1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief Add a short analysis description here
class BABAR_2017_I1591716 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(BABAR_2017_I1591716);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
declare(FinalState(), "FS");
declare(UnstableParticles(), "UFS");
book(_nKKpipi, "TMP/KKpipi");
book(_nKKpieta, "TMP/KKpieta");
}
void findChildren(const Particle & p,map<long,int> & nRes, int &ncount) {
for (const Particle &child : p.children()) {
if(child.children().empty()) {
nRes[child.pid()]-=1;
--ncount;
}
else
findChildren(child,nRes,ncount);
}
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const FinalState& fs = apply<FinalState>(event, "FS");
map<long,int> nCount;
int ntotal(0);
for (const Particle& p : fs.particles()) {
nCount[p.pid()] += 1;
++ntotal;
}
// stable histos
if( ntotal == 4 && nCount[310] == 1 && nCount[111] == 1 &&
( (nCount[ 321]==1 && nCount[-211]==1) ||
(nCount[-321]==1 && nCount[ 211]==1)))
_nKKpipi->fill();
// unstable particles
const FinalState& ufs = apply<FinalState>(event, "UFS");
for (const Particle& p : ufs.particles()) {
if(p.children().empty()) continue;
if(p.pid()!=221) continue;
map<long,int> nRes=nCount;
int ncount = ntotal;
findChildren(p,nRes,ncount);
bool matched = true;
if(p.pid()==221 && ncount==3) {
for(auto const & val : nRes) {
if(val.first==310 || val.first==111) {
if(val.second!=1) {
matched = false;
break;
}
}
else if(abs(val.first)==321 || abs(val.first)==211)
continue;
else if(val.second!=0) {
matched = false;
break;
}
}
if(matched) {
if((nRes[321]==1 && nRes[-211]==1 && nRes[-321]==0 && nRes[211]==0) ||
(nRes[321]==0 && nRes[-211]==0 && nRes[-321]==1 && nRes[211]==1))
_nKKpieta->fill();
}
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
for(unsigned int ix=1;ix<3;++ix) {
double sigma = 0., error = 0.;
if(ix==1) {
sigma = _nKKpipi->val();
error = _nKKpipi->err();
}
else if (ix==2) {
sigma = _nKKpieta->val();
error = _nKKpieta->err();
}
sigma *= crossSection()/ sumOfWeights() /nanobarn;
error *= crossSection()/ sumOfWeights() /nanobarn;
Scatter2D temphisto(refData(ix, 1, 1));
Scatter2DPtr mult;
book(mult, ix, 1, 1);
for (size_t b = 0; b < temphisto.numPoints(); b++) {
const double x = temphisto.point(b).x();
pair<double,double> ex = temphisto.point(b).xErrs();
pair<double,double> ex2 = ex;
if(ex2.first ==0.) ex2. first=0.0001;
if(ex2.second==0.) ex2.second=0.0001;
if (inRange(sqrtS()/GeV, x-ex2.first, x+ex2.second)) {
mult->addPoint(x, sigma, ex, make_pair(error,error));
}
else {
mult->addPoint(x, 0., ex, make_pair(0.,.0));
}
}
}
}
//@}
/// @name Histograms
//@{
CounterPtr _nKKpipi,_nKKpieta;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(BABAR_2017_I1591716);
}
|