Measurement of the photon structure function F2γ with the L3 detector at LEP

P Achard,O Adriani,M Aguilarbenitez,J Alcaraz,G Alemanni,J Allaby,A Aloisio,M G Alviggi,H Anderhub,V Andreev,F Anselmo,A Arefiev,T Azemoon,T Aziz,P Bagnaia,A Bajo,G Baksay,L Baksay,S V Baldew,Sw Banerjee,A Barczyk,R Barillere,P Bartalini,M Basile,N Batalova,R Battiston,A Bay,F Becattini,U Becker,F Behner,L Bellucci,R Berbeco,J Berdugo,P Berges,B Bertucci,B L Betev,M Biasini,M Biglietti,A Biland,J J Blaising,S Blyth,G J Bobbink,A Bohm,L Boldizsar,B Borgia,S Bottai,D Bourilkov,M Bourquin,S Braccini,J G Branson,F M Brochu,J D Burger,W J Burger,X D Cai,M Capell,G Cara Romeo,G Carlino,A M Cartacci,J Casaus,F Cavallari,N Cavallo,C Cecchi,M Cerrada,M Chamizo,Y H Chang,M Chemarin,A Chen,G M Chen,H F Chen,G Chiefari,L Cifarelli,F Cindolo,I Clare,R Clare,G Coignet,N Colino,S Costantini,B De La Cruz,S Cucciarelli,R De Asmundis,P Deglon,J Debreczeni,A Degre,K Dehmelt,K Deiters,D Della Volpe,E Delmeire,P Denes,F Denotaristefani,A De Salvo,M Diemoz,M Dierckxsens,C Dionisi,M Dittmar,A Doria,M T Dova,D Duchesneau,Markus Duda,B Echenard,A Eline,A El Hage,H El Mamouni,A Engler,F J Eppling,P Extermann,M A Falagan,S Falciano,A Favara,Jean Fay,O L Fedin,M Felcini,T Ferguson,H Fesefeldt,E Fiandrini,J H Field,F Filthaut,P H Fisher,W Fisher,I Fisk,G Forconi,K Freudenreich,C Furetta,Yu Galaktionov,S N Ganguli,P Garciaabia,M Gataullin,S Gentile,S Giagu,Z F Gong,G Grenier,O Grimm,M W Gruenewald,M Guida,V K Gupta,A Gurtu,L J Gutay,D Haas,D Hatzifotiadou,T Hebbeker,A Herve,J Hirschfelder,H Hofer,M Hohlmann,G Holzner,S R Hou,B N Jin,P Jindal,L W Jones,P De Jong,I Josamutuberria,M Kaur,M N Kienzlefocacci,J K Kim,J Kirkby,W Kittel,A Klimentov,A C Konig,M Kopal,V Koutsenko,M Kraber,R W Kraemer,A Kruger,A Kunin,P Ladron De Guevara,I Laktineh,G Landi,M Lebeau,A Lebedev,P Lebrun,P Lecomte,P Lecoq,P Le Coultre,J M Le Goff,R Leiste,M Levtchenko,P Levtchenko,Cheng Li,S Likhoded,C H Lin,W T Lin,F L Linde,L Lista,Z A Liu,W Lohmann,Egidio Longo,Y S Lu,C Luci,L Luminari,W Lustermann,W G Ma,L Malgeri,A Malinin,C Mana,J Mans,J P Martin,F Marzano,K Mazumdar,R R Mcneil,S Mele,Philippe Mermod,L Merola,M Meschini,W J Metzger,A Mihul,H Milcent,G Mirabelli,J Mnich,G B Mohanty,G S Muanza,A J M Muijs,B Musicar,M Musy,S Nagy,S Natale,M Napolitano,F Nessitedaldi,H B Newman,A Nisati,T Novak,H Nowak,R A Ofierzynski,G Organtini,I Pal,C Palomares,P Paolucci,R Paramatti,G Passaleva,S Patricelli,T Paul,M Pauluzzi,C Paus,F Pauss,M Pedace,S Pensotti,D Perretgallix,D Piccolo,F Pierella,M Pioppi,P A Piroue,E Pistolesi,V Plyaskin,M Pohl,V Pojidaev,J Pothier,D Prokofiev,G Rahalcallot,M A Rahaman,P Raics,N Raja,R Ramelli,P G Rancoita,R Ranieri,Alexei Raspereza,P A Razis,D Ren,M Rescigno,S Reucroft,S Riemann,K Riles,B P Roe,L Romero,A Rosca,C Rosemann,C Rosenbleck,S Rosierlees,S Roth,J A Rubio,G Ruggiero,H Rykaczewski,A Sakharov,S Saremi,S Sarkar,J Salicio,Elda E Sanchez,C Schafer,V A Schegelsky,H Schopper,D J Schotanus,C Sciacca,L Servoli,S Shevchenko,N Shivarov,V Shoutko,E Shumilov,A Shvorob,D Son,C Souga,P Spillantini,M Steuer,D P Stickland,B Stoyanov,A Straessner,K Sudhakar,G Sultanov,L Z Sun,S Sushkov,H Suter,J D Swain,Z Szillasi,X W Tang,P Tarjan,L Tauscher,L Taylor,B Tellili,D Teyssier,C Timmermans,Samuel C C Ting,S C Tonwar,Jozsef Toth,C Tully,K L Tung,J Ulbricht,Enza Maria Valente,R T Van De Walle, Ricardo A Vasquez,V Veszpremi,G Vesztergombi,I Vetlitsky,G Viertel,S Villa,M Vivargent,S Vlachos,I Vodopianov,Helmut Vogel,H Vogt,I Vorobiev,A A Vorobyov,M Wadhwa,Qingqing Wang,X L Wang,Z M Wang,M Weber,S Wynhoff,L Xia,Z Z Xu,Jun Yamamoto,B Z Yang,C G Yang,H J Yang,Mingming Yang,S C Yeh,An Zalite,Yu Zalite,Z P Zhang, Junhua Zhao,G Y Zhu,R Y Zhu,H L Zhuang,A Zichichi,B Zimmermann,M Zoller

Physics Letters B（2005）

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摘要

The e+e−→e+e−hadrons reaction, where one of the two electrons is detected in a low polar-angle calorimeter, is analysed in order to measure the hadronic photon structure function F2γ. The full high-energy and high-luminosity data set, collected with the L3 detector at centre-of-mass energies 189GeV⩽s⩽209GeV, corresponding to an integrated luminosity of 608 pb−1 is used. The Q2 range 11GeV2⩽Q2⩽34GeV2 and the x range 0.006⩽x⩽0.556 are considered. The data are compared with recent parton density functions.

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lEP,two-photon physics,hadrons

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