Antiproton annihilation at rest in thin solid targets and comparison with Monte Carlo simulations

Autor(en)

C. Amsler, H. Breuker, M. Bumbar, M. Cerwenka, G. Costantini, R. Ferragut, M. Fleck, M. Giammarchi, A. Gligorova, G. Gosta, E. D. Hunter, C. Killian, B. Kolbinger, V. Kraxberger, N. Kuroda, M. Lackner, M. Leali, G. Maero, V. Mascagna, Y. Matsuda, S. Migliorati, D. J. Murtagh, A. Nanda, L. Nowak, S. Rheinfrank, M. Romé, M. C. Simon, M. Tajima, V. Toso, S. Ulmer, M. van Beuzekom, L. Venturelli, A. Weiser, E. Widmann, Y. Yamazaki, J. Zmeskal

Abstrakt

The mechanism of antiproton–nucleus annihilation at rest is not fully understood, despite substantial previous experimental and theoretical work. In this study we used slow extracted antiprotons from the ASACUSA apparatus at CERN to measure the charged particle multiplicities and their energy deposits from antiproton annihilations at rest on three different nuclei: carbon, molybdenum and gold. The results are compared with predictions from different models in the simulation tools Geant4 and FLUKA. A model that accounts for all the observed features is still missing, as well as measurements at low energies, to validate such models.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW), RIKEN, European Organization for Nuclear Research (CERN), Università degli Studi di Brescia, Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Pavia, Politecnico di Milano, Istituto Nazionale di Fisica Nucleare (INFN), Milano, University College London, Data Technology, University of Tokyo, Università degli Studi di Milano-Bicocca, Japan Synchrotron Radiation Research Institute, NIKHEF-Nationaal instituut voor subatomaire fysica

Journal

European Physical Journal A

Band

60

Anzahl der Seiten

18

ISSN

1434-6001

DOI

https://doi.org/10.1140/epja/s10050-024-01428-x

Publikationsdatum

11-2024

Peer-reviewed

Ja

ÖFOS 2012

103014 Kernphysik

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a4df48c6-6fe9-4666-9120-ba5c28609f13