Evidence for top quark production in p¯p collisions at √s = 1.8 TeV
Year: 1994
Authors: ABE F., ALBROW MG., AMENDOLIA SR., AMIDEI D., ANTOS J., ANWAYWIESE C., APOLLINARI G., ARETI H., AUCHINCLOSS P., AUSTERN M., AZFAR F., AZZI P., BACCHETTA N., BADGETT W., BAILEY MW., BAO J., DEBARBARO P., BARBAROGALTIERI A., BARNES VE., BARNETT BA., BARTALINI P., BAUER G., BAUMANN T., BEDESCHI F., BEHRENDS S., BELFORTE S., BELLETTINI G., BELLINGER J., BENJAMIN D., BENLLOCH J., BENSINGER J., BENTON D., BERETVAS A., BERGE JP., BERTOLUCCI S., BHATTI A., BIERY K., BINKLEY M., BIRD F., BISELLO D., BLAIR RE., BLOCKER C., BODEK A., BOLOGNESI V., BORTOLETTO D., BOSWELL C., BOULOS T., BRANDENBURG G., BUCKLEYGEER E., BUDD HS., BURKETT K., BUSETTO G., BYONWAGNER A., BYRUM KL., CAMPAGNARI C., CAMPBELL M., CANER A., CARITHERS W., CARLSMITH D., CASTRO A., CEN Y., CERVELLI F., CHAPMAN J., CHENG MT., CHIARELLI G., CHIKAMATSU T., CIHANGIR S., CLARK AG., COBAL M., CONTRERAS M., CONWAY J., COOPER J., CORDELLI M., COUPAL DP., CRANE D., CUNNINGHAM JD., DANIELS T., DEJONGH F., DELCHAMPS S., DELLAGNELLO S., DELLORSO M., DEMORTIER L., DENBY B., DENINNO M., DERWENT PF., DEVLIN T., DICKSON M., DONATI S., DRUCKER RB., DUNN A., EINSWEILER K., ELIAS JE., ELY R., ENGELS E., ENO S., ERREDE D., ERREDE S., FAN Q., FARHAT B., FIORI I., FLAUGHER B., FOSTER GW., FRANKLIN M., FRAUTSCHI M., FREEMAN J., FRIEDMAN J., FRISCH H., FRY A., FUESS TA., FUKUI Y., FUNAKI S., GAGLIARDI G., GALEOTTI S., GALLINARO M., GARFINKEL AF., GEER S., GERDES DW., GIANNETTI P., GIOKARIS N., GIROMINI P., GLADNEY L., GLENZINSKI D., GOLD M., GONZALEZ J., GORDON A., GOSHAW AT., GOULIANOS K., GRASSMANN H., GREWAL A., GRIECO G., GROER L., GROSSOPILCHER C., HABER C., HAHN SR., HAMILTON R., HANDLER R., HANS RM., HARA K., HARRAL B., HARRIS RM., HAUGER SA., HAUSER J., HAWK C., HEINRICH J., HENNESSY D., HOLLEBEEK R., HOLLOWAY L., HOLSCHER A., HONG S., HOUK G., HU P., HUFFMAN BT., HUGHES R., HURST P., HUSTON J., HUTH J., HYLEN J., INCAGLI M., INCANDELA J., ISO H., JENSEN H., JESSOP CP., JOSHI U., KADEL RW., KAJFASZ E., KAMON T., KANEKO T., KARDELIS DA., KASHA H., KATO Y., KEEBLE L., KENNEDY RD., KEPHART R., KESTEN P., KESTENBAUM D., KEUP RM., KEUTELIAN H., KEYVAN F., KIM DH., KIM HS., KIM SB., KIM SH., KIM YK., KIRSCH L., KOEHN P., KONDO K., KONIGSBERG J., KOPP S., KORDAS K., KOSKA W., KOVACS E., KOWALD W., KRASBERG M., KROLL J., KRUSE M., KUHLMANN SE., KUNS E., LAASANEN AT., LAMMEL S., LAMOUREUX JI., LECOMPTE T., LEONE S., LEWIS JD., LIMON P., LINDGREN M., LISS TM., LOCKYER N., LONG O., LORETI M., LOW EH., LU J., LUCCHESI D., LUCHINI CB., LUKENS P., LYS J., MAAS P., MAESHIMA K., MAGHAKIAN A., MAKSIMOVIC P., MANGANO M., MANSOUR J., MARIOTTI M., MARRINER JP., MARTIN A., MATTHEWS JAJ., MATTINGLY R., MCINTYRE P., MELESE P., MENZIONE A., MESCHI E., MICHAIL G., MIKAMO S., MILLER M., MILLER R., MIMASHI T., MISCETTI S., MISHINA M., MITSUSHIO H., MIYASHITA S., MORITA Y., MOULDING S., MUELLER J., MUKHERJEE A., MULLER T., MUSGRAVE P., NAKAE LF., NAKANO I., NELSON C., NEUBERGER D., NEWMANHOLMES C., NODULMAN L., OGAWA S., OH SH., OHL KE., OISHI R., OKUSAWA T., PAGLIARONE C., PAOLETTI R., PAPADIMITRIOU V., PARK S., PATRICK J., PAULETTA G., PAULINI M., PESCARA L., PETERS MD., PHILIPS TJ., PIACENTINO G., PILLAI M., PLUNKETT R., PONDROM L., PRODUIT N., PROUDFOOT J., PTOHOS F., PUNZI G., RAGAN K., RIMONDI F., RISTORI L., ROACHBELLINO M., ROBERTSON WJ., RODRIGO T., ROMANO J., ROSENSON L., SAKUMOTO WK., SALTZBERG D., SANSONI A., SCARPINE V., SCHINDLER A., SCHLABACH P., SCHMIDT EE., SCHMIDT MP., SCHNEIDER O., SCIACCA GF., SCRIBANO A., SEGLER S., SEIDEL S., SEIYA Y., SGANOS G., SGOLACCHIA A., SHAPIRO M., SHAW NM., SHEN Q., SHEPARD PF., SHIMOJIMA M., SHOCHET M., SIEGRIST J., SILL A., SINERVO P., SINGH P., SKARHA J., SLIWA K., SMITH DA., SNIDER FD., SONG L., SONG T., SPALDING J., SPIEGEL L., SPHICAS P., SPIES A., STANCO L., STEELE J., STEFANINI K., STRAHL K., STRAIT J., STUART D., SULLIVAN G., SUMOROK K., SWARTZ RL., TAKAHASHI T., TAKIKAWA K., TARTARELLI F., TAYLOR W., TERAMOTO Y., TETHER S., THERIOT D., THOMAS J., THOMAS TL., THUN R., TIMKO M., TIPTON P., TITOV A., TKACZYK S., TOLLEFSON K., TOLLESTRUP A., TONNI SON J., DETROCONIZ JF., TSENG J., TURCOTTE M., TURINI N., UEMURA N., UKEGAWA F., UNAL G., VANDENBRINK S., VEJCIK S., VIDAL R., VONDRACEK M., WAGNER RG., WAGNER RL., WAINER N., WALKER RC., WANG G., WANG J., WANG MJ., WANG QF., WARBURTON A., WATTS G., WATTS T., WEBB R., WENDT C., WENZEL H., WESTER WC., WESTHUSING T., WICKLUND AB., WILKINSON R., WILLIAMS HH., WILSON P., WINER BL., WOLINSKI J., WU DY., WU X., WYSS J., YAGIL A., YAO W., YASUOKA K., YE Y., YEH GP., YEH P., YIN M., YOH J., YOSHIDA T., YOVANOVITCH D., YU I., YUN JC., ZANETTI A., ZETTI F., ZHANG L., ZHANG S., ZHANG W., ZUCCHELLI S.
Autors Affiliation: GONNE NATL LAB,ARGONNE,IL 60439; BRANDEIS UNIV,WALTHAM,MA 02254; UNIV BOLOGNA,IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY; UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024; DUKE UNIV,DURHAM,NC 27708; FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510; IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY; HARVARD UNIV,CAMBRIDGE,MA 02138; UNIV ILLINOIS,URBANA,IL 61801; MCGILL UNIV,INST PARTICLE PHYS,MONTREAL H3A 2T8,PQ,CANADA; UNIV TORONTO,TORONTO M5S 1A7,ON,CANADA; JOHNS HOPKINS UNIV,BALTIMORE,MD 21218; UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720; MIT,CAMBRIDGE,MA 02139; UNIV MICHIGAN,ANN ARBOR,MI 48109; MICHIGAN STATE UNIV,E LANSING,MI 48824; UNIV NEW MEXICO,ALBUQUERQUE,NM 87131; OSAKA CITY UNIV,OSAKA 588,JAPAN; UNIV PADUA,INST NAZL FIS NUCL,SEZ PADOVA,I-35131 PADUA,ITALY; UNIV PENN,PHILADELPHIA,PA 19104; UNIV PITTSBURGH,PITTSBURGH,PA 15260; UNIV PISA,IST NAZL FIS NUCL,I-56 100 PISA,ITALY; SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY; PURDUE UNIV,W LAFAYETTE,IN 47907; UNIV ROCHESTER,ROCHESTER,NY 14627; ROCKEFELLER UNIV,NEW YORK,NY 10021; RUTGERS STATE UNIV,PISCATAWAY,NJ 08854; ACAD SINICA,TAIPEI 11529,TAIWAN; SUPERCONDUCTING SUPER COLLIDER LAB,DALLAS,TX 75237; TEXAS A&M UNIV,COLLEGE STN,TX 77843; UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN; TUFTS UNIV,MEDFORD,MA 02155; UNIV WISCONSIN,MADISON,WI 53706; YALE UNIV,NEW HAVEN,CT 06511; UNIV CHICAGO,CHICAGO,IL 60637.
Abstract: We present the results of a search for the top quark in 19.3 pb(-1) of pp $($) over bar$$ collisions at root s = 1.8 TeV. The data were collected at the Fermilab Tevatron collider using the Collider Detector at Fermilab (CDF). The search includes standard model tt $($) over bar$$ decays to final states eevv $$($) over bar e mu vv $$($) over bar, and mu mu vv $$($) over bar; as well as e+v+ jets or mu+v+ jets. In the (e,mu)+v+ jets channel we search for b quarks from r decays via secondary vertex identification and via semileptonic decays of the b and cascade c quarks. In the dilepton final states we find two events with a background of 0.56(-0.13)(+0.25) events. In the e,mu)+v+ jets channel with a b identified via a secondary vertex, we find six events with a background of 2.3 +/- 0.3. With a b identified via a semileptonic decay, we find seven events with a background of 3.1 +/- 0.3. The secondary vertex and semileptonic-decay samples have three events in common. The probability that the observed yield is consistent with the background is estimated to be 0.26%. The statistics are too limited to firmly establish the existence of the top quark; however, a natural interpretation of the excess is that it is due to tt $($) over bar$$ production. We present several cross-checks. Some support this hypothesis; others do not. Under the assumption that the excess yield over background is due to tt, constrained fitting on a subset of the events yields a mass of 174 +/- 10(-12)(+13) GeV/c(2) for the top quark. The tt $($) over bar$$ cross section, using this top quark mass to compute the acceptance, is measured to be 13.9(-4.8)(+6.1) pb.
Journal/Review: PHYSICAL REVIEW D
Volume: 50 (5) Pages from: 2966 to: 3026
KeyWords: = 1.8 Tev; Alpha-s Calculation; W-gluon Fusion; Hadronic Collisions; Pbarp Collisions; P(p)over-bar Collisions; Parton Distributions; Fermilab Tevatron; Ppbar Collisions; Cross-sectionDOI: 10.1103/PhysRevD.50.2966Citations: 488data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-20References taken from IsiWeb of Knowledge: (subscribers only)