Coherent [formula omitted] photoproduction in ultra-peripheral Pb–Pb collisions at [formula omitted

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Scapparone,F Carena,Ø Djuvsland,Y Wang,A Andronic,V Anguelov,F Noferini,A Rakotozafindrabe,J Figiel,V Manzari,I Das,P Pillot,M Krivda,E Stenlund,A Zimmermann,G M Urciuoli ,M Petriş ,M J Kweon ,P Strmeň ,M G Poghosyan ,V Cătănescu ,C Ceballos Sànchez ,K Šafařı́k ,L H González-Trueba ,C G Yaldo ,M A Mazzoni ,I E Yushmanov ,A G Knospe ,D P Mahapatra ,Jin Joo Seo ,A De ,T Šuša ,A G Hansen ,С Сано ,M C S Williams ,B A Hess ,Z L Matthews ,N A Martin ,Sami Sakari Rasanen ,K F Hetland ,B S Nielsen ,Martin Girard ,J.‐Y Grossiord ,N K Behera ,S T Heckel ,C Pruneau ,T C Awes ,J Milošević ,G Lövhöiden ,E M Fiore ,Carlos A Salgado ,M R Cosentino ,M Krůs ,Christoph Mayer ,B Sitár ,G Garcı́a ,R C Baral ,M A S Figueredo ,S K Pal ,Yongwook Baek ,S L La Pointe ,F Křížek ,L Molnár ,A Gheaţă ,H H Dalsgaard ,T M Cormier ,E García-Solis ,J Wiechuła ,L K Graczykowski ,H A Erdal ,D Berényi ,A M Gago ,M A Diaz Corchero ,D Vranić ,C M Mitu ,Kai Loo ,S U Chung ,G L Usai ,A Menchaca‐Rocha ,C H Christensen ,D A Moreira De Godoy ,H P Beck ,A I Pavlinov ,A V Kazantsev ,E Gładysz-Dziaduś ,J I Yi ,Y P Viyogi ,P L.m Podesta-Lerma ,R T Jimenez Bustamante ,A K Dutta Majumdar ,A Martínez Dávalos ,Matthias Richter ,I S Zgură ,M A Subieta Vásquez ,P G Kuijer ,A K Bhati ,Alexander Philipp Kalweit ,I G Bearden ,I C Arsene ,B S Nilsen ,T B Skaali ,K.j Ma ,R Reed ,S K Oh ,H R Schmidt ,А Виноградов ,M Petráň ,Ji Eun Lee ,P H S Y Jayarathna ,M G Munhoz ,D R Gangadharan ,B T Rascanu ,E Belmont‐Moreno ,A Badalá ,G M Innocenti ,F M Fionda ,D I Patalakha ,A Jachołkowski ,Kenneth Francis Read ,L D Hanratty ,J J Gaardhøje ,V.-R Loggins ,A Maŕın ,J L Klay ,T K Nayak ,J S Réal ,H M Ljunggren ,M K Köhler ,Giovanni Romeo ,Alexander Kluge ,G S Pappalardo ,C Cicalò ,P G Innocenti ,J P Wessels ,A A P Suaide ,C Soós ,I K Yoo ,E G Ferreiro ,T A Browning ,M S Nilsson ,A Öskarsson ,J Král ,E Mudnić ,Josef Urban ,A R Reolon ,J G Contreras ,M A Lisa ,Constantinos Loizides ,D D Chinellato ,A B Kaǐdalov ,P Jones ,T S Räihä ,M M Aggarwal ,R A Soltz ,M L Knichel ,S K Prasad ,T J Humanic ,J W Harris ,J D Tapia ∋Takaki ,J F Grosse-Oetringhaus ,D M Madagodahettige-Don ,T J M Symons ,B H Han ,Nicolas Bock ,J F Castillo Hernandez ,Aditya Nath Mishra ,M Mohisin Khan ,A Adare ,P I Loenne ,G Bruno ,L K Mangotra ,D S Hwang ,A R Timmins ,D Røhr ,J L Charvet ,M A Janik ,D B Piyarathna ,Bikash Sinha ,P Jacobs ,G V Margagliotti ,Ester Anna Rita Casula ,B K Nandi ,G Bencédi ,S Khan ,M D Azmi ,H J Jang ,M E Cotallo ,A A.e Bergognon ,M Planinić ,J H Stiller ,W H Trzaska ,Lee Stuart Barnby ,A G Agocs ,S U Ahn ,Г Феофилов ,M Martı́nez ,D M Jha ,R A Ricci ,P K Sahu ,R P Scharenberg ,Y Schütz ,D Haşegan ,D Mal’kevich ,B Srivastava ,M Spyropoulou‐Stassinaki ,S Pochybová ,Trine Spedstad Tveter ,A K Dubey ,S Beolè ,C A Marin Tobon ,G G Barnaföldi ,I Léon Monźon ,P Braun‐Munzinger ,R Ma ,J H Kang

doi:10.1016/j.physletb.2012.11.059

Abstract

The ALICE Collaboration has made the first measurement at the LHC of J/ψ photoproduction in ultra-peripheral Pb–Pb collisions at sNN=2.76 TeV. The J/ψ is identified via its dimuon decay in the forward rapidity region with the muon spectrometer for events where the hadronic activity is required to be minimal. The analysis is based on an event sample corresponding to an integrated luminosity of about 55 μb−1. The cross section for coherent J/ψ production in the rapidity interval −3.6<y<−2.6 is measured to be dσJ/ψcoh/dy=1.00±0.18(stat)−0.26+0.24(syst) mb. The result is compared to theoretical models for coherent J/ψ production and found to be in good agreement with those models which include nuclear gluon shadowing.

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