SEARCH FOR CHARGINO AND NEUTRALINO PRODUCTION USING THE OPAL DETECTORAT ROOT-S=130-136GEV AT LEP

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 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 ED 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 B 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 PALMONARI FM 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., SEARCH FOR CHARGINO AND NEUTRALINO PRODUCTION USING THE OPAL DETECTORAT ROOT-S=130-136GEV AT LEP, Physics letters. Section B, 377(1-3), 1996, pp. 181-194
Citations number
38
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
377
Issue
1-3
Year of publication
1996
Pages
181 - 194
Database
ISI
SICI code
0370-2693(1996)377:1-3<181:SFCANP>2.0.ZU;2-M
Abstract
A search for charginos and neutralinos, predicted by supersymmetric th eories, has been performed using a data sample of 2.6 pb(-1) at a cent re-of-mass energy of root s = 130 GeV and 2.6 pb(-1) at 136 GeV collec ted with the OPAL detector at LEP during November 1995. No candidate e vents were observed. The 95% C.L. lower limit on the lightest chargino mass in the Minimal Supersymmetric Standard Model is 65.4 GeV if the universal scalar mass m(o) is greater than 1 TeV, and 58.7 GeV for the smallest m(o) compatible with slepton and sneutrino mass limits obtai ned at centre-of-mass energies near the Z peak. These limits were obta ined under the conditions that the lightest chargino is heavier than t he lightest neutralino by more than 10 GeV and tan beta is larger than 1.5. The results of a model independent search for charginos and neut ralinos are also given.