EVIDENCE FOR TOP-QUARK PRODUCTION IN P(OVER-BAR)-P COLLISIONS AT ROOT=1.8-TEV

被引：367

作者：

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

机构：

[1] BRANDEIS UNIV,WALTHAM,MA 02254

[2] UNIV BOLOGNA,IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY

[3] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[4] UNIV CHICAGO,CHICAGO,IL 60637

[5] DUKE UNIV,DURHAM,NC 27708

[6] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY

[7] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[8] HARVARD UNIV,CAMBRIDGE,MA 02138

[9] UNIV ILLINOIS,URBANA,IL 61801

[10] MCGILL UNIV,INST PARTICLE PHYS,MONTREAL H3A 2T8,QUEBEC,CANADA

[11] UNIV TORONTO,TORONTO M5S 1A7,ONTARIO,CANADA

[12] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[13] NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN

[14] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[15] MIT,CAMBRIDGE,MA 02139

[16] OSAKA CITY UNIV,OSAKA 588,JAPAN

[17] UNIV MICHIGAN,ANN ARBOR,MI 48109

[18] UNIV NEW MEXICO,ALBUQUERQUE,NM 87131

[19] UNIV PADUA,IST NAZL FIS NUCL,I-35131 PADUA,ITALY

[20] UNIV PENN,PHILADELPHIA,PA 19104

[21] ACAD SINICA,TAIPEI 11529,TAIWAN

[22] UNIV PITTSBURGH,PITTSBURGH,PA 15260

[23] SUPERCOND SUPER COLLIDER LAB,DALLAS,TX 75237

[24] IST NAZL FIS NUCL,I-56100 PISA,ITALY

[25] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY

[26] PURDUE UNIV,W LAFAYETTE,IN 47907

[27] UNIV ROCHESTER,ROCHESTER,NY 14627

[28] ROCKEFELLER UNIV,NEW YORK,NY 10021

[29] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

[30] TEXAS A&M UNIV,COLLEGE STN,TX 77843

[31] TUFTS UNIV,MEDFORD,MA 02155

[32] UNIV WISCONSIN,MADISON,WI 53706

[33] YALE UNIV,NEW HAVEN,CT 06511

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.73.225

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We summarize a search for the top quark with the Collider Detector at Fermilab (CDF) in a sample of ppBAR collisions at square-root s = 1.8 TeV with an integrated luminosity of 19.3 pb-1. We find 12 events consistent with either two W bosons, or a W boson and at least one b jet. The probability that the measured yield is consistent with the background is 0.26%. Though the statistics are too limited to establish firmly the existence of the top quark, a natural interpretation of the excess is that it is due to ttBAR production. Under this assumption, constrained fits to individual events yield a top quark mass of 174 +/- 10(-12)+13 GeV/c2. The ttBAR production cross section is measured to be 13.9(-4.8)+6.1 pb.

引用

页码：225 / 231

页数：7

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