Searches for Supersymmetry in the photon(s) plus missing energy channels at $\sqrt{s}$ = 161 GeV and 172 GeV

6533b82afe1ef96bd128b815

RESEARCH PRODUCT

Searches for Supersymmetry in the photon(s) plus missing energy channels at $\sqrt{s}$ = 161 GeV and 172 GeV

R Barate D Buskulic D Decamp P Ghez C Goy J.-p Lees A Lucotte M.-n Minard J.-y Nief B Pietrzyk M.p Casado M Chmeissani P Comas J.m Crespo M Delfino E Fernandez M Fernandez-bosman Ll Garrido A Juste M Martinez G Merino R Miquel Ll.m Mir C Padilla I.c Park A Pascual J.a Perlas I Riu F Sanchez 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 J 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 I Lehraus P Mato A Minten L Moneta A Pacheco J.-f Pusztaszeri F Ranjard G Rizzo L Rolandi D Rousseau D Schlatter M Schmitt O Schneider W Tejessy F Teubert I.r Tomalin H Wachsmuth A Wagner Z Ajaltouni A Barrès C Boyer A Falvard C Ferdi P Gay C Guicheney P Henrard J Jousset B Michel S Monteil J-c Montret D Pallin P Perret F Podlyski J Proriol P Rosnet J.-m Rossignol T Fearnley J.d Hansen J.r Hansen P.h Hansen B.s Nilsson B Rensch A Wäänänen G Daskalakis A Kyriakis C Markou E Simopoulou A Vayaki A Blondel J.c Brient F Machefert A Rougé M Rumpf A Valassi H Videau T Boccali E Focardi G Parrini K Zachariadou R Cavanaugh M Corden C Georgiopoulos T Huehn 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 O Buchmüller S Dhamotharan C Geweniger G Graefe 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 E.b Martin P Morawitz A Moutoussi J Nash J.k Sedgbeer P Spagnolo A.m Stacey M.d Williams V.m Ghete P Girtler D Kuhn G Rudolph A.p Betteridge C.k Bowdery P.g Buck P Colrain G Crawford A.j Finch F Foster G Hughes R.w.l Jones T Sloan E.p Whelan M.i Williams I Giehl C Hoffmann K Jakobs K Kleinknecht G Quast B Renk E Rohne H.-g Sander P Van Gemmeren C Zeitnitz J.j Aubert C Benchouk A Bonissent G Bujosa J Carr P Coyle C Diaconu A Ealet D Fouchez N Konstantinidis O Leroy F Motsch P Payre M Talby A Sadouki M Thulasidas A Tilquin K Trabelsi M Aleppo M Antonelli F Ragusa R Berlich W Blum V Büscher H Dietl G Ganis C Gotzhein H Kroha G Lütjens G Lutz W Männer H.-g Moser R Richter A Rosado-schlosser S Schael R Settles H Seywerd R St. Denis H Stenzel W Wiedenmann G Wolf J Boucrot O Callot S Chen A Cordier M Davier L Duflot J.-f Grivaz Ph Heusse A Höcker A Jacholkowska M Jacquet D.w Kim F Le Diberder J Lefrançois A.-m Lutz I Nikolic M.-h Schune L Serin S Simion E Tournefier J.-j Veillet I Videau D Zerwas P Azzurri G Bagliesi S Bettarini C Bozzi G Calderini 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 Sciabà G Sguazzoni J Steinberger R Tenchini 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 Lançon 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 Cartwright F Combley M.s Kelly M Lehto W.m Newton J Reeve L.f Thompson K Affholderbach A Böhrer S Brandt G Cowan J Foss C Grupen G Lutters P Saraiva L Smolik F Stephan M Apollonio L Bosisio R Della Marina G Giannini B Gobbo G Musolino J Putz J Rothberg S Wasserbaech R.w Williams S.r Armstrong E Charles P Elmer D.p.s Ferguson S González T.c Greening O.j Hayes H Hu S Jin P.a Mcnamara Iii J.m Nachtman J Nielsen W Orejudos Y.b Pan Y Saadi I.j Scott J Walsh Sau Lan Wu X Wu J.m Yamartino G Zobernig

subject

Physics Nuclear and High Energy Physics Particle physics Annihilation Missing energy High Energy Physics::Phenomenology FOS: Physical sciences Supersymmetry High Energy Physics - Experiment Nuclear physics High Energy Physics - Experiment (hep-ex)Pair production Neutralino Gravitino Production (computer science)High Energy Physics::Experiment ALEPH experiment Particle Physics - Experiment

description

Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at LEP. The data consist of 11.1 pb-1 at $\sqrt{s} = 161 GeV$, 1.1 pb-1 at 170 GeV and 9.5 pb-1 at 172 GeV. The e+e- -> nunu+photon cross section is measured. The data are in good agreement with predictions based on the Standard Model, and are used to set upper limits on the cross sections for anomalous photon production. These limits are compared to two different SUSY models and used to set limits on the neutralino mass. A limit of 71 GeV/c^2 at 95% C.L. is set on the mass of the lightest neutralino ($\tau_{\chi_{1}^{0}} \leq $ 3 ns) for the gauge-mediated supersymmetry breaking and LNZ models.

year	journal	country	edition	language
1997-10-10

10.1016/s0370-2693(97)01555-4 http://arxiv.org/abs/hep-ex/9710009