PoS - Proceedings of Science
Volume 385 - 10th International Workshop on Charm Physics (CHARM2020) - Parallel programme
Towards a measurement of charm production induced by 400 GeV/c protons on a thick target at CERN SPS
N. Owtscharenko
Full text: pdf
Pre-published on: September 13, 2021
Published on: November 10, 2021
The SHiP collaboration proposes a general purpose fixed-target experiment to search for hidden particles at the new beam-dump facility at CERN SPS. For the interpretation of these searches a precise knowledge of the differential charm production cross-section in a thick target, including the cascade production, is essential. For this purpose, a dedicated measurement at CERN SPS has been proposed. An optimization run has been performed with 400 GeV/c protons interacting with a thick target of up to 1.6 nuclear interaction lengths. The production and decay of charmed hadrons in the target is detected by emulsion films arranged in a moving brick containing emulsion cloud chambers. A magnetic spectrometer using silicon pixel, scintillating fiber and drift-tube detectors is built to measure charge and momentum of the decay daughters and is followed by an RPC muon tagger. We report on the experiment design, track matching and first results of the optimization run.
DOI: https://doi.org/10.22323/1.385.0061
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