prikaz prve stranice dokumenta Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC
  Download
PDF 1.39 MB
Scientific paper - Letter
Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC
Physics Letters B, 856 (2024); 138915. https://doi.org/10.1016/j.physletb.2024.138915
(ALICE Collaboration) Acharya, S.; ...; Gotovac, Sven; ...; Karatović, David; ...; Kovačić, N.; ...; Lončar, Petra; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N. More authors...

Institutional repository: Repository of the Faculty of Science

Cite this document

Acharya, S., Gotovac, S., Karatović, D., Kovačić, N., Lončar, P., Planinić, M. ... Zurlo, N. (2024). Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC. Physics Letters B, 856.. doi: 10.1016/j.physletb.2024.138915

Acharya, S., et al. "Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC." Physics Letters B, vol. 856, 2024. https://doi.org/10.1016/j.physletb.2024.138915

Acharya, S., Sven Gotovac, David Karatović, N. Kovačić, Petra Lončar, Mirko Planinić, Nikola Poljak, Linda Vicković and N. Zurlo. "Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC." Physics Letters B 856 (2024). https://doi.org/10.1016/j.physletb.2024.138915

Acharya, S., et al. (2024) 'Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC', Physics Letters B, 856. doi: 10.1016/j.physletb.2024.138915

Acharya S, Gotovac S, Karatović D, Kovačić N, Lončar P, Planinić M, and sur.. Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC. Physics Letters B [Internet]. 2024 September [cited 2024 December 28];856. doi: 10.1016/j.physletb.2024.138915

S. Acharya, et al., "Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC", Physics Letters B, vol. 856, September 2024. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:172942. [Accessed: 28 December 2024]

Metadata
Title (english)Investigating the composition of the K⁎0⁎(700) state with π±KS0 correlations at the LHC
AuthorS. Acharya
Author
...
AuthorSven Gotovac
Author
...
AuthorDavid Karatović
Author
...
AuthorN. Kovačić
Author
...
AuthorPetra Lončar
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorLinda Vicković
Author
...
AuthorN. Zurlo
CollaborationALICE Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The first measurements of femtoscopic correlations with the particle pair combinations 𝜋±K0 S in pp collisions at √𝑠 = 13 TeV at the Large Hadron Collider (LHC) are reported by the ALICE experiment. Using the femtoscopic approach, it is shown that it is possible to study the elusive K∗ 0(700) particle that has been considered a tetraquark candidate for over forty years. Source and final-state interaction parameters are extracted by fitting a model assuming a Gaussian source to the experimentally measured two-particle correlation functions. The final-state interaction in the 𝜋±K0 S system is modeled through a resonant scattering amplitude, defined in terms of a mass and a coupling parameter, The extracted mass and Breit–Wigner width, derived from the coupling parameter, of the final-state interaction are found to be consistent with previous measurements of the K∗ 0(700). The small value and increase of the correlation strength with increasing source size support the hypothesis that the K∗ 0(700) is a four-quark state, i.e. a tetraquark state of the form (q1, q2, q3, q3) in which q1, q2 and q3 indicate the flavor of the valence quarks of the 𝜋 and K0 S. This latter trend is also confirmed via a simple geometric model that assumes a tetraquark structure of the K∗ 0(700) resonance.
Keywords (english)
Languageenglish
Publication typeScientific paper - Letter
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysics Letters B
Numberingvol. 856, 138915
p-ISSN0370-2693
DOIhttps://doi.org/10.1016/j.physletb.2024.138915
URN:NBNurn:nbn:hr:217:172942
Publication2024-09
Document URLhttps://linkinghub.elsevier.com/retrieve/pii/S0370269324004738
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2024 The Author(s). Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Received 6 January 2024, Revised 21 June 2024, Accepted 25 July 2024, Available online 30 July 2024, Version of Record 7 August 2024.
Created on2024-08-20 09:49:54