Abstract:This paper presents the measurement of the scattering of 172 MeV/c muons in assorted materials, including liquid hydrogen, motivated by the need to understand ionisation cooling for muon acceleration.Data are compared with predictions from the GEANT 4 simulation code and this simulation is used to deconvolute detector effects. The scattering distributions obtained are compared with the Moliere theory of multiple scattering and, in the case of liquid hydrogen, with ELMS. With the exception of ELMS, none of the … Show more
“…The G4CoulombScattering process is an alternative to the MSC process. The results for the different MSC models and this process are shown in figure 2, where Geant4 9.0 simulation predictions are compared with the data [14] of the MuScat experiment (172 MeV/c muons scattering at thin foils). All results for the central part of scattering (θ < 0.03) are in agreement with the data, for the tail the option skin = 2 seems to be the most accurate, however, other predictions agree with the data within two standard deviations.…”
Section: A New Single Coulomb Elastic Scattering Processmentioning
confidence: 99%
“…Recently the testing suite has been upgraded and extended, new data [14,[17][18][19][20] are utilized. The software is added to run in automatic production mode for part of tests, which migrated from PAW analysis to ROOT.…”
Section: The Evolution Of the Testing Suitementioning
“…The grid is extracted from a detailed geant geometry which incorporates the silicon sensors, support and readout structures, the beampipe and the drift chamber's internal construction. During the particle propagation, the Landau-distributed ionization energy loss, bremsstrahlung (including detailed estimation of the Landau-Pomeranchuk-Migdal 34 suppression of soft photon bremsstrahlung), Compton scattering and e + e − conversion of photons, as well as multiple scattering [35][36][37] are simulated. Hits are deposited on the drift chamber wires according to measured efficiencies and resolutions, and used to fit tracks in the same manner as the collider data.…”
Section: Lepton Momentum and Energy Calibrationmentioning
The measurement of the W boson mass has been growing in importance as its precision has improved, along with the precision of other electroweak observables and the top quark mass. Over the last decade, the measurement of the W boson mass has been led at hadron colliders. Combined with the precise measurement of the top quark mass at hadron colliders, the W boson mass helped to pin down the mass of the Standard Model Higgs boson through its induced radiative correction on the W boson mass. With the discovery of the Higgs boson and the measurement of its mass, the electroweak sector of the Standard Model is over-constrained. Increasing the precision of the W boson mass probes new physics at the TeV-scale. We summarize an extensive Tevatron (1984Tevatron ( -2011 program to measure the W boson mass at the CDF and DØ experiments. We highlight the recent Tevatron measurements and prospects for the final Tevatron measurements.
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