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Rivet analyses reference

TOTEM_2012_I1220862

Measurement of proton-proton elastic scattering and total cross section at $\sqrt{s} = 7\;\text{TeV}$
Experiment: TOTEM (LHC)
Inspire ID: 1220862
Status: VALIDATED
Authors:
• Sercan Sen
• Peter Skands
References:
• CERN-PH-EP-2012-239
• http://cds.cern.ch/record/1472948
Beams: p+ p+
Beam energies: (3500.0, 3500.0) GeV
Run details:
• Elastic events only.

Measurement of the elastic differential cross-section in proton-proton interactions at a centre-of-mass energy $\sqrt{s} = 7\;\text{TeV}$ at the LHC. The data, which cover the $|t|$ range $0.005-0.2\;\text{GeV}^2$, were collected using Roman Pot detectors very close to the outgoing beam in October 2011, allowing the precise extrapolation down to the optical point, $t = 0$, and hence the derivation of the elastic as well as the total cross-section via the optical theorem.

Source code: TOTEM_2012_I1220862.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 // -*- C++ -*- #include "Rivet/Analysis.hh" #include "Rivet/Projections/ChargedFinalState.hh" namespace Rivet { /// TOTEM elastic and total cross-section measurement class TOTEM_2012_I1220862 : public Analysis { public: TOTEM_2012_I1220862() : Analysis("TOTEM_2012_I1220862") { } void init() { declare(ChargedFinalState(), "CFS"); book(_hist_tlow ,1, 1, 1); book(_hist_thigh ,2, 1, 1); book(_hist_sigma ,3, 1, 1); } void analyze(const Event& event) { const ChargedFinalState& cfs = apply(event, "CFS"); if (cfs.size() > 2) MSG_WARNING("Final state includes more than two charged particles!"); _hist_sigma->fill(sqrtS()/GeV); for (const Particle& p : cfs.particles(Cuts::eta > 0)) { // && Cuts::pid == PID::PROTON)) { if (p.pid() != PID::PROTON) continue; const double t = sqr(p.pT()); _hist_tlow->fill(t); _hist_thigh->fill(t); } } void finalize() { normalize(_hist_tlow, crossSection()/millibarn); normalize(_hist_thigh, crossSection()/millibarn); normalize(_hist_sigma, crossSection()/millibarn); } private: Histo1DPtr _hist_tlow, _hist_thigh, _hist_sigma; }; DECLARE_ALIASED_RIVET_PLUGIN(TOTEM_2012_I1220862, TOTEM_2012_002); }