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
// -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
namespace Rivet {
/// @brief Add a short analysis description here
class CLEO_1984_I193577 : public Analysis {
public :
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(CLEO_1984_I193577);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init () {
// Initialise and register projections
declare(FinalState(), "FS" );
// Book histograms
book(_c_hadrons, "/TMP/sigma_hadrons" );
book(_c_muons, "/TMP/sigma_muons" );
}
/// 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;
}
// mu+mu- + photons
if (nCount[- 13 ]== 1 and nCount[13 ]== 1 &&
ntotal== 2 + nCount[22 ])
_c_muons-> fill();
// everything else
else
_c_hadrons-> fill();
}
/// Normalise histograms etc., after the run
void finalize () {
Scatter1D R = * _c_hadrons/ * _c_muons;
double rval = R.point(0 ).x();
pair< double ,double > rerr = R.point(0 ).xErrs();
double fact = crossSection()/ sumOfWeights() / picobarn;
double sig_h = _c_hadrons-> val()* fact;
double err_h = _c_hadrons-> err()* fact;
double sig_m = _c_muons -> val()* fact;
double err_m = _c_muons -> err()* fact;
Scatter2D temphisto(refData(1 , 1 , 1 ));
Scatter2DPtr hadrons;
book(hadrons, "sigma_hadrons" );
Scatter2DPtr muons;
book(muons, "sigma_muons" );
Scatter2DPtr mult;
book(mult, 1 , 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, rval, ex, rerr);
hadrons-> addPoint(x, sig_h, ex, make_pair(err_h,err_h));
muons -> addPoint(x, sig_m, ex, make_pair(err_m,err_m));
}
else {
mult -> addPoint(x, 0. , ex, make_pair(0. ,.0 ));
hadrons-> addPoint(x, 0. , ex, make_pair(0. ,.0 ));
muons -> addPoint(x, 0. , ex, make_pair(0. ,.0 ));
}
}
}
//@}
/// @name Histograms
//@{
CounterPtr _c_hadrons, _c_muons;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(CLEO_1984_I193577);
}