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Scientific paper - Original scientific paper
Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV
Physical Review Letters, 113 (2014), 23; 232504. https://doi.org/10.1103/PhysRevLett.113.232504
(ALICE Collaboration) Abelev, B.; ...; Antičić, Tome; ...; Gotovac, Sven; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Simatović, Goran; ...; Šuša, Tatjana; ...; Vicković, Linda; ...; Zyzak, M. More authors...

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Abelev, B., Antičić, T., Gotovac, S., Mudnić, E., Planinić, M., Poljak, N. ... Zyzak, M. (2014). Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV. Physical Review Letters, 113. (23). doi: 10.1103/PhysRevLett.113.232504

Abelev, B., et al. "Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV." Physical Review Letters, vol. 113, no. 23, 2014. https://doi.org/10.1103/PhysRevLett.113.232504

Abelev, B., Tome Antičić, Sven Gotovac, Eugen Mudnić, Mirko Planinić, Nikola Poljak, Goran Simatović, Tatjana Šuša, Linda Vicković and M. Zyzak. "Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV." Physical Review Letters 113, no. 23 (2014). https://doi.org/10.1103/PhysRevLett.113.232504

Abelev, B., et al. (2014) 'Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV', Physical Review Letters, 113(23). doi: 10.1103/PhysRevLett.113.232504

Abelev B, Antičić T, Gotovac S, Mudnić E, Planinić M, Poljak N, and sur.. Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV. Physical Review Letters [Internet]. 2014 [cited 2024 December 28];113(23). doi: 10.1103/PhysRevLett.113.232504

B. Abelev, et al., "Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV", Physical Review Letters, vol. 113, no. 23, 2014. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:887648. [Accessed: 28 December 2024]

Metadata
Title (english)Exclusive J/ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions √sNN = 5.02 TeV
AuthorB. Abelev
Author
...
AuthorTome Antičić
Author
...
AuthorSven Gotovac
Author
...
AuthorEugen Mudnić
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorGoran Simatović
Author
...
AuthorTatjana Šuša
Author
...
AuthorLinda Vicković
Author
...
AuthorM. Zyzak
CollaborationALICE Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We present the first measurement at the LHC of exclusive J/ψ photoproduction off protons, in ultraperipheral proton-lead collisions at √sNN = 5.02 TeV. Events are selected with a dimuon pair produced either in the rapidity interval, in the laboratory frame, 2.5 <y< 4 (p-Pb) or −3.6 <y< −2.6 (Pb-p), and no other particles observed in the ALICE acceptance. The measured cross sections σ(γ + p → J/ψ + p) are 33.2 ± 2.2 (stat) ± 3.2 (syst) ± 0.7 (theor) nb in p-Pb and 284 ± 36 (stat) ± 27 32 (syst) 26 (theor) nb in Pb-p collisions. We measure this process up to about 700 GeV in the γp center of mass, which is a factor of two larger than the highest energy studied at HERA. The data are consistent with a power law dependence of the J/ψ photoproduction cross section in γp energies from about 20 to 700 GeV, or equivalently, from Bjorken x scaling variable between ~2 × 10^−2 and ~2 × 10^−5, thus indicating no significant change in the gluon density behavior of the proton between HERA and LHC energies.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 113, no. 23, 232504
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/PhysRevLett.113.232504
URN:NBNurn:nbn:hr:217:887648
Publication2014
Document URLhttp://link.aps.org/doi/10.1103/PhysRevLett.113.232504
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 3.0 Unported (CC BY 3.0) icon
Public note© 2014 CERN, for the The ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI. Received 1 July 2014; published 5 December 2014.
Created on2019-12-29 17:39:21