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Extending the ALICE strong-interaction studies to nuclei: measurement of proton-deuteron correlations in pp collisions at √s = 13 TeV

Acharya, S. ; Basu, S. LU orcid ; Christiansen, P. LU ; Matonoha, O. LU ; Nassirpour, A.F. LU orcid ; Ohlson, A. LU ; Oskarsson, A. LU ; Richert, T. LU ; Rueda, O.V. LU and Silvermyr, D. LU orcid , et al. (2022) The European Physical Society Conference on High Energy Physics In Proceedings of Science 398.
Abstract
The large data sample of high-multiplicity pp collisions collected by ALICE allows for the precise measurement of the size of source producing primary hadrons, opening the doors to a study of the interaction of different hadron species using femtoscopy techniques. The momentum correlation between (anti)protons and (anti)deuterons measured in pp collisions at √s = 13 TeV with ALICE is studied here for the first time. The measured correlation function for ((equation presented))p-((equation presented))d pairs is compared with theoretical predictions obtained considering Coulomb and Coulomb plus strong interactions and employing the Lednický-Lyuboshitz model with scattering parameters extracted from traditional scattering experiments for the... (More)
The large data sample of high-multiplicity pp collisions collected by ALICE allows for the precise measurement of the size of source producing primary hadrons, opening the doors to a study of the interaction of different hadron species using femtoscopy techniques. The momentum correlation between (anti)protons and (anti)deuterons measured in pp collisions at √s = 13 TeV with ALICE is studied here for the first time. The measured correlation function for ((equation presented))p-((equation presented))d pairs is compared with theoretical predictions obtained considering Coulomb and Coulomb plus strong interactions and employing the Lednický-Lyuboshitz model with scattering parameters extracted from traditional scattering experiments for the p-d system. The measured correlation function can not be reproduced by any of the obtained predictions. This deviation can to large extent be interpreted as a demonstration of the late formation time of (anti)deuterons in hadron-hadron collisions. This observation is key for the understanding of the production mechanism of light (anti)nuclei, which is an open issue in high-energy physics and has also important consequences for the study of antinuclei formation in the interstellar medium either from collisions triggered by high-energy cosmic rays or by dark matter decays. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0) (Less)
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author collaboration
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Cosmology, Hadrons, Tellurium compounds, Anti-protons, Correlation function, Data sample, High multiplicity, Interaction studies, Large data, Measurements of, Momentum correlation, Precise measurements, Strong interaction, Deuterium
host publication
The European Physical Society Conference on High Energy Physics
series title
Proceedings of Science
volume
398
article number
391
publisher
Sissa Medialab srl
conference name
The European Physical Society Conference on High Energy Physics
conference dates
2021-07-26 - 2021-07-30
external identifiers
  • scopus:85130725141
ISSN
1824-8039
DOI
10.22323/1.398.0391
language
English
LU publication?
yes
id
1c1ce67e-9284-4ef6-9c5c-cfc10670ba9c
date added to LUP
2022-09-14 12:15:44
date last changed
2023-10-31 14:58:39
@inproceedings{1c1ce67e-9284-4ef6-9c5c-cfc10670ba9c,
  abstract     = {{The large data sample of high-multiplicity pp collisions collected by ALICE allows for the precise measurement of the size of source producing primary hadrons, opening the doors to a study of the interaction of different hadron species using femtoscopy techniques. The momentum correlation between (anti)protons and (anti)deuterons measured in pp collisions at √s = 13 TeV with ALICE is studied here for the first time. The measured correlation function for ((equation presented))p-((equation presented))d pairs is compared with theoretical predictions obtained considering Coulomb and Coulomb plus strong interactions and employing the Lednický-Lyuboshitz model with scattering parameters extracted from traditional scattering experiments for the p-d system. The measured correlation function can not be reproduced by any of the obtained predictions. This deviation can to large extent be interpreted as a demonstration of the late formation time of (anti)deuterons in hadron-hadron collisions. This observation is key for the understanding of the production mechanism of light (anti)nuclei, which is an open issue in high-energy physics and has also important consequences for the study of antinuclei formation in the interstellar medium either from collisions triggered by high-energy cosmic rays or by dark matter decays. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)}},
  author       = {{Acharya, S. and Basu, S. and Christiansen, P. and Matonoha, O. and Nassirpour, A.F. and Ohlson, A. and Oskarsson, A. and Richert, T. and Rueda, O.V. and Silvermyr, D. and Zurlo, N.}},
  booktitle    = {{The European Physical Society Conference on High Energy Physics}},
  issn         = {{1824-8039}},
  keywords     = {{Cosmology; Hadrons; Tellurium compounds; Anti-protons; Correlation function; Data sample; High multiplicity; Interaction studies; Large data; Measurements of; Momentum correlation; Precise measurements; Strong interaction; Deuterium}},
  language     = {{eng}},
  publisher    = {{Sissa Medialab srl}},
  series       = {{Proceedings of Science}},
  title        = {{Extending the ALICE strong-interaction studies to nuclei: measurement of proton-deuteron correlations in pp collisions at √s = 13 TeV}},
  url          = {{http://dx.doi.org/10.22323/1.398.0391}},
  doi          = {{10.22323/1.398.0391}},
  volume       = {{398}},
  year         = {{2022}},
}