Study of dimuon production in photon-photon collisions and measurement of QED photon structure functions at LEP

P Abreu,Valery Pozdnyakov, K Nawrocki,B Jeanmarie,J Van Eldik,U Mjornmark,C Bosio,D Crennell,N I Zimine, A Augustinus,E K Johansson, R Nicolaidou,R Barbier,S Heising, P Adzic,S Fichet,C Haag, P Chochula,F Parodi, N Seibert, G Vegni,Sergio Navas, A Ouraou,R Marco,Stefano Ragazzi,Jan Timmermans,K Cieslik, D Radojicic,M Nassiakou,N J Kjaer,N Neufeld, L Pape,G Smadja,G D Alekseev,J Dolbeau, L Lyons,P Roudeau, E Vlasov, G Valenti,G Grosdidier,S Amato, M Houlden, J Salt,P Herquet,G Rinaudo, A W Borgland,O Klapp,J Lemonne,I Rippbaudot, O Rohne,B Buschbeck,W Mitaroff,J Kurowska,J Ridky,Z Krumshtein,A De Min, F Scuri,B De Lotto,H Saarikko, I Boyko,A Zalewska, V Hedberg,Yu Belokopytov,W De Boer,I Bozovic, D Treille,S Katsanevas, K H Becks,T Tabarelli,R Strub,E N Gazis, C Petridou,H M Blom,O Yushchenko,A B Fenyuk,A Sadovsky,M Mccubbin,J Guy,Ph Gavillet,M Szczekowski,A S Vodopianov,J Cuevas Maestro,A Kinvig,W Venus,J Yi, C Caso,D Fassouliotis,R Mckay,Th D Papadopoulou, M Stanitzki,O Smirnova,R Janik, N Redaelli,R Sekulin,F J Harris,S Paiano,G R Smith, D Gele,S Creperenaudin,M Battaglia,X Moreau,G Ekspong,A N Sisakian,V Malychev,J P Laugier,M Elsing, P Shlyapnikov,T L Hessing, Cristina Romeroavila Garcia,A G Frodesen,A Leisos,J H Wickens,H T Phillips, M Pegoraro, W Adam, K Doroba,P Antilogus, E Graziani, Aparisi Romero,M Bonesini,L Di Ciaccio, F Verbeure,I Van Vulpen,T Lesiak,P Kluit,F Fuldaquenzer, A Stocchi,J Heuser, T J Pavel, W Van Den Boeck,F Hahn,E C Katsoufis, Klaus Monig,B A Khomenko,A Malek,E Higon,F Pierre, M Margoni,S Haider, M S Bilenky,J Marco, G Sajot,B Tome,T Rovelli,M Caccia,T Adye, W T Meyer,J Chudoba,Y Arnoud, C Royon,B Lorstad, S O Holmgren, R Chierici, R Fruhwirth,B Bouquet, Piet Van Dam,Y Sacquin,J C Marin, A L Read,M C Espirito Santo,F Mazzucato, C Bourdarios,P Buschmann,N Van Remortel, R Orava,J Libby, M Mazzucato,N Demaria,L Peralta, B Asman,T Camporesi, N Smirnov,A Duperrin,R Contri,N Pukhaeva,P J Holt,S Hahn,G W Morton,R Alemany,M Dracos,S Tzamarias,V Nomokonov, D Vilanova,A Passeri,V Lefebure,G Transtromer,M Bracko,I Gonzalez Caballero,H Herr,G Cosme, D Wicke,F Martinezvidal,B P Kersevan, R Gokieli,S Gamblin,F Naraghi,G Leder,E Vallazza, R Brenner,Philippe Schwemling,P Rosinsky,S Andringa,V Obraztsov,Tz Spassoff,W D Apel,C Berat,E Fokitis,F Ledroit, F Carena, C Mariotti,E Piotto,C Stanescu,G Fanourakis,F Matorras,A Sopczak,Z Albrecht,G Polok,E Ferrerribas,M Szeptycka,R Jacobsson,L Tortora, C Joram, D Bloch,H Palka,T Myklebust,F Ferro,P Renton,V Ruhlmannkleider,D Yu Bardin,P Andersson,Oleg A Kuznetsov,M Dris, P N Ratoff,U Muller,P Seager,G Kernel, M Mulders, P Morettini, F Simonetto,V Lepeltier, A G Myagkov,J Rehn,S Marti I Garcia,A Kiiskinen,Philippe Charpentier,A Tonazzo,S Hoorelbeke,R Moller, G Barbiellini,R Reinhardt,S Stanic,S Todorova,Yu Gouz,A Nygren,M Regler,L Vitale,P Poropat,H Dijkstra,J Fayot, V Canale,J R Hansen,K Kurvinen,D Moraes,C Matteuzzi,A M Segar,D W Lane, V Vrba,J Macnaughton, P Bambade,Tord Ekelof,G Matthiae,P Zalewski,M Winter,G Eigen,C Troncon,A Van Lysebetten, P Checchia,P P Allport, A Baroncelli,M E Huber,Barry King,M Davenport, F Glege,L Jungermann, M Pernicka,N Mastroyiannopoulos,P Negri,G Myatt,P S L Booth, M Boonekamp,B Schwering, A Taffard,O Passon,U Schwickerath,M A Bizouard,K Karafasoulis, A Cattai,W J Murray, T Buran,J R Mahon,R Mcnulty,Josef Strauss,K Hamacher,G Borisov,L Ventura,M Bozzo, J Masik,C Walck,M Begalli,Peter Zoller,Ch Jarlskog,O Botner,Ines Gil Botella,P Niezurawski,M Pimenta,M Moch, I Azhinenko,R Leitner,C Kourkoumelis, R Lopezfernandez,V Uvarov,A De Angelis,Linda J Carroll,P Rebecchi, J H Thomas,K Grzelak,E I Rosenberg,V Chorowicz, W Liebig, K Hultqvist, E Migliore,E G Anassontzis,M Trochimczuk,R Pain,B Stugu,C Parkes, V V Kostyukhin,C Gaspar,T Allmendinger,P Tortosa,M Gandelman,P Kubinec,V Gracco,G Della Ricca,A Zinchenko, G A Chelkov,S Squarcia,I A Tyapkin, T Moa,C Martinezrivero,R Sosnowski, J N Jackson, P Juillot,M Berggren, C Meroni,B Franek,K Papageorgiou,D Gamba,V Chabaud,D Loukas,T Podobnik,F Fontanelli,P Jonsson,R Muresan,G Tristram,M Verlato, G Lenzen,L Simard, P Ronchese, D Liko,G Orazi,P Kokkinias, G Jarlskog,P Bruckman,U Flagmeyer,G Mcpherson,J D Durand,G C Zucchelli,E Kriznic,M Gaspar,D Reid,E Boudinov, A Perrotta,C Muletmarquis,J H Lopes, U Gasparini, G Hughes,Walter Van Doninck,E Zevgolatakos,N Ghodbane, A Markou,M Tobin, A Tomaradze,G J Barker,R C Shellard,L Leinonen,H Rahmani, F Cossutti, F R Cavallo,F Mandl,M Baubillier,A Petrolini, J Drees, L Bugge, M Lethuillier,P Goncalves,W Da Silva, S Czellar,M Bigi, P Branchini,N Amapane,B Golob,R Keranen, M Calvi,P Gris, F Barao,A Onofre,N Benekos,D Jeans,J M Lopez,P Collins,Andrew Washbrook,C De Clercq, U Parzefall,O Ullaland,M Nikolenko,A G Olshevsky,U Amaldi,J Fuster,F L Navarria,T G M Malmgren,A Ruiz,I Lippi,G Wilkinson, L Mirabito,M Krammer,J E Augustin,P Verdier,V Verzi,D Zavrtanik,C Weiser,R Lauhakangas,P Privitera,C Vander Velde,P Beilliere,R Paiva,A Galloni,J M Brunet,J Palacios,J Rames, L G Tkachev,M Witek,S Cabrera,B S Nielsen,J P Engel,J G Loken,A Ferrer,N N Khovansky, A Hallgren,L K Resvanis,M V Castillo Gimenez,F Kapusta, P Jarry, M Feindt,J J Hernandez,F Terranova,A Andreazza, D Sampsonidis,M L Turluer,N Tinti, A Lipniacka,L S Vertogradov,K Stevenson,Y Sedykh, D Bertrand,K Huet,F Richard, Hansjorg Klein,B Marechal, A Pullia,A Maio,M R Monge,A Behrmann, H Wahlen,L De Paula, J Hrubec,T Alderweireld,G Gomezceballos,S Almehed,K Osterberg,Mattias Ellert, M Besancon,L Gorn,H Foeth,A Firestone, G Crosetti, A C Benvenuti,H B Crawley,T J V Bowcock, G Zumerle,J W Lamsa, P Baillon,E Spiriti, M E Pol,M Paganoni,F Tegenfeldt,S Maltezos, M Sannino,B Muryn,M Siebel,J Grahl, P Delpierre,E Cortina,V Lapin,P Lutz,G Voulgaris,G Wolf, K Munich,G P Gopal,O G Chikilev,P Jalocha

European Physical Journal C（2001）

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摘要

. Muon pair production in the process is studied using the data taken at LEP1 () with the DELPHI detector during the years 1992-1995. The corresponding integrated luminosity is 138.5 pb. The QED predictions have been tested over the whole range accessible at LEP1 (from several GeV to several hundred GeV) by comparing experimental distributions with distributions resulting from Monte Carlo simulations using various generators. Selected events are used to extract the leptonic photon structure function . Azimuthal correlations are used to obtain information on additional structure functions, and , which originate from interference terms of the scattering amplitudes. The measured ratios and are significantly different from zero and consistent with QED predictions.

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关键词

photon structure function,scattering amplitude,monte carlo simulation,particle physics,structure function,pair production,scattering

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