MEASUREMENT OF THE RATIO SIGMA-B(P(P)OVER-BAR-]W-]E-NU)/SIGMA-B(P(P)OVER-BAR-]Z(O)-]EE) IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1800 GEV

被引：57

作者：

ABE, F

ALBROW, MG

AMENDOLIA, SR

AMIDEI, D

ANTOS, J

ANWAYWIESE, C

APOLLINARI, G

ARETI, H

ATAC, M

AUCHINCLOSS, P

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

BOKHARI, W

BOLOGNESI, V

BORTOLETTO, D

BOSWELL, C

BOULOS, T

BRANDENBURG, G

BROMBERG, C

机构：

[1] ARGONNE NATL LAB, ARGONNE, IL 60439 USA

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

[3] BRANDEIS UNIV, WALTHAM, MA 02254 USA

[4] UNIV CALIF LOS ANGELES, LOS ANGELES, CA 90024 USA

[5] UNIV CHICAGO, CHICAGO, IL 60637 USA

[6] DUKE UNIV, DURHAM, NC 27708 USA

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

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

[9] HARVARD UNIV, CAMBRIDGE, MA 02138 USA

[10] UNIV ILLINOIS, URBANA, IL 61801 USA

[11] MCGILL UNIV, INST PARTICLE PHYS, MONTREAL, PQ H3A 2T8, CANADA

[12] UNIV TORONTO, TORONTO, ON M5S 1A7, CANADA

[13] JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA

[14] LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA

[15] MIT, CAMBRIDGE, MA 02139 USA

[16] UNIV MICHIGAN, ANN ARBOR, MI 48109 USA

[17] MICHIGAN STATE UNIV, E LANSING, MI 48824 USA

[18] UNIV NEW MEXICO, ALBUQUERQUE, NM 87131 USA

[19] OSAKA CITY UNIV, OSAKA 588, JAPAN

[20] UNIV PADUA, IST NAZL FIS NUCL, SEZ PADOVA, I-35131 PADUA, ITALY

[21] UNIV PENN, PHILADELPHIA, PA 19104 USA

[22] UNIV PITTSBURGH, PITTSBURGH, PA 15260 USA

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

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

[25] PURDUE UNIV, W LAFAYETTE, IN 47907 USA

[26] UNIV ROCHESTER, ROCHESTER, NY 14627 USA

[27] ROCKEFELLER UNIV, NEW YORK, NY 10021 USA

[28] RUTGERS STATE UNIV, PISCATAWAY, NJ 08854 USA

[29] ACAD SINICA, TAIPEI 11529, TAIWAN

[30] SUPERCONDUCTING SUPER COLLIDER LAB, DALLAS, TX 75237 USA

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

[32] TEXAS TECH UNIV, LUBBOCK, TX 79409 USA

[33] UNIV TSUKUBA, TSUKUBA, IBARAKI 305, JAPAN

[34] TUFTS UNIV, MEDFORD, MA 02155 USA

[35] UNIV WISCONSIN, MADISON, WI 53706 USA

[36] YALE UNIV, NEW HAVEN, CT 06511 USA

来源：

PHYSICAL REVIEW D | 1995年 / 52卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.52.2624

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analysis of data from p ($) over bar p collisions at a center-of-mass energy of root s = 1800 GeV. A measurement is made of the ratio R = sigma B(p ($) over bar p --> W --> ev)/sigma B(p ($) over bar p --> Z(0) --> ee). The data represent 19.6 pb(-1) collected by the Collider Detector at Fermilab during the 1992-1993 collider run of the Fermilab Tevatron. We find R = 10.90 +/- 0.32(stat)+/-0.29(syst), and from this value we extract a measurement of the W --> ev branching ratio Gamma(W --> ev)/Gamma(W) = 0.1094+/-0.0033(stat)+/-0.0031(syst). From this branching ratio we set a limit on the top quark mass of mt > 62 GeV/c(2) at the 95% confidence level. In contrast with direct searches for the top quark, this limit makes no assumptions about the allowed decay modes of the top quark. In addition, we use a calculation of the leptonic width Gamma(W --> ev) to obtain a value for the W total decay width:Gamma(W) = 2.064+/-0.060(stat)+/-0.059(syst) GeV.

引用

页码：R2624 / +

页数：1

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