TOPOLOGICAL SEARCH FOR THE PRODUCTION OF NEUTRALINOS AND SCALAR

Authors
ALEXANDER G ALLISON J ALTEKAMP N AMETEWEE K ANDERSON KJ ANDERSON S ARCELLI S ASAI S AXEN D AZUELOS G BALL AH BARBERIO E BARLOW RJ BARTOLDUS R BATLEY JR BEAUDOIN G BECHTLUFT J BEESTON C BEHNKE T BELL AN BELL KW BELLA G BENTVELSEN S BERLICH P BETHKE S BIEBEL O BLOBEL V BLOODWORTH IJ BLOOMER JE BOCK P BOSCH HM BOUTEMEUR M BOUWENS BT BRAIBANT S BRIGHTTHOMAS P BROWN RM BURCKHART HJ BURGARD C BURGIN R CAPILUPPI P CARNEGIE RK CARTER AA CARTER JR CHANG CY CHARLESWORTH C CHARLTON DG CHRISMAN D CHU SL CLARKE PEL COHEN I CONBOY JE COOKE OC CUFFIANI M DADO S DALLAPICCOLA C DALLAVALLE GM DARLING C DEJONG S DELPOZO LA DIXIT MS SILVA EDE DOUCET M DUCHOVNI E DUCKECK G DUERDOTH IP EDWARDS JEG ESTABROOKS PG EVANS HG EVANS M FABBRI F FATH P FIEDLER F FIERRO M FISCHER HM FOLMAN R FONG DG FOUCHER M FUKUI H FURTJES A GAGNON P GAIDOT A GARY JW GASCON J GASCONSHOTKIN SM GEDDES NI GEICHGIMBEL C GENSLER SW GENTIT FX GERALIS T GIACOMELLI G GIACOMELLI P GIACOMELLI R GIBSON V GIBSON WR GINGRICH DM GOLDBERG J GOODRICK MJ GORN W GRANDI C GROSS E GRUWE M HAJDU C HANSON GG HANSROUL M HAPKE M HARGROVE CK HART PA HARTMANN C HAUSCHILD M HAWKES CM HAWKINGS R HEMINGWAY RJ HERTEN G HEUER RD HILDRETH MD HILL JC HILLIER SJ HILSE T HOBSON PR HOMER RJ HONMA AK HORVATH D HOWARD R HUGHESJONES RE HUTCHCROFT DE IGOKEMENES P IMRIE DC INGRAM MR JAWAHERY A JEFFREYS PW JEREMIE H JIMACK M JOLY A JONES G JONES M JONES RWL JOST U JOVANOVIC P KANZAKI J KARLEN D KAWAMOTO T KEELER RK KELLOGG RG KENNEDY BW KING J KIRK J KLUTH S KOBAYASHI T KOBEL M KOETKE DS KOKOTT TP KOMAMIYA S KOWALEWSKI R KRESS T KRIEGER P VONKROGH J KYBERD P LAFFERTY GD LAFOUX H LAHMANN R LAI WP LANSKE D LAUBER J LAYTER JG LEE AM LEFEBVRE E LELLOUCH D LETTS J LEVINSON L LEWIS C LLOYD SL LOEBINGER FK LONG GD LORAZO B LOSTY MJ LUDWIG J LUIG A MALIK A MANNELLI M MARCELLINI S MARKUS C MARTIN AJ MARTIN JP MARTINEZ G MASHIMO T MATTHEWS W MATTIG P MCDONALD WJ MCKENNA J MCKIGNEY EA MCMAHON TJ MCNAB AI MEIJERS F MENKE S MERRITT FS MES H MEYER J MICHELINI A MIKENBERG G MILLER DJ MIR R MOHR W MONTANARI A MORI T MORII M MULLER U NELLEN B NIJJHAR B NISIUS R ONEALE SW OAKHAM FG ODORICI F OGREN HO OMORI T OREGLIA MJ ORITO S PALAZZO M PALINKAS J PANSART JP PASZTOR G PATER JR PATRICK GN PEARCE MJ PETZOLD S PILCHER JE PINFOLD J PLANE DE POFFENBERGER P POLI B POSTHAUS A PRZYSIEZNIAK H REES DL RIGBY D RISON MG ROBINS SA RODNING N RONEY JM ROOKE A ROS E ROSSI AM ROSVICK M ROUTENBURG P ROZEN Y RUNGE K RUNOLFSSON O RUST DR RYLKO R SARKISYAN EKG SASAKI M SBARRA C SCHAILE AD SCHAILE O SCHARF F SCHARFFHANSEN P SCHENK P SCHMITT B SCHRODER M SCHULTZCOULON HC SCHULZ M SCHUTZ P SCHWIENING J SCOTT WG SHEARS TG SHEN BC SHEPHERDTHEMISTOCLEOUS CH SHERWOOD P SIROLI GP SITTLER A SKILLMAN A SKUJA A SMITH AM SMITH TJ SNOW GA SOBIE R SOLDNERREMBOLD S SPRINGER RW SPROSTON M STAHL A STARKS M STEPHENS K STEUERER J STOCKHAUSEN B STROM D STRUMIA F SZYMANSKI P TAFIROUT R TAKEDA H TARAS P TAREM S TECCHIO M TESCH N THIERGEN M THOMSON MA VONTORNE E TOWERS S TSCHEULIN M TSUR E TURCOT AS TURNERWATSON MF UTZAT P VANKOOTEN R VASSEUR G VERZOCCHI M VIKAS P VINCTER M VOKURKA EH WACKERLE F WAGNER A WARD CP WARD DR WARD JJ WATKINS PM WATSON AT WATSON NK WEBER P WELLS PS WERMES N WHITE JS WILKENS B WILSON GW WILSON JA WLODEK T WOLF G WOTTON S WYATT TR XELLA S YAMASHITA S YEKUTIELI G YOSHIMURA K ZACEK V
Citation
G. Alexander et al., TOPOLOGICAL SEARCH FOR THE PRODUCTION OF NEUTRALINOS AND SCALAR, Physics letters. Section B, 377(4), 1996, pp. 273-288
Citations number
65
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
377
Issue
4
Year of publication
1996
Pages
273 - 288
Database
ISI
SICI code
0370-2693(1996)377:4<273:TSFTPO>2.0.ZU;2-V
Abstract
A search for scalar particles and neutralinos such as those predicted by supersymmetric models has been performed using a data sample of 4.4 million hadronic Z(0) decays recorded by the OPAL detector at the e()e(-) collider LEP. The production of such particles typically leads t o event topologies consisting of an acoplanar pair of jets, or of a mo no-jet, accompanied by sizeable missing energy owing to neutrinos and other undetectable neutral particles. Limits are obtained, at the 95% confidence level, on the masses and production rates of scalar particl es produced in association with the Z(0). Limits are also placed on ne utralino production, for which an additional possible signature is als o studied, events containing a single observed photon. Within the Mini mal Supersymmetric Standard Model, the mass of the lightest neutralino is found to be larger than 12.5 GeV/c(2) at 95% C.L., provided that t an beta is larger than 1.5.