Search for a scalar top almost degenerate with the lightest neutralino e(+)e(-) collisions at root s up to 202 GeV

6533b82dfe1ef96bd1291602

RESEARCH PRODUCT

Search for a scalar top almost degenerate with the lightest neutralino e(+)e(-) collisions at root s up to 202 GeV

J-c. Montret Andrea Giammanco O. Callot M. A. Mcneil G. Merino M. Pepe-altarelli Simone Gilardoni Donato Creanza J. Nielsen Fabrizio Palla Fabrizio Palla John T Harvey T. R. Edgecock Hasko Stenzel Alessandro Giassi Giuseppe Raso G. Parrini H. G. Sander V. M. Ghete G.p. Murtas Jean-francois Grivaz G. Rudolph J. H. Von Wimmersperg-toeller Maria Smizanska J. D. Hansen S.r. Armstrong T. Kachelhoffer Olivier Deschamps Nancy Marinelli F. Gianotti Maria Pilar Casado Giovanna Selvaggi O. Schneider O. Schneider T.c. Greening G. Bencivenni Reisaburo Tanaka P. Henrard N. A. Robertson M. Wunsch Stephane Jezequel G. Sguazzoni S. Wasserbaech S. Werner P. Seager M. Aleppo G. Faïf G. Chazelle A. Ealet R. Xu C. K. Bowdery Lucia Silvestris J. J. Veillet P. Perez F. Cerutti J. Boucrot Franco Ligabue Piero Giorgio Verdini B. Michel A. J. Finch John-bjarne Hansen L. Passalacqua S. Jin Dominique Pallin David Rousseau H. Videau C. Goy D. Fouchez A. Jacholkowska K. Affholderbach H.y. Kim J. Lopez P. Ghez J.m. Pascolo Patrick Janot Oliver Buchmuller S. Dessagne A. Minten Francesco Ragusa Peter Elmer Werner Wiedenmann A. Vayaki J. P. Lees Roberto Tenchini Roberto Tenchini A. Trabelsi A. Trabelsi Marco Cattaneo F. F. Martin Paul Hanke A. Ranieri John H. L. Hansen U. Sieler P.g. Buck J.j. Ward L. Duflot D.p. Clarke C. N. Booth Markus Frank L. F. Thompson E. Grauges E. E. Kluge J. Jousset Michael Schmitt Michael Schmitt F. Ranjard G. Mannocchi N. De Filippis Giuseppe Zito D. M. Binnie Ettore Focardi John Rander F. Machefert P. Colas G. Sanguinetti M. Martinez Ramon Miquel Gy. Wolf A. S. Thompson G. Bologna P. R. Norton A. Rougé I.j. Scott R. W. Clifft A. Antonelli R. Beuselinck A. Böhrer G. A. Cowan Paolo Spagnolo M. Kröcker J. J. Walsh J.h. Dann Vincent Lemaitre G. Maggi Emmerich Kneringer Alain Falvard F. Murtas Salvatore Nuzzo H. Ruiz J.g. Lynch C. Curtil Alan Litke David Paneque Mario Maggi Yuehong Xie K. Hüttmann E. Tournefier Giuseppe Bagliesi W. Cameron F. Hölldorfer A. Tilquin G.a. Blair Y. Saadi A. Rosowsky A. Bonissent S. Dhamotharan J. K. Sedgbeer P. Maley P. Coyle S. Brandt G. Hughes A.e. Wright T. Medcalf David J. Smith C. Mannert B. Vallage J. Carr M.-n. Minard F. Ruggieri G. Capon M. Girone X. Huang Andrea Valassi Gerardo Ganis O.j. Hayes A. W. Halley A. Moutoussi S. Bravo Georg Zobernig S.n. Black F. Teubert Gavin Davies F. Combley J. C. Brient J. Nowell S. Gonzalez K. Tittel Konrad Kleinknecht V. Ciulli M. Chmeissani G. B. Taylor C. Markou Georgios Daskalakis Sau Lan Wu J. B. De Vivie De Regie M. G. Green P. Tempesta Paolo Laurelli A.-s. Müller F. Foster A. Putzer Tommaso Boccali Gunter Quast Gunter Quast Aristotelis Kyriakis A. Sciabà M. Davier J. Hess A. Heister W. Orejudos B. Raeven A. Pacheco Karl Jakobs P. Girtler P. Campana Andrea Venturi W. Tejessy B. Pietrzyk I. Giehl T. Ziegler B. Fabbro B. Renk Xin Wu B. Bloch-devaux Ziad Ajaltouni J. M. Crespo E. Merle Richard Cavanaugh C. Loomis Y. B. Pan Pere Mato Djamel Eddine Boumediene J. A. Strong E. Simopoulou M. Fernandez-bosman M. C. Lemaire F. Bossi Val O'shea E. Rohne Peter Hansen Peter Hansen P. A. Mcnamara H.-a. Nürnberger J. Kennedy G. Rizzo L. Zhang Massimo Antonelli J. Kile S. Monteil G. Prange F. Podlyski J. Rothberg Ian R Tomalin V. Hepp G. Lütjens Alessia Tricomi Ll. M. Mir W. Männer Olivier Leroy Christian Zeitnitz D. Decamp Qun Ouyang K. Zachariadou Ll. Garrido Ll. Garrido S. Schmeling R. W. L. Jones Günther Dissertori Vitaliano Chiarella H. G. Moser Marumi Kado L. Rolandi Eric Lancon D.e. Hutchcroft B.s. Nilsson Ting Wang A. Misiejuk B. Gobbo S. Xue L.t. Jones C. Guicheney G. Ellis Paolo Azzurri R. Settles R. Settles Boris Tuchming W. Zhao Duccio Abbaneo C. Grupen C. Grupen Elizabeth Locci G. Calderini G. Giannini Y. S. Gao I. Videau Roger Forty J. Putz N. Konstantinidis R. White A. Wäänänen M H. Lehto Ph. Heusse Jie Zhang Paul Hodgson P. Payre Giuseppe Iaselli M. Chalmers M. Swynghedauw P. Teixeira-dias H. Hu Jf Renardy S. Schael D. Kuhn M. De Palma P. J. Negus H. Dietl F. Badaud S. L. Cartwright Dirk Zerwas Jiali Lin J.c. Thompson J.c. Thompson H. Drevermann D.p.s. Ferguson C. Geweniger C. Geweniger Kyle Cranmer Lorenzo Foà C. Borean B. Jost Alberto Messineo Evelyn Thomson Evelyn Thomson E. Fernandez Laurent Serin J. Coles P. Perret G. Leibenguth H. Przysiezniak H. Przysiezniak G. Boix D. Schlatter Junjie Wu P. J. Dornan A. Blondel H. He R. Barate Anna Colaleo H. Wachsmuth

subject

Physics Nuclear and High Energy Physics Aleph Particle physics [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]010308 nuclear & particles physics Degenerate energy levels High Energy Physics::Phenomenology Scalar (physics)01 natural sciences Lower limit Nuclear physics 0103 physical sciences Neutralino [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment 010306 general physics Particle Physics - Experiment

description

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.

year	journal	country	edition	language
2000-01-01

10.1016/s0370-2693(00)00893-5 http://hdl.handle.net/11589/4283