Search for pair-production of long-lived heavy charged particles in $e^+ e^-$ annihilation - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physics Letters B Year : 1997

Search for pair-production of long-lived heavy charged particles in $e^+ e^-$ annihilation

R. Barate (1) , D. Buskulic (1) , D. Decamp (1) , P. Ghez (1) , C. Goy (1) , J P. Lees (1) , A. Lucotte (1) , M N. Minard (1) , J Y. Nief (1) , B. Pietrzyk (1) , M P. Casado , M. Chmeissani , P. Comas , J M. Crespo , M. Delfino , E. Fernandez , M. Fernandez-Bosman , L. Garrido , A. Juste , M. Martinez , R. Miquel , L M. Mir , S. Orteu , C. Padilla , I C. Park , A. Pascual , J A. Perlas , I. Riu , F. Sanchez , F. Teubert , A. Colaleo , D. Creanza , M. de Palma , G. Gelao , G. Iaselli , G. Maggi , M. Maggi , N. Marinelli , S. Nuzzo , A. Ranieri , G. Raso , F. Ruggieri , G. Selvaggi , L. Silvestris , P. Tempesta , 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 , R. Alemany , a O. Bazarko , U. Becker , P. Bright-Thomas , M. Cattaneo , F. Cerutti , G. Dissertori , H. Drevermann , R W. Forty , M. Frank , R. Hagelberg , J B. Hansen , J. Harvey , P. Janot , B. Jost , E. Kneringer , J. Knobloch , I. Lehraus , G. Lutters , P. Mato , A. Minten , L. Moneta , A. Pacheco , J F. Pusztaszeri , F. Ranjard , G. Rizzo , L. Rolandi , D. Schlatter , M. Schmitt , O. Schneider , W. Tejessy , I R. Tomalin , H. Wachsmuth , A. Wagner , Ziad Zj Ajaltouni (2) , A. Barres (2) , Claudine Boyer (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) , Joseph Proriol (2) , P. Rosnet (2) , J.M. Rossignol (2) , T. Fearnley , J D. Hansen , J R. Hansen , P H. Hansen , B S. Nilsson , B. Rensch , A. Waananen , G. Daskalakis , A. Kyriakis , C. Markou , E. Simopoulou , A. Vayaki , A. Blondel (3) , J C. Brient (3) , F. Machefert (3) , A. Rouge (3) , M. Rumpf (3) , A. Valassi (3) , H. Videau (3) , E. Focardi , G. Parrini , K. Zachariadou , R. Cavanaugh , M. Corden , C. Georgiopoulos , T. Huhn , D E. Jaffe , A. Antonelli , G. Bencivenni , G. Bologna , F. Bossi , P. Campana , G. Capon , D. Casper , V. Chiarella , G. Felici , P. Laurelli , G. Mannocchi , F. Murtas , G P. Murtas , L. Passalacqua , M. Pepe-Altarelli , L. Curtis , S J. Dorris , a W. Halley , I G. Knowles , J G. Lynch , V. O'Shea , C. Raine , J M. Scarr , K. Smith , P. Teixeira-Dias , a S. Thompson , E. Thomson , F. Thomson , R M. Turnbull , C. Geweniger , G. Graefe , P. Hanke , G. Hansper , V. Hepp , E E. Kluge , A. Putzer , M. Schmidt , J. Sommer , K. Tittel , S. Werner , M. Wunsch , R. Beuselinck , D M. Binnie , W. Cameron , P J. Dornan , M. Girone , S. Goodsir , E B. Martin , P. Morawitz , A. Moutoussi , J. Nash , J K. Sedgbeer , a M. Stacey , M D. Williams , P. Girtler , D. Kuhn , G. Rudolph , a P. Betteridge , C K. Bowdery , P. Colrain , G. Crawford , a J. Finch , F. Foster , G. Hughes , R W L. Jones , T. Sloan , E P. Whelan , M I. Williams , C. Hoffmann , K. Jakobs , K. Kleinknecht , G. Quast , B. Renk , E. Rohne , H G. Sander , P. van Gemmeren , C. Zeitnitz , J.J. Aubert (4) , C. Benchouk (4) , A. Bonissent (4) , G. Bujosa (4) , D. Calvet (4) , J. Carr (4) , P. Coyle (4) , C. Diaconu (4) , N. Konstantinidis (4) , O. Leroy (4) , F. Motsch (4) , P. Payre (4) , D. Rousseau (4) , M. Talby (4) , A. Sadouki (4) , M. Thulasidas (4) , A. Tilquin (4) , Karim Trabelsi (4) , M. Aleppo , F. Ragusa , R. Berlich , W. Blum , V. Buscher , H. Dietl , G. Ganis , C. Gotzhein , H. Kroha , G. Lutjens , G. Lutz , W. Manner , H G. Moser , R H. Richter , A. Rosado-Schlosser , S. Schael , R. Settles , H C J. Seywerd , H. Stenzel , W. Wiedenmann , G. Wolf , J. Boucrot , O. Callot , Si Chen , A. Cordier , M. Davier , L. Duflot , J F. Grivaz , P. Heusse , A. Hocker , A. Jacholkowska , M. Jacquet , D W. Kim , F. Le Diberder , J. Lefrancois , a M. Lutz , I. Nikolic , M H. Schune , S. Simion , E. Tournefier , J J. Veillet , I. Videau , D. Zerwas , P. Azzurri , G. Bagliesi , G. Batignani , S. Bettarini , C. Bozzi , G. Calderini , M. Carpinelli , M A. Ciocci , V. Ciulli , R. Dell'Orso , R. Fantechi , I. Ferrante , A. Giassi , A. Gregorio , F. Ligabue , A. Lusiani , P S. Marrocchesi , A. Messineo , F. Palla , G. Sanguinetti , A. Sciaba , P. Spagnolo , J. Steinberger , R. Tenchini , G. Tonelli , C. Vannini , A. Venturi , P G. Verdini , G A. Blair , L M. Bryant , J T. Chambers , Y. Gao , M G. Green , T. Medcalf , P. Perrodo , J A. Strong , J H. von Wimmersperg-Toeller , D R. Botterill , R W. Clifft , T R. Edgecock , S. Haywood , P. Maley , P R. Norton , J C. Thompson , a E. Wright , B. Bloch-Devaux , P. Colas , B. Fabbro , W. Kozanecki , E. Lancon , M C. Lemaire , E. Locci , P. Perez , J. Rander , J F. Renardy , A. Rosowsky , A. Roussarie , J P. Schuller , J. Schwindling , A. Trabelsi , B. Vallage , S N. Black , J H. Dann , H Y. Kim , a M. Litke , M A. Mcneil , G. Taylor , C N. Booth , R. Boswell , C a J. Brew , S L. Cartwright , F. Combley , M S. Kelly , M H. Lehto , W M. Newton , J. Reeve , L F. Thompson , K. Affholderbach , A. Bohrer , S. Brandt , G D. Cowan , J. Foss , C. Grupen , P. Saraiva , L. Smolik , F. Stephan , M. Apollonio , L. Bosisio , R. Della Marina , G. Giannini , B. Gobbo , G. Musolino , J. Putz , J E. Rothberg , S. Wasserbaech , R W. Williams , S R. Armstrong , E. Charles , P. Elmer , D P S. Ferguson , S. Gonzalez , T C. Greening , O J. Hayes , H. Hu , S. Jin , P A. Mcnamara , J M. Nachtman , J. Nielsen , W. Orejudos , y B. Pan , Y. Saadi , I J. Scott , J. Walsh , Lan. Wu Sau , X. Wu , J M. Yamartino , G. Zobernig
C. Goy
M P. Casado
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M. Chmeissani
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P. Comas
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A. Juste
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M. Martinez
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R. Miquel
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L M. Mir
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S. Orteu
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C. Padilla
I C. Park
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F. Teubert
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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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Jiali Lin
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T. Wang
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Y. Xie
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S. Xue
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L. Zhang
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D. Abbaneo
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a O. Bazarko
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U. Becker
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O. Schneider
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I R. Tomalin
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H. Wachsmuth
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J D. Hansen
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B S. Nilsson
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G. Daskalakis
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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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S. Jin
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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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J. Walsh
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Lan. Wu Sau
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X. Wu
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J M. Yamartino
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G. Zobernig
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Abstract

A search for pair-production of long-lived, heavy, singly-charged particles has been performed with data collected by the ALEPH detector at a centre-of-mass energy of 172 GeV. Data at \sqrt{s} = 161, 136, and 130 GeV are also included to improve the sensitivity to lower masses. No candidate is found in the data. A model-independent 95 % confidence level upper limit on the production cross section at 172 GeV of 0.2-0.4 pb is derived for masses between 45 and 86 GeV/c^2. This cross section limit implies, assuming the MSSM, a lower limit of 67 (69) GeV/c^2 on the mass of right- (left-) handed long-lived scalar taus or scalar muons and of 86 GeV/c^2 on the mass of long-lived charginos.

Dates and versions

in2p3-00005698 , version 1 (25-07-2000)

Identifiers

Cite

R. Barate, D. Buskulic, D. Decamp, P. Ghez, C. Goy, et al.. Search for pair-production of long-lived heavy charged particles in $e^+ e^-$ annihilation. Physics Letters B, 1997, 405, pp.379-388. ⟨in2p3-00005698⟩
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