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Prompt neutrino production from 400 GeV protons on tungsten targets

Thesis/Dissertation ·
OSTI ID:5410935
A sample of neutrino events found in a prompt neutrino experiment performed at Fermilab is analyzed. The experiment was designed to study neutrinos from the decay of massive or shortlived particles. A beam of 400 GeV protons was allowed to impinge on a thick tungsten target. The detector, a 52 metric ton fiducial mass lead-scintillator calorimeter located 56m downstream from the target, was set to trigger on no incoming tracks and either energy deposition or an outgoing muon. Data runs were taken with a full density and a 1/3 density tungsten target. The prompt flux is found by extrapolation to infinite target density and by subtraction of calculated backgrounds. The total event sample is divided into two parts; a 1-Mu (single muon events) sample and a 0-Mu (muonless events) sample. Then, a charged current muon and charged current electron neutrino sample are derived. The energy and transverse momentum distributions of prompt neutrino events are presented. By attributing the flux of these prompt events to D anti D production, and assuming a production model a fit to the best model and a total production cross section are obtained. In addition, limits are set on the diffractive production of charm.
Research Organization:
Michigan Univ., Ann Arbor (USA)
OSTI ID:
5410935
Country of Publication:
United States
Language:
English