Rivet Analyses Reference
TASSO_1984_I194774
$D_s^\pm$ spectra at 34.7 GeV
Experiment: TASSO (PETRA)
Inspire ID: 194774
Status: VALIDATED
Authors:References:- Phys.Lett.B 136 (1984) 130-134, 1984
Beams: e+ e-
Beam energies: (17.4, 17.4) GeV
Run details:Measurement of the $D_s^\pm$ spectra at 34.7 GeV by the TASSO experiment, the PDG2020 value of $D^+_s\to\phi\pi^+$ branching ratio is used.
Source code:
TASSO_1984_I194774.cc 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
| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief D_s spectrum at 34.7
class TASSO_1984_I194774 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(TASSO_1984_I194774);
/// @name Analysis methods
///@{
/// Book histograms and initialise projections before the run
void init() {
declare(UnstableParticles(), "UFS");
book(_h_Ds ,1,1,1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
UnstableParticles ufs = apply<UnstableParticles>(event,"UFS");
for(const Particle & p : ufs.particles(Cuts::abspid==431)) {
double xE = 2.*p.E()/sqrtS();
Vector3 mom3 = p.p3();
const double energy = p.E();
double modp = mom3.mod();
double beta = modp/energy;
_h_Ds ->fill(xE,1./beta);
}
}
/// Normalise histograms etc., after the run
void finalize() {
scale( _h_Ds , sqr(sqrtS())*crossSection()/nanobarn/sumOfWeights());
}
///@}
/// @name Histograms
///@{
Histo1DPtr _h_Ds;
///@}
};
RIVET_DECLARE_PLUGIN(TASSO_1984_I194774);
}
|