A study of the reaction ${e^+ e^- \rightarrow \mu^+ \mu^- \gamma_{\sc ISR}}$ at LEP and search for new physics at annihilation energies near 80 GeV

P. Abreu et al., A Augustinus,E Boudinov, D J Holthuizen,N J Kjaer, P Kluit, M Mulders,M Nieuwenhuizen,J Timmermans,D Z Toet,Apeldoorn G W Van,Dam P H A Van,Eldik J E Van,W Adam,T Adye,I Ajinenko, G D Alekseev,Ricard Alemany,P P Allport,S Almehed, U Amaldi,S Amato,P Andersson,A Andreazza,P Antilogus,W D Apel, B Asman,J E Augustin, P Baillon, P Bambade, F Barao,M Barbi,G Barbiellini,D Y Bardin,Gareth J Barker, A Baroncelli,O Barring,Matthew Bates,M Battaglia,M Baubillier,J Baudot, K H Becks,M Begalli,P Beilliere,Yu Belokopytov,K Belous,A C Benvenuti,M Berggren,D Bertini,Damien Bertrand, M Besancon,F Bianchi,M Bigi,S M Bilenky,P Billoir,M A Bizouard,D Bloch,Matthias Blume,M Bonesini,W Bonivento,P S L Booth, A W Borgland,G Borisov, C Bosio,O Botner,B Bouquet, C Bourdarios,T J V Bowcock,I Bozovic,M Bozzo, P Branchini,K D Brand,T Brenke, R Brenner,C Bricman,R C A Brown,P Bruckman,J M Brunet, L Bugge, T Buran, T Burgsmuller,P Buschmann,Susana Cabrera,M Caccia, M Calvi, A J Camachorozas, T Camporesi, V Canale,M Canepa,Francisco J Cao,F Carena,L Carroll,C Caso,M V Castillogimenez, A Cattai, F R Cavallo,V Chabaud,Ph Charpentier,L Chaussard,P Checchia, G A Chelkov, M G Chen, R Chierici,P Chliapnikov, P Chochula,V Chorowicz,J Chudoba,V Cindro,P Collins,R Contri,E Cortina,G Cosme, F Cossutti,J H Cowell,H B Crawley,D Crennell, G Crosetti,J Cuevasmaestro, S Czellar,J Dahm,B Dalmagne,M Dam,G Damgaard, P D Dauncey,Martyn Davenport,Wilfrid Da Silva,A Deghorain,G Della Ricca, P Delpierre, N Demaria,A De Angelis,Wim De Boer,S De Brabandere,C De Clercq,Ch De La Vaissiere,Barbara De Lotto,A De Min,L S De Paula,H Dijkstra,Lucia Di Ciaccio,A Di Diodato,A Djannati,J Dolbeau, K Doroba,M Dracos, J Drees,K A Drees, M Dris,J D Durand,D Edsall,R Ehret,G Eigen,Tord Ekelof,G Ekspong,M Elsing,J P Engel,B Erzen, M C Espiritosanto,E Falk,G Fanourakis, D Fassouliotis, M Feindt,A B Fenyuk,P Ferrari,A Ferrer,S Fichet, A Filippastassos,Alexander Firestone,Phil Fischer, H Foth,E Fokitis,F Fontanelli,F Formenti,B Franek,A G Frodesen, R Fruhwirth,F Fuldaquenzer,J Fuster,A Galloni,D Gamba,M Gandelman,C Garcia,J E Garcia,C Gaspar, U Gasparini,Ph Gavillet, E N Gazis, D Gele,J P Gerber,L N Gerdyukov, R Gokieli,B Golob,Patricia Goncalves,G P Gopal,L Gorn,Maciej Gorski,Yu Guz,Valerio Gracco, E Graziani,C Green,A Grefrath,P Gris,G Grosdidier,K Grzelak, S A Gumenyuk,M Gunther,J Guy,F Hahn,S R Hahn, Z Hajduk, A Hallgren,K Hamacher,F J Harris, V Hedberg,J J Hernandez,P Herquet,H Herr,T L Hessing, J Heuser,E Higon,H J Hilke, S O Holmgren,P J Holt,S Hoorelbeke, M Houlden, J Hrubec,K Huet, K Hultqvist, J N Jackson,R Jacobsson,P Jalocha,R Janik,Ch Jarlskog, G Jarlskog,Philippe Jarry, B Jeanmarie,E K Johansson,Lars Jonsson,P Jonsson, C Joram, P Juillot,M Kaiser,F Kapusta,K Karafasoulis,Magnus Karlsson,S Katsanevas,E C Katsoufis,R Keranen,Yu A Khokhlov,B A Khomenko, N N Khovanskii, B T King,O Klapp,H Klein,D Knoblauch,P Kokkinias,M Koratzinos, K Korcyl, V V Kostyukhin, C Kourkoumelis,Oleg A Kuznetsov,Manfred Krammer,C Kreuter,I Kronkvist,Z Krumshtein,W Krupinski,P Kubinec,W Kucewicz,K Kurvinen,C Lacasta,I Laktineh,J W Lamsa,L Lanceri,D W Lane,P Langefeld, J Ph Laugier,R Lauhakangas, Gerhard Leder,F Ledroit,V Lefebure,C K Legan,A Leisos, R Leitner,J Lemonne, G Lenzen,V Lepeltier,T Lesiak,J Libby, D Liko,A Lipniacka,I Lippi,B Lorstad,J G Loken,J M Lopez, D Loukas,P Lutz, L Lyons,G Maehlum,J R Mahon, A Maio,T G M Malmgren,V Malychev,F Mandl,J Marco,Rafael Marco,B Marechal, M Margoni, J Cl Marin, C Mariotti,Athina Markou,C Martinezrivero,F Martinezvidal,S Marti I Garcia, J Masik,F Matorras, C Matteuzzi,G Matthiae, M Mazzucato,M Mccubbin,Ronald D G Mckay,R Mcnulty,J Medbo, C Meroni,Stephan S Meyer, W T Meyer,M Michelotto, E Migliore, L Mirabito,W Mitaroff,U Mjornmark,Torbjorn Moa, R Moller,Klaus Monig,M R Monge, P Morettini,H Muller, K Munich,L Mundim,W J Murray,B Muryn,Gerald Myatt,T Myklebust,F Naraghi, F L Navarria,Sergio Navas, K Nawrocki,P Negri, S Nemecek,W Neumann, N Neumeister, R Nicolaidou,B S Nielsen, V Nikolaenko,M Nikolenko,P Niss,A Nomerotski,Ainsley Normand,W Oberschultebeckmann,V Obraztsov,A G Olshevskii,A Onofre, R Orava,G Orazi,K Osterberg, A Ouraou, P Paganini,M Paganoni,R Pain,H Palka,Th D Papadopoulou,K Papageorgiou, L Pape,C Parkes,Fabrizio Parodi,A Passeri,Mirko Pegoraro,L Peralta, H Pernegger, M Pernicka, A Perrotta, Ch Petridou,A Petrolini,H T Phillips,G Piana,F Pierre,M Pimenta,T Podobnik,O Podobrin, M E Pol,G Polok,P Poropat,Valery Pozdnyakov,P Privitera,N Pukhaeva, Antonio Pullia, D Radojicic,S Ragazzi,H Rahmani, P N Ratoff, A L Jr Read,M Reale,P Rebecchi, N Redaelli,M Regler,Donald Reid,R Reinhardt,P Renton,L K Resvanis,F Richard,James A Richardson,J Ridky,G Rinaudo, O Rohne,A Romero, P Ronchese,L Roos,E I Rosenberg,P Roudeau,T Rovelli,V Ruhlmannkleider, Alvaro Ruiz,K Rybicki,H Saarikko,Y Sacquin, A Sadovskii,O Sahr, G Sajot, J Salt, M Sannino, Hans R Schneider,U Schwickerath,M A E Schyns, G Sciolla, F Scuri,P Seager,Yu N Sedykh,A M Segar,A Seitz,R Sekulin,L Serbelloni,R C Shellard, P Siegrist,R Silvestre, F Simonetto,A N Sissakian,B Sitar,T B Skaali,G Smadja, N Smirnov,Olga Smirnova,G R Smith, O V Solovyanov,R Sosnowski,D Souzasantos,Tz Spassoff, E Spiriti,P Sponholz,S Squarcia,D Stampfer,C Stanescu,S Stanic, S Stapnes,I Stavitski,K Stevenson, A Stocchi,Josef Strauss,R Strub,B Stugu,M Szczekowski,M Szeptycka,Tommaso Tabarelli De Fatis,J P Tavernet, O G Chikilev,F Tegenfeldt,F Terranova,J P Thomas,A Tilquin,L G Tkatchev,Todor D Todorov,S Todorova, A Tomaradze,B Tome,A Tonazzo,L Tortora,G Transtromer, D Treille,G Tristram,A Trombini,C Troncon, A Tsirou,M L Turluer,I A Tyapkin, M Tyndel,S Tzamarias, B Uberschar,O Ullaland,V A Uvarov,Giovanna Valenti,E Vallazza, C J Van Der Velde,W K Van Doninck,A Van Lysebetten,N Vassilopoulos, G Vegni,L Ventura,W Venus, F Verbeure,M Verlato,L S Vertogradov, D Vilanova,P Vincent,Ljubinka Vitale, E Vlasov,A S Vodopyanov, V Vrba, H Wahlen, Ch Walck,P Weilhammer,C Weiser,A M Wetherell, D Wicke,J H Wickens,M Wielers,G Wilkinson,W S C Williams,Michael Winter,M Witek, T Wlodek,J I Yi,Kenneth Mankam Yip,O Yushchenko,F Zach,A V Zaitsev, A Zalewskabak, P Zalewski, D Zavrtanik,E Zevgolatakos,N I Zimin,G C Zucchelli, G Zumerle

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS（1997）

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摘要

A study of the channel e(+)e(-) --> mu(+)mu(-)gamma ISR, where gamma ISR is an initial state radiation photon, is presented using data collected by the DELPHI experiment from 1991 to 1994. The total cross-section at effective annihilation: energies (root s') below the Z(0) peak is obtained by using the events with relatively hard initial state radiative photon(s) (E gamma > 1 GeV). The differential cross-section as a function of the muon polar production angle is also determined in order eo extract the forward-backward asymmetries for the reaction e(+)e(-) --> mu(+)mu(-) at energies root s' between 20 and 87 GeV. The ratio of the helicity cross-sections sigma LL+sigma RR/sigma RL+sigma LR, where the two subscripts stand for the helicities of the incoming e(-) and outgoing mu(-) respectively, is extracted from the differential cross-sections in order to test the Standard Model and to look for new physics near 80 GeV. No deviations from the Standard Model were found.

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data collection,new physics,particle physics,cross section,standard model

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