SEARCH FOR A SCALAR TOP-QUARK USING THE OPAL DETECTOR

Authors
AKERS R ALEXANDER G ALLISON J ANDERSON KJ ARCELLI S ASAI S ASTBURY A AXEN D AZUELOS G BALL AH BARBERIO E BARLOW RJ BARTOLDUS R BATLEY JR BEAUDOIN G BECK A BECK GA BECKER J BEESTON C BEHNKE T BELL KW BELLA G BENTKOWSKI P BENTVELSEN S BERLICH P BETHKE S BIEBEL O BLOODWORTH IJ BOCK P BOSCH HM BOUTEMEUR M BRAIBANT S BRIGHTTHOMAS P BROWN RM BUIJS A BURCKHART HJ BURGARD C CAPILUPPI P CARNEGIE RK CARTER AA CARTER JR CHANG CY CHARLESWORTH C CHARLTON DG CHU SL CLARKE PEL CLAYTON JC CLOWES SG COHEN I CONBOY JE COUPLAND M CUFFIANI M DADO S DALLAPICCOLA D DALLAVALLE GM DARLING D DEJONG S DENG H DITTMAR M DIXIT MS SILVA EDE DUBOSCQ JE DUCHOVNI E DUCKECK G DUERDOTH IP DUNWOODY UC ELCOMBE PA ESTABROOKS PG ETZION E EVANS HG FABBRI F FABBRO B FANTI M FIERRO M FINCKEKEELER M FISCHER HM FISCHER P FOLMAN R FONG DG FOUCHER M FUKUI H FURTJES A GAGNON P GAIDOT A GARY JW GASCON J GEDDES NI GEICHGIMBEL C GENSLER SW GENTIT FX GERALIS T GIACOMELLI G GIACOMELLI P GIACOMELLI R GIBSON V GIBSON WR GILLIES JD GOLDBERG J GINGRICH DM GOODRICK MJ GORN W GRANDI C GRANNIS P GROSS E HAGEMANN J HANSON GG HANSROUL M HARGROVE CK HART J HART PA HAUSCHILD M HAWKES CM HEFLIN E HEMINGWAY RJ HERTEN G HEUER RD HILL JC HILLIER SJ HILSE T HINSHAW DA HOBSON PR HOCHMAN D HOCKER A HOMER RJ HONMA AK HUGHESJONES RE HUMBERT R IGOKEMENES P IHSSEN H IMRIE DC JAWAHERY A JEFFREYS PW JEREMIE H JIMACK M JONES M JONES RWL JOVANOVIC P JUI C KARLEN D KAWAGOE K KAWAMOTO T KEELER RK KELLOGG RG KENNEDY BW KING B KING J KLUTH S KOBAYASHI T KOBEL M KOETKE DS KOKOTT TP KOMAMIYA S KOWALEWSKI R HOWARD R KRIEGER P VONKROGH J KYBERD P LAFFERTY GD LAFOUX H LAHMANN R LAUBER J LAYTER JG LEBLANC P LEDU P LEE AM LEFEBVRE E LEHTO MH LELLOUCH D LEROY C LETTS J LEVINSON L LI Z LIU F LLOYD SL LOEBINGER FK LONG GD LORAZO B LOSTY MJ LOU XC LUDWIG J LUIG A MANNELLI M MARCELLINI S MARKUS C MARTIN AJ MARTIN JP MASHIMO T MATTIG P MAUR U MCKENNA J MCMAHON TJ MCNAB AI MCNUTT JR MEIJERS F MERRITT FS MES H MICHELINI A MIDDLETON RP MIKENBERG G MILDENBERGER J MILLER DJ MIR R MOHR W MOISAN C MONTANARI A MORI T MORII M MULLER U NELLEN B NIJJHAR B ONEALE SW OAKHAM FG ODORICI F OGREN HO ORAM CJ OREGLIA MJ ORITO S PANSART JP PATRICK GN PEARCE MJ PFISTER P PHILLIPS PD PILCHER JE PINFOLD J PITMAN D PLANE DE POFFENBERGER P POLI B POSTHAUS A PRITCHARD TW PRZYSIEZNIAK H REDMOND MW REES DL RIGBY D RISON M ROBINS SA ROBINSON D RONEY JM ROS E ROSSBERG S ROSSI AM ROSVICK M ROUTENBURG P ROZEN Y RUNGE K RUNOLFSSON O RUST DR SASAKI M SBARRA C SCHAILE AD SCHAILE O SCHARF F SCHARFFHANSEN P SCHENK P SCHMITT B VONDERSCHMITT H SCHRODER M SCHULTZCOULON HC SCHUTZ P SCHULZ M SCHWICK C SCHWIENING J SCOTT WG SETTLES M SHEARS TG SHEN BC SHEPHERDTHEMISTOCLEOUS CH SHERWOOD P SIROLI GP SKILLMAN A SKUJA A SMITH AM SMITH TJ SNOW GA SOBIE R SPRINGER RW SPROSTON M STAHL A STEGMANN C STEPHENS K STEUERER J STOCKHAUSEN B STROHMER R STROM D SZYMANSKI P TAKEDA H TAKESHITA T TAREM S TECCHIO M TEIXEIRADIAS P TESCH N THOMSON MA TOWERS S TSUKAMOTO T TURNERWATSON MF VANDENPLAS D VANKOOTEN R VASSEUR G VINCTER M WAGNER A WAGNER DL WARD CP WARD DR WARD JJ WATKINS PM WATSON AT WATSON NK WEBER P WELLS PS WERMES N WILKENS B WILSON GW WILSON JA WINTERER VH WLODEK T WOLF G WOTTON S WYATT TR YEAMAN A YEKUTIELI G YURKO M ZEUNER W ZORN GT
Citation
R. Akers et al., SEARCH FOR A SCALAR TOP-QUARK USING THE OPAL DETECTOR, Physics letters. Section B, 337(1-2), 1994, pp. 207-218
Citations number
43
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
337
Issue
1-2
Year of publication
1994
Pages
207 - 218
Database
ISI
SICI code
0370-2693(1994)337:1-2<207:SFASTU>2.0.ZU;2-I
Abstract
A search for a supersymmetric partner of the top quark (($) over tilde t(1)) has been performed by the OPAL experiment in e(+)e(-) collision s at LEP. The integrated luminosity of the data sample analysed was 69 .1 pb(-1), which corresponds to 1.68 x 10(6) produced Z(0) --> q ($) o ver tilde q events. No ($) over tilde t(1) candidates have been found. This study excludes the existence of the ($) over tilde t(1) with a m ass below 45.1 GeV at 95% C.L., where the mixing angle of left- and ri ght-handed partners is smaller than 0.85 rad or greater than 1.15 rad, and the mass difference between the ($) over tilde t(1) and the light est neutralino is greater than 5 GeV.