Absolute mass lower limit for the lightest neutralino of the MSSM from $e^{+}e^{-}$ data at $\sqrt{s}$ up to 209 GeV

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RESEARCH PRODUCT

Absolute mass lower limit for the lightest neutralino of the MSSM from $e^{+}e^{-}$ data at $\sqrt{s}$ up to 209 GeV

A Heister S Schael R Barate R Brunelière I De Bonis D Decamp C Goy S Jézéquel J.-p Lees F Martin E Merle M.-n Minard B Pietrzyk B Trocmé S Bravo M.p Casado M Chmeissani J.m Crespo E Fernandez M Fernandez-bosman Ll Garrido M Martinez A Pacheco H Ruiz A Colaleo D Creanza N De Filippis M De Palma G Iaselli G Maggi M Maggi S Nuzzo A Ranieri G Raso F Ruggieri G Selvaggi L Silvestris P Tempesta A Tricomi G Zito X Huang J Lin Q Ouyang T Wang Y Xie R Xu S Xue J Zhang L Zhang W Zhao D Abbaneo T Barklow O Buchmüller M Cattaneo B Clerbaux H Drevermann R.w Forty M Frank F Gianotti J.b Hansen J Harvey D.e Hutchcroft P Janot B Jost M Kado P Mato A Moutoussi F Ranjard L Rolandi D Schlatter G Sguazzoni F Teubert A Valassi I Videau F Badaud S Dessagne A Falvard D Fayolle P Gay J Jousset B Michel S Monteil D Pallin J.m Pascolo P Perret J.d Hansen J.r Hansen P.h Hansen A.c Kraan B.s Nilsson A Kyriakis C Markou E Simopoulou A Vayaki K Zachariadou A Blondel J.-c Brient F Machefert A Rougé H Videau V Ciulli E Focardi G Parrini A Antonelli M Antonelli G Bencivenni F Bossi G Capon F Cerutti V Chiarella P Laurelli G Mannocchi G.p Murtas L Passalacqua J Kennedy J.g Lynch P Negus V O'shea A.s Thompson S Wasserbaech R Cavanaugh S Dhamotharan C Geweniger P Hanke V Hepp E.e Kluge A Putzer H Stenzel K Tittel M Wunsch R Beuselinck W Cameron G Davies P.j Dornan M Girone R.d Hill N Marinelli J Nowell S.a Rutherford J.k Sedgbeer J.c Thompson R White V.m Ghete P Girtler E Kneringer D Kuhn G Rudolph E Bouhova-thacker C.k Bowdery D.p Clarke G Ellis A.j Finch F Foster G Hughes R.w.l Jones M.r Pearson N.a Robertson M Smizanska O Van Der Aa C Delaere G Leibenguth V Lemaitre U Blumenschein F Hölldorfer K Jakobs F Kayser K Kleinknecht A.-s Müller B Renk H.-g Sander S Schmeling H Wachsmuth C Zeitnitz T Ziegler A Bonissent P Coyle C Curtil A Ealet D Fouchez P Payre A Tilquin F Ragusa A David H Dietl G Ganis K Hüttmann G Lütjens W Männer H.-g Moser R Settles M Villegas G Wolf J Boucrot O Callot M Davier L Duflot J.-f Grivaz Ph Heusse A Jacholkowska L Serin J.-j Veillet J.-b De Vivie De Régie P Azzurri G Bagliesi T Boccali L Foà A Giammanco A Giassi F Ligabue A Messineo F Palla G Sanguinetti A Sciabà P Spagnolo R Tenchini A Venturi P.g Verdini O Awunor G.a Blair G Cowan A Garcia-bellido M.g Green T Medcalf A Misiejuk J.a Strong P Teixeira-dias R.w Clifft T.r Edgecock P.r Norton I.r Tomalin J.j Ward B Bloch-devaux D Boumediene P Colas B Fabbro E Lançon M.-c Lemaire E Locci P Perez J Rander B Tuchming B Vallage A.m Litke G Taylor C.n Booth S Cartwright F Combley P.n Hodgson M Lehto L.f Thompson A Böhrer S Brandt C Grupen J Hess A Ngac G Prange C Borean G Giannini H He J Putz J Rothberg S.r Armstrong K Berkelman K Cranmer D.p.s Ferguson Y Gao S González O.j Hayes H Hu S Jin J Kile P.a Mcnamara J Nielsen Y.b Pan J.h Von Wimmersperg-toeller W Wiedenmann J Wu Sau Lan Wu X Wu G Zobernig G Dissertori

subject

Physics Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics High Energy Physics::Phenomenology Gaugino Supersymmetry 01 natural sciences Lightest Supersymmetric Particle Nuclear physics parity supersymmetry supersymmetric models Chargino Sfermion 0103 physical sciences Neutralino Higgs boson [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment 010306 general physics ALEPH experiment Particle Physics - Experiment

description

Charginos and neutralinos are searched for in the data collected by the ALEPH experiment at LEP for centre-of-mass energies up to 209 GeV. The negative result of these searches is combined with those from searches for sleptons and Higgs bosons to derive an absolute lower limit of 43.1 GeV/c(2) on the mass of the lightest supersymmetric particle (LSP), assumed to be the,lightest neutralino. This limit is obtained in the framework of the MSSM with R-parity conservation and with gaugino and sfermion mass unification at the GUT scale and assuming no mixing in the stau sector. The LSP limit degrades only slightly to 42.4 GeV/c(2) if stau mixing is considered. Within the more constrained framework of minimal supergravity, the limit is 50 GeV/c(2). (C) 2004 Published by Elsevier B.V.

year	journal	country	edition	language
2004-01-01

https://hal.in2p3.fr/in2p3-00021636/file/democrite-00021636.pdf