Production ofe+e−pairs accompanied by nuclear dissociation in ultraperipheral heavy-ion collisions

J R Adams ,T Kollegger,M Shao,L K Mangotra,J Kiryluk,R Varma,P Chaloupka,Z M Wang,T S Mcshane,Y Fisyak,A Ridiger,T J Humanic,J Schambach,R Majka,M M Aggarwal,M Tokarev,P K Netrakanti,C Mironov,S W Wissink,J Pluta,A Lebedev,L S Schroeder,J Speltz,W A Love,N G Minaev,A Gupta,B Surrow,F Laue,M M De Moura,C A Gagliardi,D Magestro,A Chikanian,N Porile,H Zhang,Y Lu,L Didenko,C Roy,O V Rogachevskiy,J W Watson,J Putschke,J H Thomas,G Wang,J C Webb,H Jiang,A Boucham,L C Bland,E M Kislov,V Fine,Y Chen,L Ruan,S Raniwala,S B Nurushev,W J Dong,C Markert,O Grachov,T Ludlam,M A.C Lamont,M G Munhoz,R V Cadman,O Barannikova,J C Dunlop,M A Lisa,S Hepplemann,M Calderón De La Barca Sánchez,K Kang,I Savin,A M Vander Molen,J Seger,R Witt,R Bellwied,M Janik,J N Marx,V Perevoztchikov,Q Li,P Ghosh,L V Nogach,D Mishra,Yu A Matulenko,J E Draper,W Shao,X L Wang,L G Efimov,B E Bonner,R Vernet,H J Crawford,T Peitzmann,C O Blyth,V Morozov,R Manweiler,M Potekhin,S J Lindenbaum,Z Xu,D P Mahapatra,B Stringfellow,G Odyniec,O Grebenyuk,B Mohanty,M Cherney,S A Voloshin,J P Coffin,M Lopez-Noriega,C F Moore,H Long,J Amonett,Z Milosevich,V Okorokov,F Simon,V Ghazikhanian,G Sood,M R Dutta Mazumdar,A Hamed,A Klyachko,P Yepes,T Dietel,K Krueger,A Szanto De Toledo,A Stolpovsky,P Jacobs,F Du,H Z Huang,K E Shestermanov,T Pawlak,D D Koetke,E Finch,J M Landgraf,K Schweda,H Wieman,S Kabana,M Kopytine,I M Vasilevski,A H Tang,F Liu,W Christie,M S Ganti,Z Ahammed,D G Underwood,J E Gonzalez,M Van Leeuwen,P Sorensen,T Ullrich,G Eppley,L Liu,J Sandweiss,K Filimonov,S Das,R L Ray,B Hippolyte,C Pruneau,D Grosnick,V P Viyogi,S Bekele,P Fachini,A Hirsch,Z Liu,T D Gutierrez,A Wetzler,D Reichhold,A M Poskanzer,Y Bai,G D Westfall,B D Anderson,S S Shimanskiy,S Lange,S Chattopdhyay,E W Hughes,E Yamamoto,D Keane,C L Kunz,E Potrebenikova,C Li,A Stadnik,D Prindle,R P Scharenberg,A Ogawa,A Rose,V S Bhatia,C Perkins,C Kuhn,M Botje,W Peryt,M J Mora-Corral,E Sugarbaker,T A Trainor,S R Klein,B K Nandi,J Castillo,E Hjort,A Kisiel,Y Zoulkarneeva,M Kaplan,B Norman,M Oldenburg,G W Hoffmann,N Xu,A Urkinbaev,X Dong,S M Guertin,D Lynn,H M Spinka,W J Llope,J M Nelson,H F Chen,Y Wang,V I Yurevich,S V Razin,J G Cramer,J Porter,A Bravar,R E Tribble,V I Kravtsov,J Engelage,A Tai,J Cheng,K Fomenko,G S Averichev,B Erazmus,W Q Shen,R Zoulkarneev,T Tarnowsky,I Sakrejda,V Eckardt,J Berger,J Baudot,R Stock,R S Longacre,A I Pavlinov,S Mahajan,S C Phatak,Y Panebratsev,A Ishihara,T M Cormier,B I Bezverkhny,D Olson,S Trentalange,K J Foley,M Strikhanov,J G Reid,M J Levine,N Smirnov,J Gans,T W Henry,R Raniwala,R Wells,O Ravel,P Szarwas,H Bichsel,J Lauret,Z P Zhang,J L Romero,H Ward,J W Harris,A Mischke,W R Edwards,V V Belaga,C Whitten,C Suire,F Wang,J Wood,P S Sazhin,S Margetis,S Timoshenko,T J Hallman,H Caines,J Balewski,D Cebra,J Takahashi,G Van Buren,J Ulery,R Fatemi,E Shahaliev,M Estienne,A K Dubey,P G Jones,S Salur,Y Li,H S Matis,W W Jacobs,Q J Liu,D Arkhipkin,A Meschanin,M Heinz,D Thein,P Seyboth,D Hardtke,V B Dunin,G Igo,A A Derevschikov,E G Judd,A N Zubarev,G Rai,L Gaudichet,W M Zhang,B Srivastava,N Schmitz,J Fu,P Filip,G Renault,C J Mcclain,R Picha,T K Nayak,Y Guo,A Billmeier,G Rakness,L Kotchenda,Samarth Bharadwaj ,A V Brandin ,J T Carroll ,A Vasiliev ,J T Mitchell ,G Škoro ,A A P Suaide ,B Potukuchi ,F Retière ,В Емелянов ,L Molnár ,Barbara T Waggoner ,F Meißner ,Michael L Miller ,J Fedorišin ,S Lehocká ,S Vokál ,J Sowiński ,Jian Wu ,Yu Melnick ,А И Куликов ,M Bysterský ,R.kh Kutuev ,M Krämer ,Piotr Zolnierczuk ,H.g Ritter ,S.e Vigdor ,T D S Stanislaus ,T Ljubičić ,В А Петров ,R Singaraju ,Meenakshi Sharma ,М Взнуздаев ,J Roberts ,J L Klay ,M Šumbera ,S Panitkin ,Y Zanevsky ,G L ,X Cai ,Z Chajęcki ,S Huang ,Lee Stuart Barnby ,Arun Kumar ,В А Никитин ,L M Garcia Martin ,Y G ,F J M Geurts ,R.j.m Snellings ,T J M Symons ,Д А Морозов ,Subrata Pal ,П Кравцов ,R Lednický ,M Planinić ,V Yu Khodyrev ,O D Tsai ,А А Кузнецов ,J G ,Dipayan Das ,J.c Faivre

doi:10.1103/physrevc.70.031902

Abstract

We present data on e+e− pair production accompanied by nuclear breakup in ultraperipheral gold-gold collisions at a center of mass energy of 200GeV per nucleon pair. The nuclear breakup requirement selects events at small impact parameters, where higher-order diagrams for pair production should be enhanced. We compare the data with two calculations: one based on the equivalent photon approximation, and the other using lowest-order quantum electrodynamics (QED). The data distributions agree with both calculations, except that the pair transverse momentum spectrum disagrees with the equivalent photon approach. We set limits on higher-order contributions to the cross section.Received 7 April 2004DOI:https://doi.org/10.1103/PhysRevC.70.031902©2004 American Physical Society

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