Rivet Analyses Reference
CLEOII_1999_I501417
Spectra for $\Xi_c(2815)^{+,0}$ at 10.58 GeV
Experiment: CLEOII (CESR)
Inspire ID: 501417
Status: VALIDATED
Authors:References:- Phys.Rev.Lett. 83 (1999) 3390-3393
Beams: e+ e-
Beam energies: (5.3, 5.3) GeV
Run details:Spectrum for the average of $\Xi_c^{0}(2815)$ and $\Xi_c^{+}(2815)$ produced at 10.58 GeV measured by CLEOII.
Source code:
CLEOII_1999_I501417.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
62
63
64
| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/Beam.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief Xi_c1 spectra
class CLEOII_1999_I501417 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(CLEOII_1999_I501417);
/// @name Analysis methods
///@{
/// Book histograms and initialise projections before the run
void init() {
// projections
declare(Beam(), "Beams");
declare(UnstableParticles(), "UFS");
// book histos
book(_h_Xi_c,2,1,1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
static const int id0 = 14314, idp=14324;
// Get beams and average beam momentum
const ParticlePair& beams = apply<Beam>(event, "Beams").beams();
const double Emax = ( beams.first.p3().mod() + beams.second.p3().mod() ) / 2.0;
const double Pmax = sqrt(sqr(Emax)-sqr(2.815));
const UnstableParticles& ufs = apply<UnstableParticles>(event, "UFS");
for (const Particle& p : ufs.particles(Cuts::abspid==id0 or Cuts::abspid==idp)) {
double xp = p.momentum().p3().mod()/Pmax;
_h_Xi_c->fill(xp);
}
}
/// Normalise histograms etc., after the run
void finalize() {
normalize(_h_Xi_c);
}
///@}
/// @name Histograms
///@{
Histo1DPtr _h_Xi_c;
///@}
};
RIVET_DECLARE_PLUGIN(CLEOII_1999_I501417);
}
|