Data collected at centre-of-mass energies from 189 GeV to 202 GeV by the ALEPH detector at LEP corresponding to an integrated luminosity of 411 pb(-1), are analysed in a search for the scalar top in the decay channels (t) over tilde --> c/u chi for small mass differences between the stop and the lightest neutralino. No evidence for deviations from the Standard Model expectation is found and a lower limit of 59 GeV/c(2) is set for the stop mass, independent of the stop to neutralino mass difference and of the stop lifetime. (C) 2000 Elsevier Science B.V. All rights reserved. RI Jones, Roger/H-5578-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; O'Shea, Val/G-1279-2010
Titolo: | Search for a scalar top almost degenerate with the lightest neutralino e(+)e(-) collisions at root s up to 202 GeV |
Autori interni: | |
Data di pubblicazione: | 2000 |
Rivista: | |
Citazione: | Search for a scalar top almost degenerate with the lightest neutralino e(+)e(-) collisions at root s up to 202 GeV / Barate R; Decamp D; Ghez P; Goy C; Jezequel S; Lees JP; Martin F; Merle E; Minard MN; Pietrzyk B; Bravo S; Casado MP; Chmeissani M; Crespo JM; Fernandez E; Fernandez-Bosman M; Garrido L; Grauges E; Lopez J; Martinez M; Merino C; Miquel R; Mir LM; Pacheco A; Paneque D; Ruiz H; Colaleo A; Creanza D; De Filippis N; de Palma M; Iaselli G; Maggi G; Maggi M; Nuzzo S; Ranieri A; Raso G; Ruggieri F; Selvaggi G; Silvestris L; Tempesta P; Tricomi A; Zito G; Huang X; Lin J; Ouyang Q; Wang T; Xie Y; Xu R; Xue S; Zhang J; Zhang L; Zhao W; Abbaneo D; Boix G; Buchmuller O; Cattaneo M; Cerutti F; Dissertori G; Drevermann H; Forty RW; Frank MI; Gianotti F; Greening TC; Hansen JB; Harvey J; Janot P; Jost B; Kado M; Lemaitre V; Maley P; Mato P; Minten A; Moutoussi A; Ranjard F; Rolandi L; Schlatter D; Schmitt M; Schneider O; Spagnolo P; Tejessy W; Teubert F; Tournefier E; Valassi A; Ward JJ; Wright AE; Ajaltouni Z; Badaud F; Chazelle G; Deschamps O; Dessagne S; Falvard A; Gay P; Guicheney C; Henrard P; Jousset J; Michel B; Monteil S; Montret JC; Pallin D; Pascolo JM; Ferret F; Podlyski F; Hansen JD; Hansen JR; Hansen PH; Nilsson BS; Waananen A; Daskalakis G; Kyriakis A; Markou C; Simopoulou E; Vayaki A; Blondel A; Brient JC; Machefert F; Rouge A; Swynghedauw M; Tanaka R; Videau H; Focardi E; Parrini G; Zachariadou K; Antonelli A; Antonelli M; Bencivenni G; Bologna G; Bossi F; Campana P; Capon G; Chiarella V; Laurelli P; Mannocchi G; Murtas F; Murtas GP; Passalacqua L; Pepe-Altarelli M; Chalmers M; Halley AW; Kennedy J; Lynch JG; Negus P; O'Shea V; Raeven B; Smith D; Teixeira-Dias P; Thompson AS; Cavanaugh R; Dhamotharan S; Geweniger C; Hanke P; Hepp V; Kluge EE; Leibenguth G; Putzer A; Tittel K; Werner S; Wunsch M; Beuselinck R; Binnie DM; Cameron W; Davies G; Dornan PJ; Girone M; Marinelli N; Nowell J; Przysiezniak H; Sedgbeer JK; Thompson JC; Thomson E; White R; Ghete VM; Girtler P; Kneringer E; Kuhn D; Rudolph G; Bowdery CK; Buck PG; Clarke DP; Ellis G; Finch AJ; Foster F; Hughes G; Jones RWL; Robertson NA; Smizanska M; Giehl I; Holldorfer F; Jakobs K; Kleinknecht K; Krocker M; Muller AS; Nurnberger HA; Quast G; Renk B; Rohne E; Sander HG; Schmeling S; Wachsmuth H; Zeitnitz C; Ziegler T; Bonissent A; Carr J; Coyle P; Curtil C; Ealet A; Fouchez D; Leroy O; Kachelhoffer T; Payre P; Rousseau D; Tilquin A; Aleppo M; Gilardoni S; Ragusa F; Dietl H; Ganis G; Heister A; Huttmann K; Lutjens G; Mannert C; Manner W; Moser HG; Schael S; Settles R; Stenzel H; Wiedenmann W; Wolf G; Azzurri P; Boucrot J; Callot O; Davier M; Duflot L; Grivaz JF; Heusse P; Jacholkowska A; Serin L; Veillet JJ; Videau I; de Regie JBD; Zerwas D; Bagliesi G; Boccali T; Calderini G; Ciulli V; Foa L; Giammanco A; Giassi A; Ligabue F; Messineo A; Palla F; Rizzo G; Sanguinetti G; Sciaba A; Sguazzoni G; Tenchini R; Venturi A; Verdini PG; Blair GA; Coles J; Cowan G; Green MG; Hutchcroft DE; Jones LT; Medcalf T; Strong JA; von Wimmersperg-Toeller JH; Clifft RW; Edgecock TR; Norton PR; Tomalin IR; Bloch-Devaux B; Boumediene D; Colas P; Fabbro B; Faif G; Lancon E; Lemaire MC; Locci E; Perez P; Rander J; Renardy JF; Rosowsky A; Seager P; Trabelsi A; Tuchming B; Vallage B; Black SN; Dann JH; Loomis C; Kim HY; Konstantinidis N; Litke AM; McNeil MA; Taylor G; Booth CN; Cartwright S; Combley F; Hodgson PN; Lehto M; Thompson LF; Affholderbach K; Bohrer A; Brandt S; Grupen C; Hess J; Misiejuk A; Prange G; Sieler U; Borean C; Giannini G; Gobbo B; He H; Putz J; Rothberg J; Wasserbaech S; Armstrong SR; Cranmer K; Elmer P; Ferguson DPS; Gao Y; Gonzalez S; Hayes OJ; Hu H; Jin S; Kile J; McNamara PA; Nielsen J; Orejudos W; Pan YB; Saadi Y; Scott IJ; Walsh J; Wu J; Wu SL; Wu X; Zobernig G. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 488:3-4(2000), pp. 234-246. |
Abstract: | Data collected at centre-of-mass energies from 189 GeV to 202 GeV by the ALEPH detector at LEP corresponding to an integrated luminosity of 411 pb(-1), are analysed in a search for the scalar top in the decay channels (t) over tilde --> c/u chi for small mass differences between the stop and the lightest neutralino. No evidence for deviations from the Standard Model expectation is found and a lower limit of 59 GeV/c(2) is set for the stop mass, independent of the stop to neutralino mass difference and of the stop lifetime. (C) 2000 Elsevier Science B.V. All rights reserved. RI Jones, Roger/H-5578-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; O'Shea, Val/G-1279-2010 |
Handle: | http://hdl.handle.net/20.500.11769/13483 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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