Measurement of exclusive [formula omitted] production in mid-virtuality two-photon interactions at LEP

P Achard,M Rescigno,H Anderhub,B Zimmermann,M Biasini,L Merola,J Kirkby,D Bourilkov,P Le Coultre,S Reucroft,S Shevchenko,M Lebeau,P Lebrun,B Stoyanov,T Azemoon,N Raja,M Pohl,J Debreczeni,L Bellucci,M Chemarin,S.V Baldew,R Clare,B Bertucci,M Wadhwa,C Dionisi,A El Hage,O Grimm,S Riemann,C Sciacca,Q Wang,D Ren,J Ulbricht,M Hohlmann,D Haas,S Sarkar,M Dittmar,P Jindal,M Kaur,W Kittel,A Bay,S Falciano,M Napolitano,F Denotaristefani,P Paolucci,F Cavallari,S Gentile,K Dehmelt,V Pojidaev,S Banerjee,M Bourquin,G Alemanni,A Sakharov,J Fay,M Diemoz,G Rahal-Callot,E Shumilov,P Bartalini,B Musicar,C Furetta,A De Salvo,S Patricelli,D Prokofiev,G Vesztergombi,E Valente,F Marzano,G Chen,A Hervé,D Hatzifotiadou,P Extermann,F Filthaut,I Pal,J Berdugo,F Pierella,A Biland,J Tóth,A Arefiev,C Paus,M Felcini,M Steuer,I Clare,L Taylor,B Borgia,A Straessner,S Giagu,D Teyssier,G Grenier,E Pistolesi,A Mihul,A Degré,M Kräber,L Baksay,E Delmeire,V Plyaskin,A Barczyk,J Mans,K Deiters,S Nagy,S Wynhoff,T Hebbeker,A Doria,H Vogel,T Aziz,P De Jong,N Cavallo,M Musy,R Ramelli,E Longo,J Yamamoto,L Lista,G Viertel,G Coignet,C Tully,G Mirabelli,M Dierckxsens,S Saremi,R Berbeco,T Paul,L Romero,Yu Galaktionov,M Capell,F Becattini,J Alcaraz,M Meschini,M Basile,K Riles,H Fesefeldt,N Colino,A Zichichi,A Shvorob,A Lebedev,J Allaby,C Schäfer,M Cerrada,L Malgeri,H Nowak,W Fisher,R Leiste,M Gataullin,A Kunin,C Palomares,S Sushkov,A Engler,P Berges,C Timmermans,G Holzner,S Bottai,C Cecchi,L Tauscher,A Aloisio,G Ruggiero,E Fiandrini,M Levtchenko,R De Asmundis,A Bajo,Samuel C.C Ting,S Pensotti,M Pedace,O Adriani,I Fisk,K Freudenreich,J Quartieri,U Becker,G Chiefari,M Chamizo,C Li,W Lohmann,C Rosemann,J Hirschfelder,D Duchesneau,H El Mamouni,R Ranieri,H.L Zhuang,G Carlino,F Anselmo,P Bagnaia,H Schopper,S Villa,F Behner,A Favara,A Chen,I Vetlitsky,G Baksay,H Hofer,A Klimentov,G Passaleva,L Servoli,M Duda,A Böhm,I Vodopianov,D Vicinanza,P Lecoq,K Sudhakar,H Milcent,D Piccolo,J Salicio,A Nisati,S Likhoded,P Lecomte,N Batalova,P Denes,S Mele,A Krüger,W Lustermann,V Koutsenko,C Rosenbleck,J Casaus,M Guida,G Cara Romeo,A Gurtu,R Barillère,J Mnich,G Sultanov,B Echenard,K Mazumdar,A Rosca,H Rykaczewski,S Braccini,C Souga,D Perret-Gallix,P Levtchenko,N Shivarov,T Ferguson,D Della Volpe,L Cifarelli,A Raspereza,P Raics,B Tellili,H Suter,A Eline,P.G Rancoita,F Cindolo,R Paramatti,L Luminari,H Vogt,G Organtini,R Battiston,S Costantini,G Landi,P Déglon,V Shoutko,M Biglietti,S Cucciarelli,M Pauluzzi,B De La Cruz,L Xia,S Vlachos,M Vivargent,I Vorobiev,J Pothier,C Luci,G J Bobbink ,B N Jin ,M Pioppí ,J P Martin ,H S Chen ,C Mañá ,V Veszprémi ,S C Yeh ,J D Burger ,J Z Zhao ,R A Ofierzynski ,X L Wang ,J K Kim ,P Ladrón De Guevara ,J G Branson ,F J Eppling ,B P Roe ,S M Ting ,Y S Lu ,Z Szillási ,G Y Zhu ,J J Blaising ,W Lin ,F M Brochu ,S C Tonwar ,M A Rahaman ,A Zalite ,K L Tung ,G B Mohanty ,C H Lin ,O L Fedin ,H F Chen ,L Z Sun ,Sonia Natale ,Min Yang ,G Forconì ,P Garcı́a-Abia ,Imad Baptiste Laktineh ,Z Z Xu ,P Tarján ,A C König ,Y Zalite ,P A Razis ,S Hou ,Z A Liu ,C G Yang ,S N Ganguli ,B Z Yang ,W G ,Z F Gong ,R W Kraemer ,Stefan Roth ,M G Alviggi ,M Kopál ,G M Chen ,E Sánchez ,M A Falagán ,P Piroué ,L Boldizsár ,T Novák ,I Josa-Mutuberrı́a ,R T Van De Walle ,D Stickland ,S Blyth ,J M Le Goff ,J A Rubio ,M N Kienzle‐Focacci ,R Y Zhu ,H J Yang ,D C Son ,X W Tang ,Z P Zhang ,G S Muanza ,A A Vorobyov ,Raymond Vasquez ,Z M Wang ,Martin Weber ,L Gutay ,R R Mcneil ,F Nessi‐Tedaldi ,F Linde ,J Swain ,S Rosier‐Lees ,J H Field ,V Andreev ,F Pauß ,M Aguilar-Benı́tez ,D J Schotanus ,Y H Chang ,M T Dova ,П Спиллантини ,W J Metzger ,X D Cai ,V A Schegelsky ,W J Burger ,А Малинин ,A M Cartacci ,B L Betev ,Virendra K Gupta ,M W Gruenewald ,L W Jones ,P H Fisher ,H B Newman ,A J.m Muijs ,Margot Zöller

doi:10.1016/j.physletb.2004.10.049

Abstract

Exclusive ρ0ρ0 production in two-photon collisions between a quasi-real and a mid-virtuality photon is studied with data collected at LEP at centre-of-mass energies 183<s<209 GeV with a total integrated luminosity of 684.8 pb−1. The cross section of the process γγ*→ρ0ρ0 is determined as a function of the photon virtuality, Q2, and the two-photon centre-of-mass energy, Wγγ, in the kinematic region: 0.2<Q2<0.85 GeV2 and 1.1<Wγγ<3 GeV.

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