prikaz prve stranice dokumenta Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV
  Download
PDF 930.46 KB
Scientific paper - Letter
Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV
Physics Letters B, 829 (2022); 137065. https://doi.org/10.1016/j.physletb.2022.137065
(ALICE Collaboration) Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N. More authors...

Institutional repository: Repository of the Faculty of Science

Cite this document

Acharya, S., Erhardt, F., Gotovac, S., Jerčić, M., Karatović, D., Lončar, P. ... Zurlo, N. (2022). Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV. Physics Letters B, 829.. doi: 10.1016/j.physletb.2022.137065

Acharya, S., et al. "Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV." Physics Letters B, vol. 829, 2022. https://doi.org/10.1016/j.physletb.2022.137065

Acharya, S., Filip Erhardt, Sven Gotovac, Marko Jerčić, David Karatović, Petra Lončar, Eugen Mudnić, et al. "Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV." Physics Letters B 829 (2022). https://doi.org/10.1016/j.physletb.2022.137065

Acharya, S., et al. (2022) 'Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV', Physics Letters B, 829. doi: 10.1016/j.physletb.2022.137065

Acharya S, Erhardt F, Gotovac S, Jerčić M, Karatović D, Lončar P, and sur.. Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV. Physics Letters B [Internet]. 2022 [cited 2024 November 23];829. doi: 10.1016/j.physletb.2022.137065

S. Acharya, et al., "Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV", Physics Letters B, vol. 829, 2022. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:435109. [Accessed: 23 November 2024]

Metadata
Title (english)Observation of a multiplicity dependence in the pT-differential charm baryon-to-meson ratios in proton-proton collisions at √s = 13 TeV
AuthorS. Acharya
Author
...
AuthorFilip Erhardt
Author
...
AuthorSven Gotovac
Author
...
AuthorMarko Jerčić
Author
...
AuthorDavid Karatović
Author
...
AuthorPetra Lončar
Author
...
AuthorEugen Mudnić
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 production of prompt D0, Ds+, and Λc+ hadrons, and their ratios, Ds+/D0 and Λc+/D0, are measured in proton–proton collisions at √s = 13 TeV at midrapidity (|y| < 0.5) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum (pT) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange Ds+/D0 ratio indicates no significant multiplicity dependence, the baryon-to-meson pT- differential Λc+/D0 ratio shows a multiplicity- dependent enhancement, with a significance of 5.3σ for 1 < pT < 12 GeV/c, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The Λc+/D0 ratios as a function of pT present a similar shape and magnitude as the Λ/K0s ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The pT-integrated ratios, extrapolated down to pT = 0, do not show a significant dependence on multiplicity within the uncertainties.
Keywords (english)
Languageenglish
Publication typeScientific paper - Letter
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysics Letters B
Numberingvol. 829, 137065
p-ISSN0370-2693
DOIhttps://doi.org/10.1016/j.physletb.2022.137065
URN:NBNurn:nbn:hr:217:435109
Publication2022
Document URLhttps://linkinghub.elsevier.com/retrieve/pii/S037026932200199X
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2022 European Organization for Nuclear Research. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 16 December 2021. Received in revised form 21 February 2022. Accepted 17 March 2022. Available online 4 April 2022. Published 10 June 2022.
Created on2024-09-10 20:37:27