Determination of the e+e−→γγ(γ) cross-section at centre-of-mass energies ranging from 189 GeV to 202 GeV
P. Abreu,W. Adam,T. Adye,P. Adzic,Z. Albrecht,T. Alderweireld,G.D. Alekseev,R. Alemany,T. Allmendinger,P.P. Allport,S. Almehed,U. Amaldi,N. Amapane,S. Amato,E.G. Anassontzis,P. Andersson,A. Andreazza,S. Andringa,P. Antilogus,W.-D. Apel,Y. Arnoud,B. Åsman,J.-E. Augustin,A. Augustinus,P. Baillon,A. Ballestrero,P. Bambade,F. Barao,G. Barbiellini,R. Barbier,D.Y. Bardin,G. Barker,A. Baroncelli,M. Battaglia,M. Baubillier,K.-H. Becks,M. Begalli,A. Behrmann,P. Beilliere,Yu. Belokopytov,K. Belous,N.C. Benekos,A.C. Benvenuti,C. Berat,M. Berggren,L. Berntzon,D. Bertrand,M. Besancon,M.S. Bilenky,M.-A. Bizouard,D. Bloch,H.M. Blom,M. Bonesini,M. Boonekamp,P.S.L. Booth,G. Borisov,C. Bosio,O. Botner,E. Boudinov,B. Bouquet,C. Bourdarios,T.J.V. Bowcock,I. Boyko,I. Bozovic,M. Bozzo,M. Bracko,P. Branchini,R.A. Brenner,P. Bruckman,J.-M. Brunet,L. Bugge,T. Buran,B. Buschbeck,P. Buschmann,S. Cabrera,M. Caccia,M. Calvi,T. Camporesi,V. Canale,F. Carena,L. Carroll,M.V. Castillo Gimenez,A. Cattai,F.R. Cavallo,M. Chapkin,Ph. Charpentier,P. Checchia,G.A. Chelkov,R. Chierici,P. Chliapnikov,P. Chochula,V. Chorowicz,J. Chudoba,K. Cieslik,P. Collins,R. Contri,E. Cortina,G. Cosme,F. Cossutti,M. Costa,H.B. Crawley,D. Crennell,G. Crosetti,J. Cuevas Maestro,S. Czellar,J. D'Hondt,J. Dalmau,M. Davenport,W. Da Silva,G. Della Ricca,P. Delpierre,N. Demaria,A. De Angelis,W. De Boer,C. De Clercq,B. De Lotto,A. De Min,L. De Paula,H. Dijkstra,L. Di Ciaccio,J. Dolbeau,K. Doroba,M. Dracos,J. Drees,M. Dris,G. Eigen,T. Ekelof,M. Ellert,M. Elsing,J.-P. Engel,M. Espirito Santo,G. Fanourakis,D. Fassouliotis,M. Feindt, J. Fernandez,A. Ferrer,E. Ferrer-Ribas,F. Ferro,A. Firestone,U. Flagmeyer,H. Foeth,E. Fokitis,F. Fontanelli,B. Franek,A.G. Frodesen,R. Fruhwirth,F. Fulda-Quenzer,J. Fuster,A. Galloni,D. Gamba,S. Gamblin,M. Gandelman,C. Garcia,C. Gaspar,M. Gaspar,U. Gasparini,Ph. Gavillet,E.N. Gazis,D. Gele,T. Geralis,N. Ghodbane,I. Gil,F. Glege,R. Gokieli,B. Golob,G. Gomez-Ceballos,P. Goncalves,I. Gonzalez Caballero,G. Gopal,L. Gorn,Yu. Gouz,V. Gracco,J. Grahl,E. Graziani,P. Gris,G. Grosdidier,K. Grzelak,J. Guy,C. Haag,F. Hahn,S. Hahn,S. Haider,Z. Hajduk,A. Hallgren,K. Hamacher,J. Hansen,F.J. Harris,F. Hauler,V. Hedberg,S. Heising,J.J. Hernandez,P. Herquet,H. Herr,E. Higon,S.-O. Holmgren, P.J. Holt,S. Hoorelbeke,M. Houlden,J. Hrubec,M. Huber,G.J. Hughes,K. Hultqvist,J.N. Jackson,R. Jacobsson,P. Jalocha,R. Janik,Ch. Jarlskog,G. Jarlskog,P. Jarry,B. Jean-Marie,D. Jeans,E.K. Johansson,P. Jonsson,C. Joram,P. Juillot,L. Jungermann,F. Kapusta,K. Karafasoulis,S. Katsanevas,E.C. Katsoufis,R. Keranen,G. Kernel,B.P. Kersevan,Yu. Khokhlov,B.A. Khomenko,N.N. Khovanski,A. Kiiskinen,B. King,A. Kinvig,N.J. Kjaer,O. Klapp,P. Kluit,P. Kokkinias,V. Kostioukhine,C. Kourkoumelis,O. Kouznetsov,M. Krammer,E. Kriznic,Z. Krumstein,P. Kubinec,W. Kucewicz,J. Kurowska,K. Kurvinen,J.W. Lamsa,D.W. Lane,V. Lapin,J.-P. Laugier,R. Lauhakangas,G. Leder,F. Ledroit,L. Leinonen,A. Leisos,R. Leitner,J. Lemonne,G. Lenzen,V. Lepeltier,M. Lethuillier,J. Libby,W. Liebig,D. Liko,A. Lipniacka,I. Lippi,B. Loerstad,J.G. Loken, J.H. Lopes,J.M. Lopez,R. Lopez-Fernandez,D. Loukas,P. Lutz,L. Lyons,J. MacNaughton,J.R. Mahon,A. Maio,A. Malek,S. Maltezos,V. Malychev,F. Mandl,J. Marco,R. Marco,B. Marechal,M. Margoni,J.-C. Marin,C. Mariotti,A. Markou,C. Martinez-Rivero,S. Marti i Garcia,J. Masik,N. Mastroyiannopoulos,F. Matorras,C. Matteuzzi,G. Matthiae,F. Mazzucato,M. Mazzucato,M. Mc Cubbin,R. Mc Kay,R. Mc Nulty,G. Mc Pherson,E. Merle,C. Meroni,W.T. Meyer,A. Miagkov,E. Migliore, L. Mirabito,W.A. Mitaroff,U. Mjoernmark,T. Moa,M. Moch,R. Moeller,K. Moenig,M.R. Monge,D. Moraes,P. Morettini,G. Morton,U. Mueller,K. Muenich,M. Mulders,C. Mulet-Marquis,L.M. Mundim,R. Muresan,W.J. Murray,B. Muryn,G. Myatt,T. Myklebust,F. Naraghi,M. Nassiakou,F.L. Navarria,K. Nawrocki,P. Negri,N. Neufeld,R. Nicolaidou,B.S. Nielsen,P. Niezurawski,M. Nikolenko,V. Nomokonov,A. Nygren,A. Oblakowska Mucha,V. Obraztsov,A.G. Olshevski,A. Onofre,R. Orava,G. Orazi,K. Osterberg,A. Ouraou,A. Oyanguren, M. Paganoni,S. Paiano,R. Pain,R. Paiva,J. Palacios,Th.D. Papadopoulou,L. Pape,C. Parkes,F. Parodi,U. Parzefall,A. Passeri,O. Passon,T. Pavel,M. Pegoraro,L. Peralta,M. Pernicka,A. Perrotta,C. Petridou,A. Petrolini,H.T. Phillips,F. Pierre,M. Pimenta,E. Piotto,T. Podobnik,V. Poireau,M.E. Pol,G. Polok,P. Poropat,V. Pozdniakov,P. Privitera,N. Pukhaeva,A. Pullia,D. Radojicic,S. Ragazzi,H. Rahmani,J. Rames,P.N. Ratoff,A.L. Read,P. Rebecchi,N.G. Redaelli,M. Regler,J. Rehn,D. Reid,P. Reinertsen,R. Reinhardt,P.B. Renton,L.K. Resvanis,F. Richard,J. Ridky,G. Rinaudo,I. Ripp-Baudot,A. Romero,P. Ronchese,E.I. Rosenberg,P. Rosinsky,P. Roudeau,T. Rovelli,V. Ruhlmann-Kleider,A. Ruiz,H. Saarikko,Y. Sacquin,A. Sadovsky,G. Sajot,J. Salt,D. Sampsonidis,M. Sannino,A. Savoy-Navarro,Ph. Schwemling,B. Schwering,U. Schwickerath,F. Scuri,P. Seager,Y. Sedykh,A.M. Segar,N. Seibert,R. Sekulin,G. Sette,R.C. Shellard,M. Siebel,L. Simard,F. Simonetto,A.N. Sisakian,G. Smadja,O. Smirnova,G.R. Smith,O. Solovianov,A. Sopczak,R. Sosnowski,T. Spassov,E. Spiriti,S. Squarcia,C. Stanescu,M. Stanitzki,K. Stevenson,A. Stocchi,J. Strauss,R. Strub,B. Stugu,M. Szczekowski,M. Szeptycka,T. Tabarelli,A. Taffard,F. Tegenfeldt,F. Terranova,J. Timmermans,N. Tinti,L.G. Tkatchev,M. Tobin,S. Todorova,B. Tome,A. Tonazzo,L. Tortora,P. Tortosa,G. Transtromer,D. Treille,G. Tristram,M. Trochimczuk,C. Troncon,M.-L. Turluer,I.A. Tyapkin,P. Tyapkin,S. Tzamarias,O. Ullaland,V. Uvarov,G. Valenti,E. Vallazza,P. Van Dam,W. Van den Boeck,J. Van Eldik,A. Van Lysebetten,N. van Remortel, I. Van Vulpen,G. Vegni,L. Ventura,W. Venus,F. Verbeure,P. Verdier,M. Verlato,L.S. Vertogradov,V. Verzi,D. Vilanova,L. Vitale,E. Vlasov,A.S. Vodopyanov,G. Voulgaris,V. Vrba,H. Wahlen,A.J. Washbrook,C. Weiser,D. Wicke,J.H. Wickens,G.R. Wilkinson,M. Winter,G. Wolf,J. Yi,O. Yushchenko,A. Zalewska,P. Zalewski,D. Zavrtanik,E. Zevgolatakos,N.I. Zimin,A. Zintchenko,Ph. Zoller,G. Zumerle,M. Zupan
Physics Letters B（2000）
引用 17|浏览5
摘要
A test of the QED process e+e−→γγ(γ) is reported. The data analysed were collected with the DELPHI detector in 1998 and 1999 at the highest energies achieved at LEP, reaching 202 GeV in the centre-of-mass. The total integrated luminosity amounts to 375.7 pb−1. The differential and total cross-sections for the process e+e−→γγ were measured, and found to be in agreement with the QED prediction. 95% confidence level (C.L.) lower limits on the QED cut-off parameters of Λ+>330 GeV and Λ−>320 GeV were derived. A 95% C.L. lower bound on the mass of an excited electron of 311 GeV/c2 (for λγ=1) was obtained. s-channel virtual graviton exchange was searched for, resulting in 95% C.L. lower limits on the string mass scale, MS: MS>713 GeV/c2 (λ=1) and MS>691 GeV/c2 (λ=−1).
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树，研究论文发展脉络
Chat Paper
正在生成论文摘要