + " %d " % (hwid, d.br, nme)
andy@71 753
andy@71 754 def is_quark(pid):
andy@71 755 return (abs(pid) in range(1, 7))
andy@71 756
andy@71 757 def is_lepton(pid):
andy@71 758 return (abs(pid) in range(11, 17))
andy@71 759
andy@71 760 def is_squark(pid):
andy@71 761 if abs(pid) in range(1000001, 1000007):
andy@71 762 return True
andy@71 763 if abs(pid) in range(2000001, 2000007):
andy@71 764 return True
andy@71 765 return False
andy@71 766
andy@71 767 def is_slepton(pid):
andy@71 768 if abs(pid) in range(1000011, 1000017):
andy@71 769 return True
andy@71 770 if abs(pid) in range(2000011, 2000016, 2):
andy@71 771 return True
andy@71 772 return False
andy@71 773
andy@71 774 def is_gaugino(pid):
andy@71 775 if abs(pid) in range(1000022, 1000026):
andy@71 776 return True
andy@71 777 if abs(pid) in (1000035, 1000037):
andy@71 778 return True
andy@71 779 return False
andy@71 780
andy@71 781 def is_susy(pid):
andy@71 782 return (is_squark(pid) or is_slepton(pid) or is_gaugino(pid) or pid == 1000021)
andy@71 783
andy@71 784 absids = map(abs, d.ids)
andy@71 785
andy@66 786 ## Order decay products as required by HERWIG
andy@66 787 ## Top
andy@66 788 if abs(pid) == 6:
andy@66 789 def cmp_bottomlast(a, b):
andy@66 790 """Comparison function which always puts b/bbar last"""
andy@66 791 if abs(a) == 5:
andy@66 792 return True
andy@71 793 if abs(b) == 5:
andy@66 794 return False
andy@66 795 return cmp(a, b)
andy@66 796 if len(absids) == 2:
andy@66 797 ## 2 body mode, to Higgs: Higgs; Bottom
andy@66 798 if (25 in absids or 26 in absids) and 5 in absids:
andy@66 799 d.ids = sorted(d.ids, key=cmp_bottomlast)
andy@66 800 elif len(absids) == 3:
andy@66 801 ## 3 body mode, via charged Higgs/W: quarks or leptons from W/Higgs; Bottom
andy@66 802 if 37 in absids or 23 in absids:
andy@66 803 d.ids = sorted(d.ids, key=cmp_bottomlast)
andy@66 804 ## Gluino
andy@66 805 elif abs(pid) == 1000021:
andy@66 806 if len(absids) == 2:
andy@66 807 ## 2 body mode
andy@66 808 ## without gluon: any order
andy@66 809 ## with gluon: gluon; colour neutral
andy@66 810 if 21 in absids:
andy@66 811 def cmp_gluonfirst(a, b):
andy@66 812 """Comparison function which always puts gluon first"""
andy@66 813 if a == 21:
andy@66 814 return False
andy@71 815 if b == 21:
andy@66 816 return True
andy@66 817 return cmp(a, b)
andy@66 818 d.ids = sorted(d.ids, key=cmp_gluonfirst)
andy@66 819 elif len(absids) == 3:
andy@66 820 ## 3-body modes, R-parity conserved: colour neutral; q or qbar
andy@70 821 def cmp_quarkslast(a, b):
andy@70 822 """Comparison function which always puts quarks last"""
andy@71 823 if is_quark(a):
andy@70 824 return True
andy@71 825 if is_quark(b):
andy@71 826 return False
andy@71 827 return cmp(a, b)
andy@71 828 d.ids = sorted(d.ids, key=cmp_quarkslast)
andy@71 829 ## Squark/Slepton
andy@71 830 elif is_squark(pid) or is_slepton(pid):
andy@73 831 def cmp_susy_quark_lepton(a, b):
andy@71 832 if is_susy(a):
andy@71 833 return False
andy@71 834 if is_susy(b):
andy@71 835 return True
andy@71 836 if is_quark(a):
andy@71 837 return False
andy@71 838 if is_quark(b):
andy@71 839 return True
andy@71 840 return cmp(a, b)
andy@71 841 ## 2 body modes: Gaugino/Gluino with Quark/Lepton Gaugino quark
andy@71 842 ## Gluino lepton
andy@71 843 ## 3 body modes: Weak sparticle particles from W decay
andy@71 844 ## Squark
andy@71 845 ## 2 body modes: Lepton Number Violated quark lepton
andy@71 846 ## Baryon number violated quark quark
andy@71 847 ## Slepton
andy@71 848 ## 2 body modes: Lepton Number Violated q or qbar
andy@71 849 d.ids = sorted(d.ids, key=cmp_bottomlast)
andy@71 850 ## Higgs
andy@71 851 elif pid in (25, 26):
andy@71 852 # TODO: Includes SUSY Higgses?
andy@71 853 ## Higgs
andy@71 854 ## 2 body modes: (s)quark-(s)qbar (s)q or (s)qbar
andy@71 855 ## (s)lepton-(s)lepton (s)l or (s)lbar
andy@71 856 ## 3 body modes: colour neutral q or qbar
andy@71 857 if len(absids) == 3:
andy@71 858 def cmp_quarkslast(a, b):
andy@71 859 """Comparison function which always puts quarks last"""
andy@71 860 if is_quark(a):
andy@71 861 return True
andy@71 862 if is_quark(b):
andy@71 863 return False
andy@71 864 return cmp(a, b)
andy@71 865 d.ids = sorted(d.ids, key=cmp_quarkslast)
andy@71 866 elif is_gaugino(pid):
andy@71 867 # TODO: Is there actually anything to do here?
andy@71 868 ## Gaugino
andy@71 869 ## 2 body modes: Squark-quark q or sq
andy@71 870 ## Slepton-lepton l or sl
andy@71 871 ##
andy@71 872 ## 3 body modes: R-parity conserved colour neutral q or qbar
andy@71 873 ## l or lbar
andy@71 874 if len(absids) == 3:
andy@71 875 def cmp_quarkslast(a, b):
andy@71 876 """Comparison function which always puts quarks last"""
andy@71 877 if is_quark(a):
andy@71 878 return True
andy@71 879 if is_quark(b):
andy@70 880 return False
andy@70 881 return cmp(a, b)
andy@70 882 d.ids = sorted(d.ids, key=cmp_quarkslast)
andy@66 883
andy@71 884 # TODO: Gaugino/Gluino
andy@67 885 ## 3 body modes: R-parity violating: Particles in the same order as the R-parity violating superpotential
andy@66 886
andy@66 887 ## Pad out IDs list with zeros
andy@48 888 ids = [0,0,0,0,0]
andy@48 889 for i, pid in enumerate(d.ids):
andy@48 890 ids[i] = pid
andy@48 891 ids = map(str, ids)
andy@48 892 decayout += " ".join(ids) + "\n"
andy@48 893 decayout = "%d\n" % decayout.count("\n") + decayout
andy@48 894 out += decayout
andy@48 895
andy@48 896 ## Now the SUSY parameters
andy@48 897 ## TANB, ALPHAH:
andy@147 898 out += (fmte + " " + fmte + "\n") % (blocks["MINPAR"].entries[3], blocks["ALPHA"].entries)
andy@48 899 ## Neutralino mixing matrix
andy@48 900 nmix = blocks["NMIX"].entries
andy@48 901 for i in xrange(1, 5):
andy@147 902 out += (fmte + " " + fmte + " " + fmte + " " + fmte + "\n") % (nmix[i][1], nmix[i][2], nmix[i][3], nmix[i][4])
andy@48 903 ## Chargino mixing matrices V and U
andy@48 904 vmix = blocks["VMIX"].entries
andy@147 905 out += (fmte + " " + fmte + " " + fmte + " " + fmte + "\n") % (vmix[1][1], vmix[1][2], vmix[2][1], vmix[2][2])
andy@48 906 umix = blocks["UMIX"].entries
andy@147 907 out += (fmte + " " + fmte + " " + fmte + " " + fmte + "\n") % (umix[1][1], umix[1][2], umix[2][1], umix[2][2])
andy@160 908 ## THETAT,THETAB,THETAL
andy@48 909 import math
andy@147 910 out += (fmte + " " + fmte + " " + fmte + " " + "\n") % (math.acos(blocks["STOPMIX"].entries[1][1]),
andy@147 911 math.acos(blocks["SBOTMIX"].entries[1][1]),
andy@147 912 math.acos(blocks["STAUMIX"].entries[1][1]))
andy@160 913 ## ATSS,ABSS,ALSS
andy@147 914 out += (fmte + " " + fmte + " " + fmte + " " + "\n") % (blocks["AU"].entries[3][3],
andy@147 915 blocks["AD"].entries[3][3],
andy@147 916 blocks["AE"].entries[3][3])
andy@160 917 ## MUSS == sign(mu)
andy@48 918 out += "%f\n" % blocks["MINPAR"].entries[4]
andy@48 919
andy@160 920 ## RPV SUSY
andy@160 921 isRPV = False
andy@160 922 out += "%d\n" % isRPV
andy@160 923 # TODO: Write RPV couplings if RPV is True (lambda1,2,3; 27 params in each, sci format.
andy@160 924 # TODO: Get the index orderings right
andy@160 925 # if isRPV: ...
andy@48 926
andy@48 927 return out
andy@48 928
andy@48 929
andy@161 930 ###############################################################################
andy@161 931 ## File-level functions
andy@161 932
andy@161 933
andy@161 934 def readSLHAFile(spcfilename, **kwargs):
andy@161 935 """
andy@161 936 Read an SLHA file, returning dictionaries of blocks and decays.
andy@161 937
andy@161 938 Other keyword parameters are passed to readSLHA.
andy@161 939 """
andy@161 940 f = open(spcfilename, "r")
andy@161 941 rtn = readSLHA(f.read(), kwargs)
andy@161 942 f.close()
andy@161 943 return rtn
andy@161 944
andy@161 945
andy@161 946 def writeSLHAFile(spcfilename, blocks, decays, **kwargs):
andy@161 947 """
andy@161 948 Write an SLHA file from the supplied blocks and decays dicts.
andy@161 949
andy@161 950 Other keyword parameters are passed to writeSLHA.
andy@161 951 """
andy@161 952 f = open(spcfilename, "w")
andy@161 953 f.write(writeSLHA(blocks, decays, kwargs))
andy@161 954 f.close()
andy@161 955
andy@161 956
andy@161 957 def readISAWIGFile(isafilename, **kwargs):
andy@161 958 """
andy@161 959 Read a spectrum definition from a file in the ISAWIG format, returning
andy@161 960 dictionaries of blocks and decays. While this is not an SLHA format, it is
andy@161 961 informally supported as a useful mechanism for converting ISAWIG spectra to
andy@161 962 SLHA.
andy@161 963
andy@161 964 Other keyword parameters are passed to readSLHA.
andy@161 965 """
andy@161 966 f = open(isafilename, "r")
andy@161 967 rtn = readISAWIG(f.read(), kwargs)
andy@161 968 f.close()
andy@161 969 return rtn
andy@161 970
andy@161 971
andy@161 972 def writeISAWIGFile(isafilename, blocks, decays, **kwargs):
andy@161 973 """
andy@161 974 Write an ISAWIG file from the supplied blocks and decays dicts.
andy@161 975
andy@161 976 Other keyword parameters are passed to writeISAWIG.
andy@161 977 """
andy@161 978 f = open(isafilename, "w")
andy@161 979 f.write(writeISAWIG(blocks, decays, kwargs))
andy@161 980 f.close()
andy@161 981
andy@161 982
andy@161 983 def writeISAJETFile(isafilename, blocks, decays, **kwargs):
andy@161 984 """
andy@161 985 Write an ISAJET file from the supplied blocks and decays dicts (see writeISAJET).
andy@161 986
andy@161 987 Other keyword parameters are passed to writeISAJET.
andy@161 988 """
andy@161 989 f = open(isafilename, "w")
andy@161 990 f.write(writeISAWIG(blocks, decays, kwargs))
andy@161 991 f.close()
andy@161 992
andy@161 993
andy@161 994
andy@161 995 ###############################################################################
andy@161 996 ## Main function for module testing
andy@161 997
andy@48 998
andy@1 999 if __name__ == "__main__":
andy@1 1000 import sys
andy@1 1001 for a in sys.argv[1:]:
andy@35 1002 if a.endswith(".isa"):
andy@35 1003 blocks, decays = readISAWIGFile(a)
andy@35 1004 else:
andy@35 1005 blocks, decays = readSLHAFile(a)
andy@3 1006
andy@5 1007 for bname, b in sorted(blocks.iteritems()):
andy@5 1008 print b
andy@5 1009 print
andy@3 1010
andy@47 1011 print blocks.keys()
andy@47 1012
andy@4 1013 print blocks["MASS"].entries[25]
andy@6 1014 print
andy@6 1015
andy@6 1016 for p in sorted(decays.values()):
andy@6 1017 print p
andy@6 1018 print
andy@29 1019
andy@31 1020 print writeSLHA(blocks, decays, ignorenobr=True)

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