Search for sleptons in e + e − collisions at √ s = 183 to 189 GeV
Pedro Abreu,Wolfgang Adam,T. Adye,Petar Adzic,I. V. Ajinenko, Zoltan Albrecht,Thomas Alderweireld, Gennadiy Alekseev,Regina Alemany,Thomas Allmendinger,Phillip Allport,S. Almehed,Ugo Amaldi, Nicola Carlo Amapane,Sandra Amato,E. G. Anassontzis, Patrik Urban Andersson,Attilio Andreazza,Sofia Andringa,N. Anjos,Pierre Antilogus,W-D. Apel,Y. Arnoud,Barbro Åsman,J-E. Augustin,Andre Augustinus,Paul Baillon,Alessandro Ballestrero, Ph. Bambade,F. Barao,Guido Barbiellini,R. Barbier, Dimitri Yuri Bardin,G. J. Barker,Antonio Baroncelli, Maurizio Battaglia, Mélanie Baubillier,K-H. Becks,Márcia Begalli,A. Behrmann,Yu. V. Belokopytov,Nektarios Benekos,Alberto C Benvenuti,Corinne Bérat, Mikael Olsson Berggren,Lisa Berntzon,D. Bertrand,Marc Besancon,Nathalie Besson,M. S. Bilenky,M-A. Bizouard,Daniel D. Bloch, Henk M Blom, Linda Bol,Maurizio Bonesini,M. Boonekamp,P. S. L. Boóth, Gleb Borisov,C. Bosio,Olga Botner,E. Boudinov, Benjamin Bouquet,Claire Bourdarios,T. J. V. Bowcock,I. R. Boyko, Ivan Božović,Marco Bozzo,Marko Bračko,Paolo Branchini,Richard Brenner,P. Bruckman,J-M. Brunet,Lars Bugge, Pia Buschmann,Massimo Caccia,Marta Calvi,Tiziano Camporesi,Vincenzo Canale,Francesco Carena,Linda J. Carroll,Carlo Caso,M. V. Castillo Gimenez,Ariella Cattai,Francesca Romana Cavallo,Ph. Charpentier,P Checchia,Gueorgui Chelkov,Roberto Chierici,P. V. Chliapnikov,Peter Chochula, Valérie Chorowicz,Jan Chudoba, Krzysztof Cieślik,Paula Collins,R. Contri, Eduardo Cortina,G. Cosme,Fabio Cossutti,Maria J. F. Costa,H. B. Crawley,D J Crennell,J. Croix,Giovanni Crosetti, Javier Cuevas Maestro,Sándor Czellár,J. D’Hondt,Josep Dalmau,Martyn Davenport,Wilfrid da Silva,Giuseppe Della Ricca, P A Delpierre,Natale Demaria,Alessandro D. de Angelis,Wim de Boer,Charles De Clercq,Barbara De Lotto,Alberto De Min,Leandro De Paula,Hans Dijkstra,Lucía Di Ciaccio,Krzysztof Doroba,Marcos Dracos, Jürgen Drees,Manolis Dris,Gerald Eigen,Tord Ekelőf,Mattias Ellert,Markus Elsing,J-P. Engel,M. C. Espirito Santo,Georgios Fanourakis,Dimitrios Fassouliotis,Michael Feindt,J. Fernandez, Antonio Tur Ferrer, Esther Ferrer-Ribas,Fabrizio Ferro,Alexander Firestone, Uwe Flagmeyer,H. Foeth,E. Fokitis,Flavio Fontanelli, Benjamin Franek,A. G. Frodesen, Rudolf Konrad Fruhwirth,F. Fulda-Quenzer,Juan Manuel Fernández Fuster,A. Galloni,Diego Gamba,Stuart D. Gamblin,Miriam Gandelman,Christophe Garcia,C. Gaspar, Merse Elod Gaspar,Ugo Gasparini,Ph. Gavillet,Evangelos N. Gazis,Denis Gelé,Theodoros Geralis,L. N. Gerdyukov,Nabil Ghodbane, Inigo San Gil,Frank Glege,Ryszard Gokieli, Blaž Golob,Guillelmo Gomez-Ceballos,Paulo S. Goncalves,I. Gonzalez Caballero, Gian P Gopal,L. S. Gorn,Yu. P. Gouz,Vincent L. Gracco,J. Grahl,Enrico Graziani,Gilbert Grosdidier,K. Grzelak,Julien Guy,C. Haag,F. Hahn,S. R. Hahn,S. Haider,Allan Hallgren,Klaus Hamacher, J orgen Beck Hansen,Fredric J. Harris, Stephan Haug, Felix Hauler,Vincent Hedberg, Susanna Heising, J. J. Guadalupe Hernandez, Ph. Herquet,Holger Herr, Oliver Hertz, Enrique. Higon,S-O. Holmgren, Peter J. Holt,S. Hoorelbeke,M. A. Houlden,Josef Hrubec,Gareth Hughes,Klas Hultqvist,J. N. Jackson,R. Jacobsson,Pawel Jalocha,Ch. Jarlskog,Goeran Jarlskog,P. Jarry,B. Jean-Marie,Daniel Jeans,E. K. Johansson,Patrik Jonsson,Christian Joram,Pierre Juillot,L. Jungermann,Frederic Kapusta,K. Karafasoulis,Stavros Katsanevas, Elias Constantine Katsoufis,R. Keranen, Gabrijel Kernel,Borut Paul Kersevan,Yu. N. Khokhlov,B. A. Khomenko,N. N. Khovanski, Ari Kiiskinen,B. Tom King,A. Kinvig, Niels Jorgen Kjaer,Oliver Klapp,Peter Kluit, Panos Kokkinias, V. V. Kostioukhine,Christine Kourkoumelis,O. L. Kouznetsov,Manfred Krammer,E. Križnič,Z. V. Krumstein, Peter Kubinec,Marcin Kucharczyk, Joanna Kurowska,J. W. Lamsa,J-P. Laugier,Gerhard Leder,Fabienne Ledroit, Leena Leinonen,A. Leisos,Rupert Leitner,Georg Lenzen,Vincent Lepeltier,Tadeusz Lesiak,Morgan Lethuillier,Jim Libby,Wolfgang Liebig,Dietrich Liko,Anna Lipniacka,Ivano Lippi, James Loken,J. Helder Lopes, J. Muñoz López,Ricardo Lopez-Fernandez,Demetrios Loukas, Peter H. Lutz, Lisa Lyons,J. Macnaughton,J. R. P. Mahon,Amélia Maio,Abid Malek,Stavros Maltezos,V. Malychev,Franz Mandl,Jesus Marco,Roland De Marco,B. Maréchal,Martino Margoni,J-C. Marin,Chiara Mariotti,Athanasios Markou,C. Martínez-Rivero,Salvador Marti i Garcia,Jiří Mašík,N. Mastroyiannopoulos,Francisco del Piñal Matorras,Clara Matteuzzi,Giorgio Matthiae, Federica Mazzucato,Mirco Mazzucato,R. Mc Kay,R. Mc Nulty,G. Mc Pherson, Eric Merle,Chiara Meroni,W Thomas Meyer,Ernesto Migliore,Laurent Mirabito,Winfried A. Mitaroff,Ulf Mjörnmark,T. Moa, Marcin Moch,K. Mönig,Maria Roberta Monge,J. Montenegro,Danielle Moraes,Paolo Morettini,G. Morton,Ulrich Mueller,Kirsten Muenich,Martijn Mulders,L. M. Mundim, William J. Murray,Bogdan Muryn,Gerald Myatt, Terje Myklebust,M. Nassiakou,Francesco Navarria,Krzysztof Nawrocki, Pablo Negri,Stanislav Němeček,Niko Neufeld,Rosy Nicolaidou, Piotr Nieżurawski,M. Nikolenko,V P Nomokonov, Anders Nygren,Vladimir Obraztsov, Alexander Olshevski,António Onofre,Risto Orava,K. Osterberg,Ahmimed Ouraou,Arantza Oyanguren,M. Paganoni, Simona Paiano,Reynald Pain, Rafael Rothganger de Paiva,J. P. Palacios,Henryk Palka,Th. D. Papadopoulou,Leo Pape,Christopher Parkes,Fabrizio Parodi,Ulrich Parzefall,Antonio Passeri,Oliver Passon, Tomas J Pavel,Matteo Pegoraro, Liliana Peralta,Victoria Perepelitsa,Manfred Pernicka,Andrea Perrotta,Ch. Petridou,A. Petrolini, Howard Phillips, Francois St. Pierre,Mário Pimenta, Enrico Piotto,Tomaž Podobnik,Vincent Poireau,M. E. Pol,G. Polok,P. Poropat, Valeriy Pozdniakov,Paolo Privitera,Nelli Pukhaeva,A Pullia, Danica Radojicic,Stefano Ragazzi,Hossein Rahmani,Peter Ratoff,Alexander L. Read,P. Rebecchi,Nicola Redaelli, Meinhard Regler,J. Rehn,D. W. Reid,Richard Reinhardt,Peter B. Renton,L. K. Resvanis,Fabrice Richard,Jan Řídký, Giuseppe Rinaudo,Isabelle Ripp-Baudot,Aldo H Romero,Paolo Ronchese,E. I. Rosenberg, Peter Rosinsky,Tiziano Rovelli, Vanina Ruhlmann-Kleider, A. Lopez Ruiz,H. Saarikko, Yu Sacquin,A. Sadovsky,G. Sajot, Laura Salmi,José Salt,Dimitrios Sampsonidis,Mario Sannino,Aurore Savoy-Navarro,Christoph Schwanda,Ph. Schwemling, Benjamin Schwering,Ulrich Schwickerath,Fabrizio Scuri,Philip Seager,Yu. R. Sedykh,A. M. Segar,R. L. Sekulin, Giulia Sette,Ronald C. Shellard,Mark Siebel,Luc Simard,Franco Simonetto,A. N. Sisakian,Gérard Smadja,Nikita Smirnov,Oxana Smirnova,Gregory R. Smith,Alexei P. Sokolov,O. V. Solovianov,André Sopczak,R. Sosnowski,Tony Spassov,Eleuterio Spiriti, Sandro Squarcia,Cristian Stanescu,Marcel Michael Stanitzki, Kevin Stevenson,Achille Stocchi,Josef Strauss, Richard Strub,Bjarne Stugu,Marek Szczekowski,M. Szeptycka,T. Tabarelli,Anyes Taffard,Fredrik Tegenfeldt,F. Terranova,Jos Timmermans,N. Tinti,L. G. Tkatchev,M. Tobin,Sarka Todorova,Bernardo Tomé,Alessandra Tonazzo,Luca Tortora,Pablo Tortosa,Daniel Treille,G. Tristram,M. Trochimczuk,Clara Troncon,M-L. Turluer,I. A. Tyapkin, Pavel Tyapkin,Spyros Tzamarias,O. Ullaland,V. A. Uvarov, Ghino Valenti,Erik Vallazza,Catherine Vander Velde,Peter M. van Dam,W. Van den Boeck,Jan van Eldik,Ann Van Lysebetten,Nick van Remortel,Ivo van Vulpen,G. Vegni,Laura Ventura,W A Venus,F. Verbeure,Patrice Verdier,Marco Verlato
semanticscholar（2000）
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摘要
Data taken by the DELPHI experiment at centre-of-mass energies of 183 GeV and 189 GeV with a total integrated luminosity of 212 pb −1 have been used to search for the supersymmetric partners of the electrons, muons, and taus in the context of the Minimal Supersymmetric Standard Model (MSSM). The decay topologies searched for were the direct decay (˜ ℓ → ℓ ˜ χ 0 1), producing acoplanar lepton pairs plus missing energy, and the cascade decay (˜ ℓ → ℓ ˜ χ 0 2 → ℓγ˜χ 0 1), producing acoplanar lepton and photon pairs plus missing energy. The observed number of events is in agreement with Standard Model predictions. The 95% CL excluded mass limits for selectrons, smuons and staus are m ˜ e ≤ 87 GeV/c 2 , m ˜ µ ≤ 80 GeV/c 2 and m ˜ τ ≤ 75 GeV/c 2 , respectively, for values of µ=-200 GeV/c 2 and tanβ=1.5.
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