Forward production of charged pions with incident $π^{\pm}$ on nuclear targets measured at the CERN PS

Details Forward production of charged pions with incident $π^{\pm}$ on nuclear targets measured at the CERN PS Forward production of charged pions with incident $π^{\pm}$ on nuclear targets measured at the CERN PS

2009-02-12

arxiv.org/abs/0902.2105v1

Nucl.Phys.A821:118-192,2009

Physics

High Energy Physics

High Energy Physics - Experiment

to be published on Nuclear Physics A

Scientific paper

10.1016/j.nuclphysa.2009.01.080

Measurements of the double-differential $\pi^{\pm}$ production cross-section in the range of momentum $0.5 \GeVc \leq p \le 8.0 \GeVc$ and angle $0.025 \rad \leq \theta \le 0.25 \rad$ in interactions of charged pions on beryllium, carbon, aluminium, copper, tin, tantalum and lead are presented. These data represent the first experimental campaign to systematically measure forward pion hadroproduction. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN PS. Incident particles, impinging on a 5% nuclear interaction length target, were identified by an elaborate system of beam detectors. The tracking and identification of the produced particles was performed using the forward spectrometer of the HARP detector. Results are obtained for the double-differential cross-sections $ {{\mathrm{d}^2 \sigma}}/{{\mathrm{d}p\mathrm{d}\Omega}} $ mainly at four incident pion beam momenta (3 \GeVc, 5 \GeVc, 8 \GeVc and 12 \GeVc). The measurements are compared with the GEANT4 and MARS Monte Carlo simulation

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