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Scientific paper - Original scientific paper
First Observation of an Attractive Interaction between a Proton and a Cascade Baryon
Physical Review Letters, 123 (2019), 11; 112002. https://doi.org/10.1103/physrevlett.123.112002
(A Large Ion Collider Experiment Collaboration) Acharya, S.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Utrobičić, Antonija; ...; Vicković, Linda; ...; Zurlo, N. More authors...

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Acharya, S., Antičić, T., Erhardt, F., Gotovac, S., Jerčić, M., Lončar, P. ... Zurlo, N. (2019). First Observation of an Attractive Interaction between a Proton and a Cascade Baryon. Physical Review Letters, 123. (11). doi: 10.1103/physrevlett.123.112002

Acharya, S., et al. "First Observation of an Attractive Interaction between a Proton and a Cascade Baryon." Physical Review Letters, vol. 123, no. 11, 2019. https://doi.org/10.1103/physrevlett.123.112002

Acharya, S., Tome Antičić, Filip Erhardt, Sven Gotovac, Marko Jerčić, Petra Lončar, Eugen Mudnić, et al. "First Observation of an Attractive Interaction between a Proton and a Cascade Baryon." Physical Review Letters 123, no. 11 (2019). https://doi.org/10.1103/physrevlett.123.112002

Acharya, S., et al. (2019) 'First Observation of an Attractive Interaction between a Proton and a Cascade Baryon', Physical Review Letters, 123(11). doi: 10.1103/physrevlett.123.112002

Acharya S, Antičić T, Erhardt F, Gotovac S, Jerčić M, Lončar P, and sur.. First Observation of an Attractive Interaction between a Proton and a Cascade Baryon. Physical Review Letters [Internet]. 2019 [cited 2025 April 03];123(11). doi: 10.1103/physrevlett.123.112002

S. Acharya, et al., "First Observation of an Attractive Interaction between a Proton and a Cascade Baryon", Physical Review Letters, vol. 123, no. 11, 2019. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:189266. [Accessed: 03 April 2025]

Metadata
Title (english)First Observation of an Attractive Interaction between a Proton and a Cascade Baryon
AuthorS. Acharya
Author
...
AuthorTome Antičić
MBZ: 218816
Author
...
AuthorFilip Erhardt
MBZ: 345132
Author
...
AuthorSven Gotovac
MBZ: 108173
Author
...
AuthorMarko Jerčić
MBZ: 358125
Author
...
AuthorPetra Lončar
MBZ: 350591
Author
...
AuthorEugen Mudnić
MBZ: 248856
Author
...
AuthorMirko Planinić
MBZ: 213776
Author
...
AuthorNikola Poljak
MBZ: 283732
Author
...
AuthorAntonija Utrobičić
MBZ: 342963
Author
...
AuthorLinda Vicković
MBZ: 242565
Author
...
AuthorN. Zurlo
CollaborationA Large Ion Collider Experiment Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
This Letter presents the first experimental observation of the attractive strong interaction between a proton and a multistrange baryon (hyperon) Ξ-. The result is extracted from two-particle correlations of combined p-Ξ- ⊕p¯-Ξ¯+ pairs measured in p-Pb collisions at √sNN=5.02 TeV at the LHC with ALICE. The measured correlation function is compared with the prediction obtained assuming only an attractive Coulomb interaction and a standard deviation in the range [3.6, 5.3] is found. Since the... More measured p-Ξ-⊕p¯-Ξ¯+ correlation is significantly enhanced with respect to the Coulomb prediction, the presence of an additional, strong, attractive interaction is evident. The data are compatible with recent lattice calculations by the HAL-QCD Collaboration, with a standard deviation in the range [1.8, 3.7]. The lattice potential predicts a shallow repulsive Ξ- interaction within pure neutron matter and this implies stiffer equations of state for neutron-rich matter including hyperons. Implications of the strong interaction for the modeling of neutron stars are discussed. Less
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 123, no. 11, 112002
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/physrevlett.123.112002
URN:NBNurn:nbn:hr:217:189266
Publication2019
Document URLhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.112002
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2019 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 3 May 2019. Revised 28 June 2019. Published 13 September 2019.
Created on2020-08-24 12:58:01
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