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

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 deposi...

Full description

Saved in:

Bibliographic Details
Main Authors:	Amsler, Claude, Breuker, Horst, Bumbar, Marcus, Cerwenka, Matti, Costantini, Giovanni, Ferragut, Rafael, Fleck, Markus, Giammarchi, Marco, Gligorova, Angela, Gosta, Giulia, Hunter, Eric David, Killian, Carina, Kolbinger, Bernadette, Kraxberger, Viktoria, Kuroda, Naofumi, Lackner, Moritz, Leali, Marco, Maero, Giancarlo, Mascagna, Valerio, Matsuda, Yasuyuki, Migliorati, Stefano, Murtagh, Daniel James, Nanda, Amit, Nowak, Lilian, Rheinfrank, Simon, Romé, Massimiliano, Simon, Martin C, Tajima, Minori, Toso, Valerio, Ulmer, Stefan, van Beuzekom, Martin, Venturelli, Luca, Weiser, Alina, Widmann, Eberhard, Yamazaki, Yasunori, Zmeskal, Johann
Format:	Journal Article
Language:	English
Published:	09-07-2024
Subjects:	Physics - Nuclear Experiment
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	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.
DOI:	10.48550/arxiv.2407.06721