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Search for neutral heavy leptons produced in Z decays

Title:	Search for neutral heavy leptons produced in Z decays
Authors:	Abreu P; Adam W; Adye T; Ajinenko I; Alekseev GD; Alemany R; Allport PP; Almehed S; Amaldi U; Amato S; Andreazza A; Andrieux ML; Antilogus P; Apel WD; Asman B; Augustin JE; Augustinus A; Baillon P; Bambade P; Barao F; Barbi M; Barbiellini G; Bardin DY; Barker G; Baroncelli A; Barring O; Barrio JA; Bartl W; Bates MJ; Battaglia M; Baubillier M; Baudot J; Becks KH; Begalli M; Beilliere P; Belokopytov Y; Benvenuti AC; Berggren M; Bertini D; Bertrand D; Besancon M; Bianchi F; Bigi M; Bilenky MS; Billoir P; Bizouard MA; Bloch D; Blume M; Bolognese T; Bonesini M; Bonivento W; Booth PSL; Bosio C; Botner O; Boudinov E; Bouquet B; Bourdarios C; Bowcock TJV; Bozzo M; Branchini P; Brand KD; Brenke T; Brenner RA; Bricman C; Brown RCA; Bruckman P; Brunet JM; Bugge L; Buran T; Burgsmueller T; Buschmann P; Cabrera S; Caccia M; Calvi M; Rozas MVC; Camporesi T; Canale V; Canepa M; Cankocak K; Cao F; Carena F; Carroll L; Caso C; Gimenez MVC; Cattai A; Cavallo FR; Chabaud V; Chapkin M; Charpentier P; Chaussard L; Checchia P; Chelkov GA; Chen M; Chierici R; Chliapnikov P; Chochula P; Chorowicz V; Chudoba J; Cindro V; Collins P; Contri R; Cortina E; Cosme G; Cossutti F; Cowell JH; Crawley HB; Crennell D; Crosetti G; Maestro JC; Czellar S; DahlJensen E; Dahm J; Dalmagne B; Dam M; Damgaard G; Dauncey PD; Davenport M; DaSilva W; Defoix C; Deghorain A; DellaRicca G; Delpierre P; Demaria N; DeAngelis A; DeBoer W; DeBrabandere S; DeClercq C; DelaVaissiere C; DeMin A; DePaula L; DeSaintJean C; Dijkstra H; DiCiaccio L; DiDiodato A; Djama F; Djannati A; Dolbeau J; Doroba K; Dracos M; Drees J; Drees KA; Dris M; Durand JD; Edsall D; Ehret R; Eigen G; Ekelof T; Ekspong G; Elsing M; Engel JP; Erzen B; Santo ME; Falk E; Fassouliotis D; Feindt M; Fenyuk A; Ferrer A; Fichet S; Filippas TA; Firestone A; Fischer PA; Foeth H; Fokitis E; Fontanelli F; Formenti F; Franek B; Frenkiel P; Fries DC; Frodesen AG; Fruhwirth R; FuldaQuenzer F; Fuster J; Galloni A; Gamba D; Gandelman M; Garcia C; Garcia J; Gaspar C; Gasparini U; Gavillet P; Gazis EN; Gele D; Gerber JP; Gerdyukov L; Gokieli R; Golob B; Gopal G; Gorn L; Gorski M; Gouz Y; Gracco V; Graziani E; Green C; Grefrath A; Gris P; Grosdidier G; Grzelak K; Gumenyuk S; Gunnarsson P; Gunther M; Guy J; Hahn F; Hahn S; Hajduk Z; Hallgren A; Hamacher K; Harris FJ; Hedberg V; Henriques R; Hernandez JJ; Herquet P; Herr H; Hessing TL; Heuser JM; Higon E; Hilke HJ; Hill TS; Holmgren SO; Holt PJ; Holthuizen D; Hoorelbeke S; Houlden M; Hrubec J; Huet K; Hultqvist K; Jackson JN; Jacobsson R; Jalocha P; Janik R; Jarlskog C; Jarlskog G; Jarry P; JeanMarie B; Johansson EK; Jonsson L; Jonsson P; Joram C; Juillot P; Kaiser M; Kapusta F; Karafasoulis K; Karlsson M; Karvelas E; Katsanevas S; Katsoufis EC; Keranen R; Khokhlov Y; Khomenko BA; Khovanski NN; King B; Kjaer NJ; Klapp O; Klein H; Klovning A; Kluit P; Koene B; Kokkinias P; Koratzinos M; Korcyl K; Kostioukhine V; Kourkoumelis C; Kouznetsov O; Krammer M; Kreuter C; Kronkvist I; Krumstein Z; Krupinski W; Kubinec P; Kucewicz W; Kurvinen K; Lacasta C; Laktineh I; Lamsa JW; Lanceri L; Lane DW; Langefeld P; Lapins V; Laugier JP; Lauhakangas R; Leder G; Ledroit F; Lefebure V; Legan CK; Leitner R; Lemonne J; Lenzen G; Lepeltier V; Lesiak T; Libby J; Liko D; Lindner R; Lipniacka A; Lippi I; Loerstad B; Loken JG; Lopez JM; Loukas D; Lutz P; Lyons L; MacNaughton J; Maehlum G; Mahon JR; Maio A; Malmgren TGM; Malychev V; Mandl F; Marco J; Marco R; Marechal B; Margoni M; Marin JC; Mariotti C; Markou A; MartinezRivero C; MartinezVidal F; Garcia SMI; Masik J; Matorras F; Matteuzzi C; Matthiae G; Mazzucato M; McCubbin M; McKay R; McNulty R; Medbo J; Merk M; Meroni C; Meyer S; Meyer WT; Michelotto M; Migliore E; Mirabito L; Mitaroff WA; Mjoernmark U; Moa T; Moeller R; Moenig K; Monge MR; Morettini P; Mueller H; Muenich K; Mulders M; Mundim LM; Murray WJ; Muryn B; Myatt G; Naraghi F; Navarria FL; Navas S; Nawrocki K; Negri P; Nemecek S; Neumann W; Nicolaidou R; Nielsen BS; Nieuwenhuizen M; Nikolaenko V; Niss P; Nomerotski A; Normand A; OberschulteBeckmann W; Obraztsov V; Olshevski AG; Onofre A; Orava R; Osterberg K; Ouraou A; Paganini P; Paganoni M; Pages P; Pain R; Palka H; Papadopoulou TD; Papageorgiou K; Pape L; Parkes C; Parodi F; Passeri A; Pegoraro M; Peralta L; Pernegger H; Pernicka M; Perrotta A; Petridou C; Petrolini A; Petrovyck M; Phillips HT; Piana G; Pierre F; Pimenta M; Podobnik T; Podobrin O; Pol ME; Polok G; Poropat P; Pozdniakov V; Privitera P; Pukhaeva N; Pullia A; Radojicic D; Ragazzi S; Rahmani H; Ratoff PN; Read AL; Real M; Rebecchi P; Redaelli NG; Regler M; Reid D; Reinhardt R; Renton PB; Resvanis LK; Richard F; Richardson J; Ridky J; Rinaudo G; Ripp I; Romero A; Roncagliolo I; Ronchese P; Roos L; Rosenberg EI; Roudeau P; Rovelli T; Ruckstuhl W; RuhlmanKleider V; Ruiz A; Rybicki K; Saarikko H; Sacquin Y; Sadovsky A; Sahr O; Sajot G; Salt J; Sanchez J; Sannino M; Schimmelpfennig M; Schneider H; Schwickerath U; Schyns MAE; Sciolla G; Seager P; Sedykh Y; Segar AM; Seitz A; Sekulin R; Serbelloni L; Shellard RC; Siegrist P; Silvestre R; Simonetti S; Simonetto F; Sisakian AN; Sitar B; Skaali TB; Smadja G; Smirnov N; Smirnova O; Smith GR; Sosnowski R; SouzaSantos D; Spassov T; Spiriti E; Sponholz P; Squarcia S; Stampfer D; Stanescu C; Stanic S; Stapnes S; Stavitski I; Stevenson K; Stocchi A; Strauss J; Strub R; Stugu B; Szczekowski M; Szeptycka M; Tabarelli T; Tavernet JP; Tchikilev O; Thomas J; Tilquin A; Timmermans J; Tkatchev LG; Todorov T; Todorova S; Toet DZ; Tomaradze A; Tonazzo A; Tortora L; Transtromer G; Treille D; Tristram G; Trombini A; Troncon C; Tsirou A; Turluer ML; Tyapkin IA; Tyndel M; Tzamarias S; Ueberschaer B; Ullaland O; Uvarov V; Valenti G; Vallazza E; Velde CV; vanApeldoorn GW; vanDam P; vanDoninck WK; vanEldik J; vanLysebetten A; Vassilopoulos N; Vegni G; Ventura L; Venus W; Verbeure F; Verlato M; Vertogradov LS; Vilanova D; Vincent P; Vitale L; Vlasov E; Vodopyanov AS; Vrba V; Wahlen H; Walck C; Weierstall M; Weilhammer P; Weiser C; Wetherell AM; Wicke D; Wickens JH; Wielers M; Wilkinson GR; Williams WSC; Winter M; Witek M; Wlodek T; Woschnagg K; Yip K; Yuschenko O; Zach F; Zaitsev A; Zalewska A; Zalewski P; Zavrtanik D; Zevgolatakos E; Zimin NI; Zito M; Zontar D; Zucchelli GC; Zumerle G.; DE LOTTO, Barbara; SCURI, Fabrizio
Contributors:	Abreu, P; Adam, W; Adye, T; Ajinenko, I; Alekseev, Gd; Alemany, R; Allport, Pp; Almehed, S; Amaldi, U; Amato, S; Andreazza, A; Andrieux, Ml; Antilogus, P; Apel, Wd; Asman, B; Augustin, Je; Augustinus, A; Baillon, P; Bambade, P; Barao, F; Barbi, M; Barbiellini, G; Bardin, Dy; Barker, G; Baroncelli, A; Barring, O; Barrio, Ja; Bartl, W; Bates, Mj; Battaglia, M; Baubillier, M; Baudot, J; Becks, Kh; Begalli, M; Beilliere, P; Belokopytov, Y; Benvenuti, Ac; Berggren, M; Bertini, D; Bertrand, D; Besancon, M; Bianchi, F; Bigi, M; Bilenky, M; Billoir, P; Bizouard, Ma; Bloch, D; Blume, M; Bolognese, T; Bonesini, M; Bonivento, W; Booth, Psl; Bosio, C; Botner, O; Boudinov, E; Bouquet, B; Bourdarios, C; Bowcock, Tjv; Bozzo, M; Branchini, P; Brand, Kd; Brenke, T; Brenner, Ra; Bricman, C; Brown, Rca; Bruckman, P; Brunet, Jm; Bugge, L; Buran, T; Burgsmueller, T; Buschmann, P; Cabrera, S; Caccia, M; Calvi, M; Rozas, Mvc; Camporesi, T; Canale, V; Canepa, M; Cankocak, K; Cao, F; Carena, F; Carroll, L; Caso, C; Gimenez, Mvc; Cattai, A; Cavallo, Fr; Chabaud, V; Chapkin, M; Charpentier, P; Chaussard, L; Checchia, P; Chelkov, Ga; Chen, M; Chierici, R; Chliapnikov, P; Chochula, P; Chorowicz, V; Chudoba, J; Cindro, V; Collins, P
Publication Year:	1997
Collection:	Università degli Studi di Udine: CINECA IRIS
Description:	Weak isosinglet Neutral Heavy Leptons (nu(m)) have been searched for using data collected by the DELPHI detector corresponding to 3.3 x 10(6) hadronic Z(0) decays at LEP1. Four separate searches have been performed, for short-lived nu(m) production giving monojet or acollinear jet topologies, and for long-lived nu(m) giving detectable secondary vertices or calorimeter clusters, No indication of the existence of these particles has been found, leading to an upper limit for the branching ratio BR(Z(0) --> nu(m)) of about 1.3 x 10(-6) at 95% confidence level for nu(m) masses between 3.5 and 50 GeV/c(2). Outside this range the limit weakens rapidly with the nu(m) mass. The results are also interpreted in terms of Limits for the single production of excited neutrinos.
Document Type:	article in journal/newspaper
Language:	unknown
Relation:	info:eu-repo/semantics/altIdentifier/wos/WOS:A1997WW23400005; volume:74; issue:1; firstpage:57; lastpage:71; numberofpages:15; journal:ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS; http://hdl.handle.net/11390/884559
DOI:	10.1007/s002880050370
Availability:	http://hdl.handle.net/11390/884559; https://doi.org/10.1007/s002880050370
Accession Number:	edsbas.8BBC75BA
Database:	BASE