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Exploring the Strong Interaction of Three-Body Systems at the LHC

Acharya, S. ; Basu, S. LU orcid ; Christiansen, P. LU ; Hansen, J. LU orcid ; Iversen, K.E. LU orcid ; Matonoha, O. LU ; Nepeivoda, R. LU orcid ; Ohlson, A. LU ; Silvermyr, D. LU orcid and Staa, J. LU , et al. (2024) In Physical Review X 14(3).
Abstract
Deuterons are atomic nuclei composed of a neutron and a proton held together by the strong interaction. Unbound ensembles composed of a deuteron and a third nucleon have been investigated in the past using scattering experiments, and they constitute a fundamental reference in nuclear physics to constrain nuclear interactions and the properties of nuclei. In this work, K+-d and p-d femtoscopic correlations measured by the ALICE Collaboration in proton-proton (pp) collisions at √s ¼ 13 TeV at the Large Hadron Collider ffiffi (LHC) are presented. It is demonstrated that correlations in momentum space between deuterons and kaons or protons allow us to study three-hadron systems at distances comparable with the proton radius. The analysis of... (More)
Deuterons are atomic nuclei composed of a neutron and a proton held together by the strong interaction. Unbound ensembles composed of a deuteron and a third nucleon have been investigated in the past using scattering experiments, and they constitute a fundamental reference in nuclear physics to constrain nuclear interactions and the properties of nuclei. In this work, K+-d and p-d femtoscopic correlations measured by the ALICE Collaboration in proton-proton (pp) collisions at √s ¼ 13 TeV at the Large Hadron Collider ffiffi (LHC) are presented. It is demonstrated that correlations in momentum space between deuterons and kaons or protons allow us to study three-hadron systems at distances comparable with the proton radius. The analysis of the K+-d correlation shows that the relative distances at which deuterons and protons or kaons are produced are around 2 fm. The analysis of the p-d correlation shows that only a full three-body calculation that accounts for the internal structure of the deuteron can explain the data. In particular, the sensitivity of the observable to the short-range part of the interaction is demonstrated. These results indicate that correlations involving light nuclei in pp collisions at the LHC will also provide access to any three-body system in the strange and charm sectors. © 2024 American Physical Society. All rights reserved. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
keywords
Atoms, Colliding beam accelerators, Photons, Protons, Atomic nucleus, Large Hadron Collider, Large-hadron colliders, Momentum spaces, Nuclear interaction, Property, Proton proton collisions, Space between, Strong interaction, Three-body systems, Hadrons
in
Physical Review X
volume
14
issue
3
article number
031051
publisher
American Physical Society
external identifiers
  • scopus:85205775917
ISSN
2160-3308
DOI
10.1103/PhysRevX.14.031051
language
English
LU publication?
yes
id
dbed1f25-4091-449a-9622-d90c80ec398d
date added to LUP
2025-08-28 11:04:05
date last changed
2025-08-28 11:04:17
@article{dbed1f25-4091-449a-9622-d90c80ec398d,
  abstract     = {{Deuterons are atomic nuclei composed of a neutron and a proton held together by the strong interaction. Unbound ensembles composed of a deuteron and a third nucleon have been investigated in the past using scattering experiments, and they constitute a fundamental reference in nuclear physics to constrain nuclear interactions and the properties of nuclei. In this work, K+-d and p-d femtoscopic correlations measured by the ALICE Collaboration in proton-proton (pp) collisions at √s ¼ 13 TeV at the Large Hadron Collider ffiffi (LHC) are presented. It is demonstrated that correlations in momentum space between deuterons and kaons or protons allow us to study three-hadron systems at distances comparable with the proton radius. The analysis of the K+-d correlation shows that the relative distances at which deuterons and protons or kaons are produced are around 2 fm. The analysis of the p-d correlation shows that only a full three-body calculation that accounts for the internal structure of the deuteron can explain the data. In particular, the sensitivity of the observable to the short-range part of the interaction is demonstrated. These results indicate that correlations involving light nuclei in pp collisions at the LHC will also provide access to any three-body system in the strange and charm sectors. © 2024 American Physical Society. All rights reserved.}},
  author       = {{Acharya, S. and Basu, S. and Christiansen, P. and Hansen, J. and Iversen, K.E. and Matonoha, O. and Nepeivoda, R. and Ohlson, A. and Silvermyr, D. and Staa, J. and Vislavicius, V. and Zurlo, N.}},
  issn         = {{2160-3308}},
  keywords     = {{Atoms; Colliding beam accelerators; Photons; Protons; Atomic nucleus; Large Hadron Collider; Large-hadron colliders; Momentum spaces; Nuclear interaction; Property; Proton proton collisions; Space between; Strong interaction; Three-body systems; Hadrons}},
  language     = {{eng}},
  number       = {{3}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review X}},
  title        = {{Exploring the Strong Interaction of Three-Body Systems at the LHC}},
  url          = {{http://dx.doi.org/10.1103/PhysRevX.14.031051}},
  doi          = {{10.1103/PhysRevX.14.031051}},
  volume       = {{14}},
  year         = {{2024}},
}