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arXiv · 2510.00825

P371 Experiment at CERN -- quest for polarized antiprotons

M. Zielinski·D. Grzonka·G. Khatri·P. Kulessa·J. Ritman·T. Sefzick·J. Smyrski·V. Verhoeven·H. Xu
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Abstract

Polarization effects in the production of antiprotons at the CERN PS beam line T11 at 3.5 GeV/c have been investigated within the P371 experiment. These effects, if found to be significant could provide a simple method to generate polarized antiproton beams with existing facilities. First precursor measurements were carried out by the P349 collaboration, though the available statistics were insufficient for a quantitative conclusion. With an upgraded detector setup and extended beam time, the experiment aims at determining whether a measurable degree of antiproton polarization exists.

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M. Zielinski, D. Grzonka, G. Khatri, P. Kulessa, J. Ritman, T. Sefzick, J. Smyrski, V. Verhoeven, H. Xu. 2025-10-01. P371 Experiment at CERN -- quest for polarized antiprotons. https://arxiv.org/abs/2510.00825

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