MEASUREMENT OF THE RATIO SIGMA-B(W-]E-NU)/SIGMA-B(Z(0)-]E+E-) IN P(OVER-BAR)-P COLLISIONS AT ROOT-S=1.8-TEV

被引：33

作者：

ABE, F

ALBROW, M

AMIDEI, D

ANWAYWIESE, C

APOLLINARI, G

ARETI, H

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

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

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

[6] DUKE UNIV,DURHAM,NC 27706

[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] OSAKA CITY UNIV,OSAKA 588,JAPAN

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

[15] UNIV NEW MEXICO,ALBUQUERQUE,NM 87131

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

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

[18] UNIV PENN,PHILADELPHIA,PA 19104

[19] YALE UNIV,NEW HAVEN,CT 06511

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

[21] UNIV PITTSBURGH,PITTSBURGH,PA 15260

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

[23] PURDUE UNIV,W LAFAYETTE,IN 47907

[24] UNIV ROCHESTER,ROCHESTER,NY 14627

[25] ROCKEFELLER UNIV,NEW YORK,NY 10021

[26] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

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

[28] TUFTS UNIV,MEDFORD,MA 02155

[29] UNIV WISCONSIN,MADISON,WI 53706

[30] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[31] MIT,CAMBRIDGE,MA 02139

[32] UNIV MICH,ANN ARBOR,MI 48824

[33] MICH STATE UNIV,E LANSING,MI 48824

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

来源：

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

关键词：

D O I：

10.1103/PhysRevLett.73.220

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a measurement of the ratio sigmaB(W --> eupsilon)/sigmaB(Z0 --> e+e-) in ppBAR collisions at square-root s = 1.8 TeV. The data represent an integrated luminosity of 21.7 pb-1 from the 1992-1993 run of the Collider Detector at Fermilab. We find sigmaB(W --> eupsilon)/sigmaB(Z0 --> e+e-) = 10.90 +/- 0.32(stat) +/- 0.29(syst). From this value, we extract a value for the W width, GAMMA(W) = 2.064 +/- 0.061(stat) +/- 0.059(syst) GeV, and the branching ratio, GAMMA(W --> eupsilon)/GAMMA(W) = 0.1094 +/- 0.0033(stat) +/- 0.0031(syst), and we set a decay-mode-independent limit on the top quark mass m(top) > 62 GeV/c2 at the 95% C.L.

引用

页码：220 / 224

页数：5

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