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Article
Report number arXiv:2109.13026 ; CERN-EP-2021-194
Title Production of light (anti)nuclei in pp collisions at s = 13 TeV
Author(s) ALICE Collaboration  Zeige alle 1037 Autoren
Corporate author(s) The ALICE collaboration
Publication 2022-01-20
Imprint 21 Sep 2021
Number of pages 26
Note 26 pages, 7 captioned figures, 2 tables, authors from page 21, published version, figures at http://alice-publications.web.cern.ch/node/7377
Published in: JHEP 2201 (2022) 106
DOI 10.1007/JHEP01(2022)106
Subject category Nuclear Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ALICE
Keywords particle and resonance production ; particle identification ; experimental results ; hadronisation
Abstract Understanding the production mechanism of light (anti)nuclei is one of the key challenges of nuclear physics and has important consequences for astrophysics, since it provides an input for indirect dark- matter searches in space. In this paper, the latest results about the production of light (anti)nuclei in pp collisions at sqrts = 13 TeV are presented, focusing on the comparison with the predictions of coalescence and thermal models. For the first time, the coalescence parameters B2 for deuterons and B3 for helions are compared with parameter-free theoretical predictions that are directly constrained by the femtoscopic measurement of the source radius in the same event class. A fair description of the data with a Gaussian wave function is observed for both deuteron and helion, supporting the coalescence mechanism for the production of light (anti)nuclei in pp collisions. This method paves the way for future investigations of the internal structure of more complex nuclear clusters, including the hypertriton.
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Copyright/License preprint: © 2021-2024 CERN (License: CC-BY-4.0)
publication: © 2022-2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³
Submitted by yvonne.chiara.pachmayer@cern.ch



 


 Datensatz erzeugt am 2021-09-21, letzte Änderung am 2024-11-27


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