Search for charginos and neutralinos in $e^+ e^-$ collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles European Physical Journal C: Particles and Fields Year : 1999

Search for charginos and neutralinos in $e^+ e^-$ collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space

R. Barate (1) , D. Decamp (1) , P. Ghez (1) , C. Goy (1) , S. Jezequel (1) , J.P. Lees (1) , F. Martin (1) , E. Merle (1) , M.N. Minard (1) , J.Y. Nief (1) , B. Pietrzyk (1) , R. Alemany , M P. Casado , M. Chmeissani , Jm. Crespo , M. Delfino , E. Fernandez , M. Fernandez-Bosman , L. Garrido , E. Graughs , A. Juste , M. Martmnez , G. Merino , R. Miquel , L M. Mir , P. Morawitz , A. Pacheco , I C. Park , I. Riu , F. Sanchez , A. Colaleo , D. Creanza , M. de Palma , G. Gelao , G. Iaselli , G. Maggi , M. Maggi , S. Nuzzo , A. Ranieri , G. Raso , F. Ruggieri , G. Selvaggi , L. Silvestris , A. Tricomi , G. Zito , X. Huang , Jiali Lin , Q. Ouyang , T. Wang , Y. Xie , R. Xu , S. Xue , J. Zhang , L. Zhang , W. Zhao , D. Abbaneo , U. Becker , G. Boix , M. Cattaneo , V. Ciulli , G. Dissertori , H. Drevermann , R W. Forty , M. Frank , F. Gianotti , a W. Halley , J B. Hansen , J. Harvey , P. Janot , B. Jost , I. Lehraus , O. Leroy , C. Loomis , P. Maley , P. Mato , A. Minten , A. Moutoussi , F. Ranjard , L. Rolandi , D. Rousseau , D. Schlatter , M. Schmitt , O. Schneider , W. Tejessy , F. Teubert , I R. Tomalin , E. Tournefier , M. Vreeswijk , Ziad Zj Ajaltouni (2) , F. Badaud (2) , G. Chazelle (2) , O. Deschamps (2) , S. Dessagne (2) , Alain Falvard (2) , C. Ferdi (2) , Pascal Gay (2) , C. Guicheney (2) , Pierre Henrard (2) , J. Jousset (2) , B. Michel (2) , S. Monteil (2) , Jean-Claude Montret (2) , D. Pallin (2) , Pascal Perret (2) , F. Podlyski (2) , J D. Hansen , J R. Hansen , P H. Hansen , B S. Nilsson , B. Rensch , G. Daskalakis , A. Kyriakis , C. Markou , E. Simopoulou , A. Vayaki , A. Blondel (3) , Jc. Brient (3) , F. Machefert (3) , A. Rougi (3) , M. Swynghedauw (3) , R. Tanaka (3) , A. Valassi (3) , H. Videau (3) , E. Focardi , G. Parrini , K. Zachariadou , R. Cavanaugh , M. Corden , C. Georgiopoulos , A. Antonelli , G. Bencivenni , G. Bologna , F. Bossi , P. Campana , G. Capon , F. Cerutti , V. Chiarella , P. Laurelli , G. Mannocchi , F. Murtas , G P. Murtas , L. Passalacqua , M. Pepi-Altarelli , M. Chalmers , L. Curtis , J G. Lynch , P. Negus , V. O'Shea , B. Raeven , C. Raine , D. Smith , P. Teixeira-Dias , a S. Thompson , J J. Ward , S. Dhamotharan , C. Geweniger , P. Hanke , G. Hansper , V. Hepp , E E. Kluge , A. Putzer , J. Sommer , K. Tittel , S. Werner , M. Wunsch , R. Beuselinck , D M. Binnie , W. Cameron , P J. Dornan , M. Girone , S. Goodsir , N. Marinelli , E B. Martin , J. Nash , J. Nowell , J K. Sedgbeer , P. Spagnolo , E. Thomson , M D. Williams , V M. Ghete , P. Girtler , E. Kneringer , D. Kuhn , G. Rudolph , a P. Betteridge , C K. Bowdery , P G. Buck , P. Colrain , G. Crawford , G. Ellis , a J. Finch , F. Foster , G. Hughes , R W L. Jones , N A. Robertson , M. Williams , P. van Gemmeren , I. Giehl , F. Hvlldorfer , C. Hoffmann , K. Jakobs , K. Kleinknecht , M. Krvcker , G. Quast , B. Renk , E. Rohne , H G. Sander , S. Schmeling , H. Wachsmuth , C. Zeitnitz , T. Ziegler , J.J. Aubert (4) , C. Benchouk (4) , A. Bonissent (4) , J. Carr (4) , P. Coyle (4) , A. Ealet (4) , D. Fouchez (4) , F. Motsch (4) , P. Payre (4) , M. Talby (4) , M. Thulasidas (4) , A. Tilquin (4) , M. Aleppo , M. Antonelli , F. Ragusa , R. Berlich , H. Dietl , G. Ganis , C. Mannert , W. Mdnner , H G. Moser , S. Schael , R. Settles , H. Seywerd , H. Stenzel , W. Wiedenmann , G. Wolf , J. Boucrot (5) , O. Callot (5) , S. Chen (5) , M. Davier (5) , L. Duflot (5) , J F. Grivaz (5) , P. Heusse (5) , A. Jacholkowska (5) , M. Kado (5) , D W. Kim (5) , J. Lefrangois (5) , L. Serin (5) , J J. Veillet (5) , I. Videau (5) , J B. Devivie de Rigie (5) , D. Zerwas (5) , P. Azzurri , G. Bagliesi , S. Bettarini , T. Boccali , C. Bozzi , G. Calderini , R. Dell'Orso , R. Fantechi , I. Ferrante , A. Giassi , A. Gregorio , F. Ligabue , A. Lusiani , P S. Marrocchesi , A. Messineo , F. Palla , G. Rizzo , G. Sanguinetti , G. Sguazzoni , R. Tenchini , C. Vannini , A. Venturi , P G. Verdini , G A. Blair , J T. Chambers , J. Coles , G. Cowan , M G. Green , D E. Hutchcroft , L T. Jones , T. Medcalf , J A. Strong , J H. von Wimmersperg-Toeller , D R. Botterill , R W. Clifft , T R. Edgecock , P R. Norton , J C. Thompson , a E. Wright , B. Bloch-Devaux , P. Colas , B. Fabbro , G. Faof , E. Langon , M C. Lemaire , E. Locci , P. Pirez , H. Przysiezniak , J. Rander , J F. Renardy , A. Rosowsky , A. Trabelsi , B. Tuchming , B. Vallage , S N. Black , J H. Dann , H Y. Kim , N. Konstantinidis , a M. Litke , M A. Mcneil , G. Taylor , C N. Booth , S L. Cartwright , F. Combley , Pn. Hodgson , M S. Kelly , M H. Lehto , L F. Thompson , K. Affholderbach , A. Bvhrer , S. Brandt , J. Foss , C. Grupen , A. Misiejuk , G. Prange , U. Sieler , L. Smolik , F. Stephan , G. Giannini , J. Putz , J E. Rothberg , S. Wasserbaech , R W. Williams , S R. Armstrong , E. Charles , P. Elmer , D P S. Ferguson , Y. Gao , S. Gonzalez , T C. Greening , O J. Hayes , H. Hu , S. Jin , G. Mamier , P A. Mcnamara , J M. Nachtman , J. Nielsen , W. Orejudos , y B. Pan , Y. Saadi , I J. Scott , M. Vogt , J. Walsh , S L. Wu , X. Wu , G. Zobernig
C. Goy
R. Alemany
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M P. Casado
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M. Chmeissani
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Jm. Crespo
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M. Delfino
E. Fernandez
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M. Fernandez-Bosman
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L. Garrido
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E. Graughs
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A. Juste
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M. Martmnez
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G. Merino
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R. Miquel
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L M. Mir
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P. Morawitz
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A. Pacheco
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I C. Park
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I. Riu
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F. Sanchez
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A. Colaleo
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D. Creanza
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M. de Palma
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G. Gelao
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G. Iaselli
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G. Maggi
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M. Maggi
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S. Nuzzo
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A. Ranieri
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G. Raso
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F. Ruggieri
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G. Selvaggi
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L. Silvestris
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A. Tricomi
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G. Zito
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X. Huang
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Jiali Lin
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Q. Ouyang
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T. Wang
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Y. Xie
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R. Xu
S. Xue
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J. Zhang
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L. Zhang
W. Zhao
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D. Abbaneo
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U. Becker
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G. Boix
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M. Cattaneo
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V. Ciulli
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G. Dissertori
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H. Drevermann
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R W. Forty
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M. Frank
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F. Gianotti
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a W. Halley
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J B. Hansen
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J. Harvey
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P. Janot
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B. Jost
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I. Lehraus
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O. Leroy
C. Loomis
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P. Maley
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P. Mato
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A. Minten
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A. Moutoussi
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F. Ranjard
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L. Rolandi
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D. Rousseau
D. Schlatter
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M. Schmitt
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O. Schneider
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W. Tejessy
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F. Teubert
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I R. Tomalin
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E. Tournefier
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M. Vreeswijk
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J D. Hansen
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J R. Hansen
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P H. Hansen
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B S. Nilsson
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B. Rensch
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G. Daskalakis
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A. Kyriakis
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C. Markou
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E. Simopoulou
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A. Vayaki
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E. Focardi
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G. Parrini
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K. Zachariadou
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R. Cavanaugh
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M. Corden
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C. Georgiopoulos
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A. Antonelli
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G. Bencivenni
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G. Bologna
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F. Bossi
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P. Campana
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G. Capon
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F. Cerutti
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M. Chalmers
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L. Curtis
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J G. Lynch
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P. Negus
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V. O'Shea
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B. Raeven
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C. Raine
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D. Smith
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P. Teixeira-Dias
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a S. Thompson
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J J. Ward
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S. Dhamotharan
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C. Geweniger
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P. Hanke
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G. Hansper
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V. Hepp
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E E. Kluge
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A. Putzer
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J. Sommer
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K. Tittel
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S. Werner
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M. Wunsch
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D M. Binnie
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W. Cameron
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P J. Dornan
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M. Girone
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S. Goodsir
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N. Marinelli
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E B. Martin
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J. Nash
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J. Nowell
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J K. Sedgbeer
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P. Spagnolo
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E. Thomson
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M D. Williams
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V M. Ghete
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P. Girtler
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E. Kneringer
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a P. Betteridge
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C K. Bowdery
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P G. Buck
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P. Colrain
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G. Crawford
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G. Ellis
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a J. Finch
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F. Foster
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G. Hughes
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R W L. Jones
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N A. Robertson
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T. Ziegler
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M. Aleppo
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M. Antonelli
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F. Ragusa
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R. Berlich
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H. Dietl
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G. Ganis
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H G. Moser
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S. Schael
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R. Settles
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H. Seywerd
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H. Stenzel
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W. Wiedenmann
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G. Wolf
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P. Azzurri
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G. Bagliesi
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S. Bettarini
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T. Boccali
C. Bozzi
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G. Calderini
R. Dell'Orso
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R. Fantechi
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I. Ferrante
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A. Giassi
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A. Gregorio
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F. Ligabue
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A. Lusiani
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P S. Marrocchesi
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A. Messineo
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F. Palla
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G. Rizzo
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G. Sanguinetti
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G. Sguazzoni
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R. Tenchini
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C. Vannini
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P G. Verdini
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a M. Litke
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K. Affholderbach
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J. Foss
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C. Grupen
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A. Misiejuk
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G. Prange
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U. Sieler
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L. Smolik
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F. Stephan
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G. Giannini
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J. Putz
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J E. Rothberg
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S. Wasserbaech
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R W. Williams
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S R. Armstrong
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E. Charles
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P. Elmer
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D P S. Ferguson
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S. Gonzalez
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T C. Greening
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O J. Hayes
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G. Mamier
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P A. Mcnamara
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J M. Nachtman
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J. Nielsen
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W. Orejudos
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y B. Pan
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Y. Saadi
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I J. Scott
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M. Vogt
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J. Walsh
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S L. Wu
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X. Wu
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  • PersonId : 829304
G. Zobernig
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Abstract

Searches for charginos and neutralinos are performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies near 183 GeV. In these searches, it is assumed that R-parity is conserved and that the lightest neutralino is the LSP. No evidence of a signal is observed in the 57 pb-1 accumulated, which excludes chargino and associated neutralino production up to the kinematic limit over large regions of the MSSM parameter space. Under the assumptions of common gaugino and common sfermion masses at the unification scale, the interplay between the chargino, neutralino and slepton exclusions allows a lower limit of 27 GeV/c2 to be set on the mass of the lightest neutralino. Tighter constraints on the MSSM parameter space are obtained using in addition exclusions in the Higgs sector. Finally, the results are interpreted within the framework of minimal supergravity.
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Dates and versions

in2p3-00003573 , version 1 (04-04-2000)

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  • HAL Id : in2p3-00003573 , version 1

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R. Barate, D. Decamp, P. Ghez, C. Goy, S. Jezequel, et al.. Search for charginos and neutralinos in $e^+ e^-$ collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space. European Physical Journal C: Particles and Fields, 1999, 11, pp.193-216. ⟨in2p3-00003573⟩
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