SEARCH FOR 1ST-GENERATION LEPTOQUARKS IN (P)OVER-BAR-P COLLISIONS AT ROOT-S=1.8TEV

Authors
ABE F ALBROW M AMIDEI D ANWAYWIESE C APOLLINARI G ATAC M AUCHINCLOSS P AZZI P BADEN AR BACCHETTA N BADGETT W BAILEY MW BAMBERGER A DEBARBARO P BARBAROGALTIERI A BARNES VE BARNETT BA BAUER G BAUMANN T BEDESCHI F BEHRENDS S BELFORTE S BELLETTINI G BELLINGER J BENJAMIN D BENLLOCH J BENSINGER J BERETVAS A BERGE JP BERTOLUCCI S BIERY K BHADRA S BINKLEY M BISELLO D BLAIR R BLOCKER C BODEK A BOLOGNESI V BOOTH AW BOSWELL C BRANDENBURG G BROWN D BUCKLEYGEER E BUDD HS BUSETTO G BYONWAGNER A BYRUM KL CAMPAGNARI C CAMPBELL M CANER A CAREY R CARITHERS W CARLSMITH D CARROLL JT CASHMORE R CASTRO A CEN Y CERVELLI F CHADWICK K CHAPMAN J CHIARELLI G CHINOWSKY W CIHANGIR S CLARK AG COBAL M CONNOR D CONTRERAS M COOPER J CORDELLI M CRANE D CUNNINGHAM JD DAY C DEJONGH F DELLAGNELLO S DELLORSO M DEMORTIER L DENBY B DERWENT PF DEVLIN T DIBITONTO D DICKSON M DRUCKER RB EINSWEILER K ELIAS JE ELY R ENO S ERREDE S ETCHEGOYEN A FARHAT B FRAUTSCHI M FELDMAN GJ FLAUGHER B FOSTER GW FRANKLIN M FREEMAN J FRISCH H FUESS T FUKUI Y GARFINKEL AF GAUTHIER A GEER S GERDES DW GIANNETTI P GIOKARIS N GIROMINI P GLADNEY L GOLD M GONZALEZ J GOULIANOS K GRASSMANN H GRIECO GM GRINDLEY R GROSSOPILCHER C HABER C HAHN SR HANDLER R HARA K HARRAL B HARRIS RM HAUGER SA HAUSER J HAWK C HESSING T HOLLEBEEK R HOLLOWAY L HOLSCHER A HONG S HOUK G HU P HUBBARD B HUFFMAN BT HUGHES R HURST P HUTH J HYLEN J INCAGLI M INO T ISO H JENSEN H JESSOP CP JOHNSON RP JOSHI U KADEL RW KAMON T KANDA S KARDELIS DA KARLINER I KEARNS E KEEBLE L KEPHART R KESTEN P KEUP RM KEUTELIAN H KIM D KIM SB KIM SH KIM YK KIRSCH L KONDO K KONIGSBERG J KORDAS K KOVACS E KRASBERG M KUHLMANN SE KUNS E LAASANEN AT LAMMEL S LAMOUREUX JI LEONE S LEWIS JD LI W LIMON P LINDGREN M LISS TM LOCKYER N LORETI M LOW EH LUCCHESI D LUCHINI CB LUKENS P MAAS P MAESHIMA K MANGANO M MARRINER JP MARIOTTI M MARKELOFF R MARKOSKY LA MATTHEWS J MATTINGLY R MCINTYRE P MENZIONE A MESCHI E MEYER T MIKAMO S MILLER M MIMASHI T MISCETTI S MISHINA M MIYASHITA S MORITA Y MOULDING S MUELLER J MUKHERJEE A MULLER T NAKAE LF NAKANO I NELSON C NEUBERGER D NEWMANHOLMES C NG JST NINOMIYA M NODULMAN L OGAWA S PAOLETTI R PAPADIMITRIOU V PARA A PARE E PARK S PATRICK S PAULETTA G PESCARA L PIACENTINO G PHILLIPS TJ PTOHOS F PLUNKETT R PONDROM L PROUDFOOT J PUNZI G QUARRIE D RAGAN K REDLINGER G RHOADES J ROACH M RIMONDI F RISTORI L ROBERTSON WJ RODRIGO T ROHALY T ROODMAN A SAKUMOTO WK SANSONI A SARD RD SAVOYNAVARRO A SCARPINE V SCHLABACH P SCHMIDT EE SCHNEIDER O SCHUB MH SCHWITTERS R SCIACCA G SCRIBANO A SEGLER S SEIDEL S SEIYA Y SGANOS G SHAPIRO M SHAW NM SHEAFF M SHOCHET M SIEGRIST J SILL A SINERVO P SKARHA J SLIWA K SMITH DA SNIDER FD SONG L SONG T SPAHN M SPIES A SPHICAS P STDENIS R STANCO L STEFANINI A SULLIVAN G SUMOROK K SWARTZ RL TAKANO M TAKIKAWA K TAREM S TARTARELLI F TETHER S THERIOT D TIMKO M TIPTON P TKACZYK S TOLLESTRUP A TONNISON J TRISCHUK W TSAY Y TSENG J TURINI N UKEGAWA F UNDERWOOD D VEJCIK S VIDAL R WAGNER RG WAGNER RL WAINER N WALKER RC WALSH J WATTS G WATTS T WEBB R WENDT C WENZEL H WESTER WC WESTHUSING T WHITE SN WICKLUND AB WICKLUND E WILLIAMS HH WINER BL WOLINSKI J WU DY WU X WYSS J YAGIL A YASUOKA K YE Y YEH GP YOH J YOKOYAMA M YUN JC ZANETTI A ZETTI F ZHANG S ZHANG W ZUCCHELLI S
Citation
F. Abe et al., SEARCH FOR 1ST-GENERATION LEPTOQUARKS IN (P)OVER-BAR-P COLLISIONS AT ROOT-S=1.8TEV, Physical review. D. Particles and fields, 48(9), 1993, pp. 3939-3944
Citations number
19
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
48
Issue
9
Year of publication
1993
Pages
3939 - 3944
Database
ISI
SICI code
0556-2821(1993)48:9<3939:SF1LI(>2.0.ZU;2-H
Abstract
We present results of a search for a first-generation leptoquark S1 in ppBAR collisions at square-root s = 1.8 TeV at the Fermilab Tevatron. Using 4.05 pb-1 of data collected during the 1988-1989 CDF run, we ha ve searched for evidence of S1S1BAR production assuming that each lept oquark decays to an electron+quark pair with a branching ratio beta. T hree events with two high energy electrons and two high energy jets we re found, but are consistent with Z0 decay. No events were found in th e signal region. Assuming a short lived scalar leptoquark with Yukawa coupling strength lambda greater than or similar to 2 x 10(-7), we exc lude sigmabeta2 > 55(4.0) pb at 95% C.L. for M(s) = 45(125) GeV/c2. Us ing a Monte Carlo prediction for sigma(ppBAR --> S1S1 + X), we exclude M(s) < 113(80) GeV/c2 for beta = 100(50)%.