prikaz prve stranice dokumenta Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV
  Download
PDF 934.96 KB
Scientific paper - Original scientific paper
Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV
Physics Letters B, 793 (2019); 420-432. https://doi.org/10.1016/j.physletb.2019.04.047
(ALICE Collaboration) Acharya, S.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Utrobičić, Antonija; ...; Vicković, Linda; ...; Zou, S. More authors...

Cite this document

Acharya, S., Antičić, T., Erhardt, F., Gotovac, S., Jerčić, M., Lončar, P. ... Zou, S. (2019). Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV. Physics Letters B, 793., 420-432. doi: 10.1016/j.physletb.2019.04.047

Acharya, S., et al. "Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV." Physics Letters B, vol. 793, 2019, pp. 420-432. https://doi.org/10.1016/j.physletb.2019.04.047

Acharya, S., Tome Antičić, Filip Erhardt, Sven Gotovac, Marko Jerčić, Petra Lončar, Eugen Mudnić, et al. "Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV." Physics Letters B 793 (2019): 420-432. https://doi.org/10.1016/j.physletb.2019.04.047

Acharya, S., et al. (2019) 'Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV', Physics Letters B, 793, pp. 420-432. doi: 10.1016/j.physletb.2019.04.047

Acharya S, Antičić T, Erhardt F, Gotovac S, Jerčić M, Lončar P, and sur.. Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV. Physics Letters B [Internet]. 2019 [cited 2024 November 15];793:420-432. doi: 10.1016/j.physletb.2019.04.047

S. Acharya, et al., "Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV", Physics Letters B, vol. 793, pp. 420-432, 2019. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:424535. [Accessed: 15 November 2024]

Please login to the repository to save this object to your list.
Metadata
Title (english)Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV
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
Author
...
AuthorLinda Vicković
MBZ: 242565
Author
...
AuthorS. Zou
CollaborationALICE Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
Charged-particle spectra at midrapidity are measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair √sNN=5.02 TeV and presented in centrality classes ranging from most central (0–5%) to most peripheral (95– 100%) collisions. Possible medium effects are quantified using the nuclear modification factor ( RAA ) by comparing the measured spectra with those from proton–proton collisions, scaled by the number of independent nucleon–nucleon collisions obtained from a Glauber model. At large transverse momenta (pT<8, 20>GeV/c), the average RAA is found to increase from about 0.15 in 0–5% central to a maximum value of about 0.8 in 75–85% peripheral collisions, beyond which it falls off strongly to below 0.2 for the most peripheral collisions. Furthermore, RAA initially exhibits a positive slope as a function of pT in the 8–20 GeV/c interval, while for collisions beyond the 80% class the slope is negative. To reduce uncertainties related to event selection and normalization, we also provide the ratio of RAA in adjacent centrality intervals. Our results in peripheral collisions are consistent with a PYTHIA- based model without nuclear modification, demonstrating that biases caused by the event selection and collision geometry can lead to the apparent suppression in peripheral collisions. This explains the unintuitive observation that RAA is below unity in peripheral Pb–Pb, but equal to unity in minimum-bias p–Pb collisions despite similar charged-particle multiplicities.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysics Letters B
Numberingvol. 793, pp. 420-432
p-ISSN0370-2693
DOIhttps://doi.org/10.1016/j.physletb.2019.04.047
URN:NBNurn:nbn:hr:217:424535
Publication2019
Document URLhttps://www.sciencedirect.com/science/article/pii/S0370269319302801
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2019 Conseil Européen pour la Recherche Nucléaire. 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 24 May 2018. Received in revised form 26 March 2019. Accepted 17 April 2019. Available online 23 April 2019.
Created on2020-08-24 17:26:38