Rivet analyses referenceATLAS_2014_I1282447W + charm production at 7 TeVExperiment: ATLAS (LHC) Inspire ID: 1282447 Status: VALIDATED Authors:
Beam energies: (3500.0, 3500.0) GeV Run details:
This routine implements the measurement of $W$ boson production in association with a single charm quark with $4.6 \text{fb}^{-1}$ of $pp$ collision data at $\sqrt{s} = 7$ TeV collected with the ATLAS detector at the Large Hadron Collider. Results are quoted for the $W$ boson production decaying into either an electron or muon and the charm quark being identified as any charmed hadron above 5 GeV inside $\Delta R = 0.4$ of a jet with more than 25 GeV. Alternatively the presence of the charm quark is indicated by the presence of a $D$ or a $D^*$ meson with a $p_\text{T}$ above 8 GeV. The cross sections are quoted for the number of opposite sign minus same sign events, where the signs under consideration are the charge of the $W$ boson and the charmed hadrons tagging the event. Given are the integrated and differential cross sections as a function of the pseudorapidity of the lepton from the $W$-boson decay are measured. Additionally, the cross-section ratios $\sigma(W^+ + bar{c}) / \sigma(W^- + c)$ as well as the $p_\text{T}$ dependent cross sections of the $D$/$D^*$ mesons normalized to the $W$ inclusive cross sections are published. The measured data is unfolded to the Born level. One should therefore take care to run on samples without QED radiation off of the electrons. IMPORTANT NOTICE --- For the MC predictions in the paper, the branching fractions to $D$ and $D^*$ mesons have been adapted to be 0.2256 ($D$) and 0.2287 ($D^*$) (LEP/HERA combination). Some suggestion on how to do post-processing -- in case separate samples for $W^+ + c$ and $W^- + c$ and inclusive $W$ are used -- are included in the cc-file. This post-processing is needed to properly display the histograms for the cross section ratio plots $\sigma(W^+ + bar{c}) / \sigma(W^- + c)$ as well as for the cross section ratios of $W + D^{(*)}$ production over inclusive $W$ production ($\sigma(W^{+/-} D^{(*)}) / \sigma(W^{+/-})$) as a function of the $D^{(*)}$ meson transverse momentum. Source code: ATLAS_2014_I1282447.cc 1// -*- C++ -*-
2#include "Rivet/Analysis.hh"
3#include "Rivet/Projections/UnstableParticles.hh"
4#include "Rivet/Projections/ChargedFinalState.hh"
5#include "Rivet/Projections/PromptFinalState.hh"
6#include "Rivet/Projections/VetoedFinalState.hh"
7#include "Rivet/Projections/MissingMomentum.hh"
8#include "Rivet/Projections/LeptonFinder.hh"
9#include "Rivet/Projections/FastJets.hh"
10
11namespace Rivet {
12
13
14 /// @brief ATLAS W+c at 7 TeV
15 ///
16 /// This routine implements the ATLAS 7 TeV pp W+c analysis.
17 ///
18 /// Apart from those histograms described and published on HepData, there
19 /// are some helper histograms:
20 ///
21 /// - d02-x01-y01, d02-x01-y02 and d08-x01-y01 are ratios, the nominator ("_plus")
22 /// and denominator ("_minus") histograms are also given, so that the ratios can
23 /// be reconstructed if need be (e.g. when running on separate samples).
24 ///
25 /// - d05 and d06 are ratios over inclusive W production.
26 /// The routine has to be run on a sample for inclusive W production in order to
27 /// make sure the denominator ("_winc") is correctly filled.
28 ///
29 /// The ratios can be constructed using the following sample code:
30 ///
31 /// ```python
32 /// ## python divideWCharm.py
33 ///
34 /// import yoda
35 /// hists_wc = yoda.read("Rivet_Wc.yoda")
36 /// hists_winc = yoda.read("Rivet_Winc.yoda")
37 ///
38 /// ## division histograms --> ONLY for different plus minus runs
39 /// # (merge before using yodamerge Rivet_plus.yoda Rivet_minus.yoda > Rivet_Wc.yoda)
40 ///
41 /// d02y01_plus = hists_wc["/ATLAS_2014_I1282447/d02-x01-y01_plus"]
42 /// d02y01_minus = hists_wc["/ATLAS_2014_I1282447/d02-x01-y01_minus"]
43 /// ratio_d02y01 = d02y01_plus.divide(d02y01_minus)
44 /// ratio_d02y01.path = "/ATLAS_2014_I1282447/d02-x01-y01"
45 ///
46 /// d02y02_plus = hists_wc["/ATLAS_2014_I1282447/d02-x01-y02_plus"]
47 /// d02y02_minus = hists_wc["/ATLAS_2014_I1282447/d02-x01-y02_minus"]
48 /// ratio_d02y02= d02y02_plus.divide(d02y02_minus)
49 /// ratio_d02y02.path = "/ATLAS_2014_I1282447/d02-x01-y02"
50 ///
51 /// d08y01_plus = hists_wc["/ATLAS_2014_I1282447/d08-x01-y01_plus"]
52 /// d08y01_minus = hists_wc["/ATLAS_2014_I1282447/d08-x01-y01_minus"]
53 /// ratio_d08y01= d08y01_plus.divide(d08y01_minus)
54 /// ratio_d08y01.path = "/ATLAS_2014_I1282447/d08-x01-y01"
55 ///
56 /// # inclusive cross section
57 /// h_winc = hists_winc["/ATLAS_2014_I1282447/d05-x01-y01"]
58 /// h_d = hists_wc["/ATLAS_2014_I1282447/d01-x01-y02"]
59 /// h_dstar= hists_wc["/ATLAS_2014_I1282447/d01-x01-y03"]
60 ///
61 /// ratio_wd = h_d.divide(h_winc)
62 /// ratio_wd.path = "/ATLAS_2014_I1282447/d05-x01-y02"
63 ///
64 /// ratio_wdstar = h_d.divide(h_winc)
65 /// ratio_wdstar.path = "/ATLAS_2014_I1282447/d05-x01-y03"
66 ///
67 /// # pT differential
68 /// h_winc_plus = hists_winc["/ATLAS_2014_I1282447/d06-x01-y01_winc"]
69 /// h_winc_minus = hists_winc["/ATLAS_2014_I1282447/d06-x01-y02_winc"]
70 ///
71 /// h_wd_plus = hists_wc["/ATLAS_2014_I1282447/d06-x01-y01_wplus"]
72 /// h_wd_minus = hists_wc["/ATLAS_2014_I1282447/d06-x01-y02_wminus"]
73 /// h_wdstar_plus = hists_wc["/ATLAS_2014_I1282447/d06-x01-y03_wplus"]
74 /// h_wdstar_minus = hists_wc["/ATLAS_2014_I1282447/d06-x01-y04_wminus"]
75 ///
76 /// ratio_wd_plus = h_wd_plus.divide(h_winc_plus)
77 /// ratio_wd_plus.path = "/ATLAS_2014_I1282447/d06-x01-y01"
78 /// ratio_wd_minus = h_wd_plus.divide(h_winc_minus)
79 /// ratio_wd_minus.path = "/ATLAS_2014_I1282447/d06-x01-y02"
80 ///
81 /// ratio_wdstar_plus = h_wdstar_plus.divide(h_winc_plus)
82 /// ratio_wdstar_plus.path = "/ATLAS_2014_I1282447/d06-x01-y03"
83 /// ratio_wdstar_minus = h_wdstar_plus.divide(h_winc_minus)
84 /// ratio_wdstar_minus.path = "/ATLAS_2014_I1282447/d06-x01-y04"
85 ///
86 /// ratio_wd_plus = h_wd_plus.divide(h_winc_plus)
87 /// ratio_wd_plus.path = "/ATLAS_2014_I1282447/d06-x01-y01"
88 /// ratio_wd_minus = h_wd_plus.divide(h_winc_minus)
89 /// ratio_wd_minus.path = "/ATLAS_2014_I1282447/d06-x01-y02"
90 ///
91 /// h_winc_plus= hists_winc["/ATLAS_2014_I1282447/d06-x01-y01_winc"]
92 /// h_winc_minus= hists_winc["/ATLAS_2014_I1282447/d06-x01-y02_winc"]
93 ///
94 /// ## copy other histograms for plotting
95 ///
96 /// d01x01y01= hists_wc["/ATLAS_2014_I1282447/d01-x01-y01"]
97 /// d01x01y01.path = "/ATLAS_2014_I1282447/d01-x01-y01"
98 ///
99 /// d01x01y02= hists_wc["/ATLAS_2014_I1282447/d01-x01-y02"]
100 /// d01x01y02.path = "/ATLAS_2014_I1282447/d01-x01-y02"
101 ///
102 /// d01x01y03= hists_wc["/ATLAS_2014_I1282447/d01-x01-y03"]
103 /// d01x01y03.path = "/ATLAS_2014_I1282447/d01-x01-y03"
104 ///
105 /// d03x01y01= hists_wc["/ATLAS_2014_I1282447/d03-x01-y01"]
106 /// d03x01y01.path = "/ATLAS_2014_I1282447/d03-x01-y01"
107 ///
108 /// d03x01y02= hists_wc["/ATLAS_2014_I1282447/d03-x01-y02"]
109 /// d03x01y02.path = "/ATLAS_2014_I1282447/d03-x01-y02"
110 ///
111 /// d04x01y01= hists_wc["/ATLAS_2014_I1282447/d04-x01-y01"]
112 /// d04x01y01.path = "/ATLAS_2014_I1282447/d04-x01-y01"
113 ///
114 /// d04x01y02= hists_wc["/ATLAS_2014_I1282447/d04-x01-y02"]
115 /// d04x01y02.path = "/ATLAS_2014_I1282447/d04-x01-y02"
116 ///
117 /// d04x01y03= hists_wc["/ATLAS_2014_I1282447/d04-x01-y03"]
118 /// d04x01y03.path = "/ATLAS_2014_I1282447/d04-x01-y03"
119 ///
120 /// d04x01y04= hists_wc["/ATLAS_2014_I1282447/d04-x01-y04"]
121 /// d04x01y04.path = "/ATLAS_2014_I1282447/d04-x01-y04"
122 ///
123 /// d07x01y01= hists_wc["/ATLAS_2014_I1282447/d07-x01-y01"]
124 /// d07x01y01.path = "/ATLAS_2014_I1282447/d07-x01-y01"
125 ///
126 /// yoda.write([ratio_d02y01,ratio_d02y02,ratio_d08y01, ratio_wd ,ratio_wdstar,ratio_wd_plus,ratio_wd_minus ,ratio_wdstar_plus,ratio_wdstar_minus,d01x01y01,d01x01y02,d01x01y03,d03x01y01,d03x01y02,d04x01y01,d04x01y02,d04x01y03,d04x01y04,d07x01y01],"validation.yoda")
127 /// ```
128 ///
129 class ATLAS_2014_I1282447 : public Analysis {
130 public:
131
132 /// Constructor
133 RIVET_DEFAULT_ANALYSIS_CTOR(ATLAS_2014_I1282447);
134
135
136 /// @name Analysis methods
137 /// @{
138
139 /// Book histograms and initialise projections before the run
140 void init() {
141
142 // Initialise and register projections here
143 Cut cuts = Cuts::abseta < 2.5 && Cuts::pT > 20*GeV;
144
145 /// @note Should use sample WITHOUT QED radiation off the electron
146 ///
147 /// @warning This plus PhotonOrigin::ALL would mean dressing only with pi0 -> y y photons!?!
148 declare("MET", MissingMomentum());
149 LeptonFinder ef(0.1, cuts && Cuts::abspid == PID::ELECTRON);
150 declare(ef, "Elecs");
151 LeptonFinder mf(0.1, cuts && Cuts::abspid == PID::MUON);
152 declare(mf, "Muons");
153
154 // all hadrons that could be coming from a charm decay --
155 // -- for safety, use region -3.5 - 3.5
156 declare(UnstableParticles(Cuts::abseta < 3.5), "hadrons");
157
158 // Input for the jets: no neutrinos, no muons, and no electron which passed the electron cuts
159 // also: NO electron, muon or tau (needed due to ATLAS jet truth reconstruction feature)
160 VetoedFinalState veto;
161 veto.addVetoOnThisFinalState(ef);
162 veto.addVetoOnThisFinalState(mf);
163 veto.addVetoPairId(PID::ELECTRON);
164 veto.addVetoPairId(PID::MUON);
165 veto.addVetoPairId(PID::TAU);
166
167 FastJets jets(veto, JetAlg::ANTIKT, 0.4);
168 declare(jets, "jets");
169
170 // Book histograms
171
172 // charge separated integrated cross sections
173 book(_hist_wcjet_charge ,"d01-x01-y01");
174 book(_hist_wd_charge ,"d01-x01-y02");
175 book(_hist_wdstar_charge ,"d01-x01-y03");
176
177 // charge integrated total cross sections
178 book(_hist_wcjet_ratio,"d02-x01-y01");
179 book(_hist_wd_ratio ,"d02-x01-y02");
180
181 book(_hist_wcjet_minus ,"d02-x01-y01_minus");
182 book(_hist_wd_minus ,"d02-x01-y02_minus");
183
184 book(_hist_wcjet_plus ,"d02-x01-y01_plus");
185 book(_hist_wd_plus ,"d02-x01-y02_plus");
186
187 // eta distributions
188 book(_hist_wplus_wcjet_eta_lep ,"d03-x01-y01");
189 book(_hist_wminus_wcjet_eta_lep ,"d03-x01-y02");
190
191 book(_hist_wplus_wdminus_eta_lep ,"d04-x01-y01");
192 book(_hist_wminus_wdplus_eta_lep ,"d04-x01-y02");
193 book(_hist_wplus_wdstar_eta_lep ,"d04-x01-y03");
194 book(_hist_wminus_wdstar_eta_lep ,"d04-x01-y04");
195
196 // ratio of cross section (WD over W inclusive) // postprocess!
197 book(_hist_w_inc ,"d05-x01-y01");
198 book(_hist_wd_winc_ratio ,"d05-x01-y02");
199 book(_hist_wdstar_winc_ratio,"d05-x01-y03");
200
201 // ratio of cross section (WD over W inclusive -- function of pT of D meson)
202 book(_hist_wplusd_wplusinc_pt_ratio ,"d06-x01-y01");
203 book(_hist_wminusd_wminusinc_pt_ratio ,"d06-x01-y02");
204 book(_hist_wplusdstar_wplusinc_pt_ratio ,"d06-x01-y03");
205 book(_hist_wminusdstar_wminusinc_pt_ratio,"d06-x01-y04");
206
207 // could use for postprocessing!
208 book(_hist_wplusd_wplusinc_pt ,"d06-x01-y01_wplus");
209 book(_hist_wminusd_wminusinc_pt ,"d06-x01-y02_wminus");
210 book(_hist_wplusdstar_wplusinc_pt ,"d06-x01-y03_wplus");
211 book(_hist_wminusdstar_wminusinc_pt ,"d06-x01-y04_wminus");
212
213 book(_hist_wplus_winc ,"d06-x01-y01_winc");
214 book(_hist_wminus_winc ,"d06-x01-y02_winc");
215
216 // jet multiplicity of charge integrated W+cjet cross section (+0 or +1 jet in addition to the charm jet)
217 book(_hist_wcjet_jets ,"d07-x01-y01");
218
219 // jet multiplicity of W+cjet cross section ratio (+0 or +1 jet in addition to the charm jet)
220 book(_hist_wcjet_jets_ratio ,"d08-x01-y01");
221 book(_hist_wcjet_jets_plus ,"d08-x01-y01_plus");
222 book(_hist_wcjet_jets_minus ,"d08-x01-y01_minus");
223 }
224
225
226 /// Perform the per-event analysis
227 void analyze(const Event& event) {
228
229 double charge_weight = 0; // account for OS/SS events
230 int lepton_charge = 0;
231 double lepton_eta = 0.;
232
233 /// Find leptons
234 const P4& pmiss = apply<MissingMom>(event, "MET").missingMom();
235 if (pmiss.Et() < 25*GeV) vetoEvent;
236
237 // Identify the closest-matching l+MET to m == mW
238 const Particles& es = apply<LeptonFinder>(event, "Elecs").particles();
239 const int iefound = closestMatchIndex(es, pmiss, Kin::mass, 80.4*GeV, 15*GeV);
240 const Particles& mus = apply<LeptonFinder>(event, "Muons").particles();
241 const int imfound = closestMatchIndex(mus, pmiss, Kin::mass, 80.4*GeV, 15*GeV);
242 if (iefound < 0 && imfound < 0) {
243 MSG_DEBUG("No W bosons found");
244 vetoEvent;
245 }
246 if (iefound >= 0 && imfound >= 0) {
247 MSG_DEBUG("Multiple W bosons found");
248 vetoEvent;
249 }
250
251 bool keepevent = false;
252
253 //check electrons
254 if (iefound >= 0) {
255 const Particle& el = es[iefound];
256 if (mT(pmiss, el) > 40*GeV) {
257 keepevent = true;
258 lepton_charge = el.charge();
259 lepton_eta = el.abseta();
260 }
261 }
262
263 //check muons
264 if (imfound >= 0) {
265 const Particle& mu = mus[imfound];
266 if (mT(pmiss, mu) > 40*GeV) {
267 keepevent = true;
268 lepton_charge = mu.charge();
269 lepton_eta = mu.abseta();
270 }
271 }
272
273 if (!keepevent) {
274 MSG_DEBUG("Event does not pass mT cuts");
275 vetoEvent;
276 }
277
278 if (lepton_charge > 0) {
279 _hist_wplus_winc->fill(10.);
280 _hist_wplus_winc->fill(16.);
281 _hist_wplus_winc->fill(30.);
282 _hist_wplus_winc->fill(60.);
283 _hist_w_inc->fill(+1);
284 }
285 else if (lepton_charge < 0) {
286 _hist_wminus_winc->fill(10.);
287 _hist_wminus_winc->fill(16.);
288 _hist_wminus_winc->fill(30.);
289 _hist_wminus_winc->fill(60.);
290 _hist_w_inc->fill(-1);
291 }
292
293 // Find hadrons in the event
294 const UnstableParticles& fs = apply<UnstableParticles>(event, "hadrons");
295
296 /// FIND Different channels
297 // 1: wcjet
298 // get jets
299 const Jets& jets = apply<FastJets>(event, "jets").jetsByPt(Cuts::pT > 25.0*GeV && Cuts::abseta < 2.5);
300 // loop over jets to select jets used to match to charm
301 Jets js;
302 int matched_charmHadron = 0;
303 double charm_charge = 0.;
304 int njets = 0;
305 int nj = 0;
306 bool mat_jet = false;
307
308 double ptcharm = 0;
309 if (matched_charmHadron > -1) {
310 for (const Jet& j : jets) {
311 mat_jet = false;
312
313 njets += 1;
314 for (const Particle& p : fs.particles()) {
315 /// @todo Avoid touching HepMC!
316 ConstGenParticlePtr part = p.genParticle();
317 if (p.hasCharm()) {
318 //if(isFromBDecay(p)) continue;
319 if (p.fromBottom()) continue;
320 if (p.pT() < 5*GeV ) continue;
321 if (hasCharmedChildren(part)) continue;
322 if (deltaR(p, j) < 0.3) {
323 mat_jet = true;
324 if (p.pT() > ptcharm) {
325 charm_charge = part->pdg_id();
326 ptcharm = p.pT();
327 }
328 }
329 }
330 }
331 if (mat_jet) nj++;
332 }
333
334 if (charm_charge * lepton_charge > 0) charge_weight = -1;
335 else charge_weight = +1;
336
337 if (nj == 1) {
338 if (lepton_charge > 0) {
339 _hist_wcjet_charge ->fill( 1, charge_weight);
340 _hist_wcjet_plus ->fill( 0, charge_weight);
341 _hist_wplus_wcjet_eta_lep ->fill(lepton_eta, charge_weight);
342 _hist_wcjet_jets_plus ->fill(njets-1 , charge_weight);
343 }
344 else if (lepton_charge < 0) {
345 _hist_wcjet_charge ->fill( -1, charge_weight);
346 _hist_wcjet_minus ->fill( 0, charge_weight);
347 _hist_wminus_wcjet_eta_lep->fill(lepton_eta, charge_weight);
348 _hist_wcjet_jets_minus ->fill(njets-1 , charge_weight);
349 }
350
351 _hist_wcjet_jets->fill(njets-1, charge_weight);
352 }
353 }
354
355 // // 1/2: w+d(*) meson
356
357 for (const Particle& p : fs.particles()) {
358
359 /// @todo Avoid touching HepMC!
360 ConstGenParticlePtr part = p.genParticle();
361 if (p.pT() < 8*GeV) continue;
362 if (fabs(p.eta()) > 2.2) continue;
363
364 // W+D
365 if (abs(part->pdg_id()) == 411) {
366 if (lepton_charge * part->pdg_id() > 0) charge_weight = -1;
367 else charge_weight = +1;
368
369 // fill histos
370 if (lepton_charge > 0) {
371 _hist_wd_charge ->fill( 1, charge_weight);
372 _hist_wd_plus ->fill( 0, charge_weight);
373 _hist_wplus_wdminus_eta_lep->fill(lepton_eta, charge_weight);
374 _hist_wplusd_wplusinc_pt ->fill( p.pT(), charge_weight);
375 }
376 else if (lepton_charge < 0) {
377 _hist_wd_charge ->fill( -1, charge_weight);
378 _hist_wd_minus ->fill( 0, charge_weight);
379 _hist_wminus_wdplus_eta_lep->fill(lepton_eta, charge_weight);
380 _hist_wminusd_wminusinc_pt ->fill(p.pT() , charge_weight);
381 }
382 }
383
384 // W+Dstar
385 if ( abs(part->pdg_id()) == 413 ) {
386 if (lepton_charge*part->pdg_id() > 0) charge_weight = -1;
387 else charge_weight = +1;
388
389 if (lepton_charge > 0) {
390 _hist_wdstar_charge->fill(+1, charge_weight);
391 _hist_wd_plus->fill( 0, charge_weight);
392 _hist_wplus_wdstar_eta_lep->fill( lepton_eta, charge_weight);
393 _hist_wplusdstar_wplusinc_pt->fill( p.pT(), charge_weight);
394 }
395 else if (lepton_charge < 0) {
396 _hist_wdstar_charge->fill(-1, charge_weight);
397 _hist_wd_minus->fill(0, charge_weight);
398 _hist_wminus_wdstar_eta_lep->fill(lepton_eta, charge_weight);
399 _hist_wminusdstar_wminusinc_pt->fill(p.pT(), charge_weight);
400 }
401 }
402 }
403
404 }
405
406
407 /// Normalise histograms etc., after the run
408 void finalize() {
409
410 const double sf = crossSection()/picobarn / sumOfWeights();
411
412 // norm to cross section
413 // d01
414 scale(_hist_wcjet_charge, sf);
415 scale(_hist_wd_charge, sf);
416 scale(_hist_wdstar_charge, sf);
417
418 //d02
419 scale(_hist_wcjet_plus, sf);
420 scale(_hist_wcjet_minus, sf);
421 scale(_hist_wd_plus, sf);
422 scale(_hist_wd_minus, sf);
423
424 divide(_hist_wcjet_plus, _hist_wcjet_minus, _hist_wcjet_ratio);
425 divide(_hist_wd_plus, _hist_wd_minus, _hist_wd_ratio );
426
427 //d03
428 scale(_hist_wplus_wcjet_eta_lep, sf);
429 scale(_hist_wminus_wcjet_eta_lep, sf);
430
431 //d04
432 scale(_hist_wplus_wdminus_eta_lep, crossSection()/picobarn/sumOfWeights());
433 scale(_hist_wminus_wdplus_eta_lep, crossSection()/picobarn/sumOfWeights());
434
435 scale(_hist_wplus_wdstar_eta_lep , crossSection()/picobarn/sumOfWeights());
436 scale(_hist_wminus_wdstar_eta_lep, crossSection()/picobarn/sumOfWeights());
437
438 //d05
439 scale(_hist_w_inc, 0.01 * sf); // in percent --> /100
440 divide(_hist_wd_charge, _hist_w_inc, _hist_wd_winc_ratio );
441 divide(_hist_wdstar_charge, _hist_w_inc, _hist_wdstar_winc_ratio);
442
443 //d06, in percentage!
444 scale(_hist_wplusd_wplusinc_pt, sf);
445 scale(_hist_wminusd_wminusinc_pt, sf);
446 scale(_hist_wplusdstar_wplusinc_pt, sf);
447 scale(_hist_wminusdstar_wminusinc_pt, sf);
448
449 scale(_hist_wplus_winc, 0.01 * sf); // in percent --> /100
450 scale(_hist_wminus_winc, 0.01 * sf); // in percent --> /100
451
452 divide(_hist_wplusd_wplusinc_pt, _hist_wplus_winc , _hist_wplusd_wplusinc_pt_ratio );
453 divide(_hist_wminusd_wminusinc_pt, _hist_wminus_winc, _hist_wminusd_wminusinc_pt_ratio );
454 divide(_hist_wplusdstar_wplusinc_pt, _hist_wplus_winc , _hist_wplusdstar_wplusinc_pt_ratio );
455 divide(_hist_wminusdstar_wminusinc_pt, _hist_wminus_winc, _hist_wminusdstar_wminusinc_pt_ratio);
456
457 //d07
458 scale(_hist_wcjet_jets, sf);
459
460 //d08
461 scale(_hist_wcjet_jets_minus, sf);
462 scale(_hist_wcjet_jets_plus, sf);
463 divide(_hist_wcjet_jets_plus, _hist_wcjet_jets_minus , _hist_wcjet_jets_ratio);
464 }
465
466 /// @}
467
468
469 private:
470
471 // Data members like post-cuts event weight counters go here
472
473 /// Check whether particle comes from b-decay
474 ///
475 /// @note Slight difference wrt Rivet's native Particle::fromBottom method!
476 bool isFromBDecay(const Particle& p) {
477 return p.hasAncestorWith([](const Particle& p)->bool{return p.hasBottom();});
478 }
479
480 /// Check whether particle has charmed children
481 ///
482 /// @todo Use built-in method and avoid HepMC!
483 bool hasCharmedChildren(ConstGenParticlePtr part) {
484
485 bool hasCharmedChild = false;
486 if (part == nullptr) return false;
487
488 ConstGenVertexPtr ivtx = part->end_vertex();
489 if (ivtx == nullptr) return false;
490
491 for (ConstGenParticlePtr p2: HepMCUtils::particles(ivtx, Relatives::CHILDREN)) {
492 if (p2 == part) continue;
493 hasCharmedChild = PID::hasCharm(p2->pdg_id());
494 if (hasCharmedChild == true) break;
495 hasCharmedChild = hasCharmedChildren(p2);
496 if (hasCharmedChild == true) break;
497 }
498 return hasCharmedChild;
499 }
500
501
502 private:
503
504 /// @name Histograms
505 /// @{
506
507 //d01-x01-
508 Histo1DPtr _hist_wcjet_charge;
509 Histo1DPtr _hist_wd_charge;
510 Histo1DPtr _hist_wdstar_charge;
511
512 //d02-x01-
513 Estimate1DPtr _hist_wcjet_ratio;
514 Estimate1DPtr _hist_wd_ratio;
515 Histo1DPtr _hist_wcjet_plus;
516 Histo1DPtr _hist_wd_plus;
517
518 Histo1DPtr _hist_wcjet_minus;
519 Histo1DPtr _hist_wd_minus;
520
521 //d03-x01-
522 Histo1DPtr _hist_wplus_wcjet_eta_lep;
523 Histo1DPtr _hist_wminus_wcjet_eta_lep;
524
525 //d04-x01-
526 Histo1DPtr _hist_wplus_wdminus_eta_lep;
527 Histo1DPtr _hist_wminus_wdplus_eta_lep;
528
529 //d05-x01-
530 Histo1DPtr _hist_wplus_wdstar_eta_lep;
531 Histo1DPtr _hist_wminus_wdstar_eta_lep;
532
533 // postprocessing histos
534 //d05-x01
535 Histo1DPtr _hist_w_inc;
536 Estimate1DPtr _hist_wd_winc_ratio;
537 Estimate1DPtr _hist_wdstar_winc_ratio;
538
539 //d06-x01
540 Histo1DPtr _hist_wplus_winc;
541 Histo1DPtr _hist_wminus_winc;
542
543 Estimate1DPtr _hist_wplusd_wplusinc_pt_ratio;
544 Estimate1DPtr _hist_wminusd_wminusinc_pt_ratio;
545 Estimate1DPtr _hist_wplusdstar_wplusinc_pt_ratio;
546 Estimate1DPtr _hist_wminusdstar_wminusinc_pt_ratio;
547
548 Histo1DPtr _hist_wplusd_wplusinc_pt ;
549 Histo1DPtr _hist_wminusd_wminusinc_pt;
550 Histo1DPtr _hist_wplusdstar_wplusinc_pt;
551 Histo1DPtr _hist_wminusdstar_wminusinc_pt;
552
553 // d07-x01
554 Histo1DPtr _hist_wcjet_jets ;
555
556 //d08-x01
557 Estimate1DPtr _hist_wcjet_jets_ratio ;
558 Histo1DPtr _hist_wcjet_jets_plus ;
559 Histo1DPtr _hist_wcjet_jets_minus;
560 /// @}
561
562 };
563
564
565 RIVET_DECLARE_PLUGIN(ATLAS_2014_I1282447);
566
567}
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