Extending the ALICE strong-interaction studies to nuclei: measurement of proton-deuteron correlations in pp collisions at √s = 13 TeV
(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
- author collaboration
- organization
- publishing date
- 2022
- 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}}, }