dc.contributor.author | Abelev, Betty | eng |
dc.contributor.author | Adam, Jaroslav | eng |
dc.contributor.author | Adamová, Dagmar | eng |
dc.contributor.author | Aggarwal, Madan M. | eng |
dc.contributor.author | Aglieri Rinella, Gianluca | eng |
dc.contributor.author | Agnello, Michelangelo | eng |
dc.contributor.author | Agostinelli, Andrea | eng |
dc.contributor.author | Agrawal, Nikita | eng |
dc.contributor.author | Ahmad, Nazeer | eng |
dc.contributor.author | Ahn, Sang Un | eng |
dc.contributor.author | Alme, Johan | eng |
dc.contributor.author | Erdal, Hege Austrheim | eng |
dc.contributor.author | Helstrup, Håvard | eng |
dc.contributor.author | Hetland, Kristin Fanebust | eng |
dc.contributor.author | Kileng, Bjarte | eng |
dc.contributor.author | Altinpinar, Sedat | eng |
dc.contributor.author | Djuvsland, Øystein | eng |
dc.contributor.author | Fehlker, Dominik | eng |
dc.contributor.author | Haaland, Øystein Senneset | eng |
dc.contributor.author | Huang, Meidana | eng |
dc.contributor.author | Lønne, Per-Ivar | eng |
dc.contributor.author | Nystrand, Joakim | eng |
dc.contributor.author | Rehman, Attiq ur | eng |
dc.contributor.author | Røhrich, Dieter | eng |
dc.contributor.author | Skjerdal, Kyrre | eng |
dc.contributor.author | Ullaland, Kjetil | eng |
dc.contributor.author | Velure, Arild | eng |
dc.contributor.author | Wagner, Boris | eng |
dc.contributor.author | Yang, Shiming | eng |
dc.contributor.author | Zhou, Zhuo | eng |
dc.contributor.author | Arsene, Ionut Christian | eng |
dc.contributor.author | Bätzing, Paul Christoph | eng |
dc.contributor.author | Dordic, Olja | eng |
dc.contributor.author | Lindal, Svein | eng |
dc.contributor.author | Mahmood, Sohail Musa | eng |
dc.contributor.author | Milosevic, Jovan | eng |
dc.contributor.author | Qvigstad, Henrik | eng |
dc.contributor.author | Richter, Matthias | eng |
dc.contributor.author | Røed, Ketil | eng |
dc.contributor.author | Skaali, Toralf Bernhard | eng |
dc.contributor.author | Tveter, Trine Spedstad | eng |
dc.contributor.author | Wikne, Jon Christopher | eng |
dc.contributor.author | Zhao, Chengxin | eng |
dc.contributor.author | Langøy, Rune | eng |
dc.contributor.author | Lien, Jørgen André | eng |
dc.contributor.author | Ahn, Sul-Ah | eng |
dc.contributor.author | Ajaz, Muhammad | eng |
dc.contributor.author | Akindinov, Alexander | eng |
dc.contributor.author | Aleksandrov, Dimitry | eng |
dc.contributor.author | Alessandro, Bruno | eng |
dc.contributor.author | ALICE, Collaboration | eng |
dc.date.accessioned | 2015-05-15T11:33:01Z | |
dc.date.available | 2015-05-15T11:33:01Z | |
dc.date.issued | 2014-12-05 | eng |
dc.identifier.issn | 0031-9007 | en_US |
dc.identifier.uri | https://hdl.handle.net/1956/9883 | |
dc.description.abstract | 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. | en_US |
dc.language.iso | eng | eng |
dc.publisher | American Physical Society | en_US |
dc.rights | Attribution CC BY | eng |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/ | eng |
dc.title | Exclusive J /ψ photoproduction off protons in ultraperipheral p-Pb collisions at √sNN = 5.02TeV | en_US |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.date.updated | 2015-04-09T06:40:26Z | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright 2014 CERN, for the The ALICE Collaboration | en_US |
dc.source.articlenumber | 232504 | |
dc.identifier.doi | https://doi.org/10.1103/physrevlett.113.232504 | |
dc.identifier.cristin | 1204182 | |
dc.source.journal | Physical Review Letters | |
dc.source.40 | 113 | |
dc.source.14 | 23 | |
dc.subject.nsi | VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 | en_US |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 | nob |