CHARGE ASYMMETRY IN W-BOSON DECAYS PRODUCED IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV

被引：61

作者：

ABE, F

ALBROW, MG

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

BUCKLEYGEER, E

BUDD, HS

机构：

[1] ARGONNE NATL LAB,ARGONNE,IL 60439

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

[3] BRANDEIS UNIV,WALTHAM,MA 02254

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

[5] UNIV CHICAGO,CHICAGO,IL 60637

[6] DUKE UNIV,DURHAM,NC 27708

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

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

[9] HARVARD UNIV,CAMBRIDGE,MA 02138

[10] UNIV ILLINOIS,URBANA,IL 61801

[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

[14] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[15] MIT,CAMBRIDGE,MA 02139

[16] UNIV MICHIGAN,ANN ARBOR,MI 48109

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

[18] UNIV NEW MEXICO,ALBUQUERQUE,NM 87131

[19] OSAKA CITY UNIV,OSAKA 588,JAPAN

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

[21] UNIV PENN,PHILADELPHIA,PA 19104

[22] UNIV PITTSBURGH,PITTSBURGH,PA 15260

[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

[26] UNIV ROCHESTER,ROCHESTER,NY 14627

[27] ROCKEFELLER UNIV,NEW YORK,NY 10021

[28] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

[29] ACAD SINICA,TAIPEI 11529,TAIWAN

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

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

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

[33] TUFTS UNIV,MEDFORD,MA 02155

[34] UNIV WISCONSIN,MADISON,WI 53706

[35] YALE UNIV,NEW HAVEN,CT 06511

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.74.850

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Charge asymmetry has been measured using 19 039 W decays recorded by the Collider Detector at Fermilab during the 1992-93 run of the Tevatron Collider. The asymmetry is sensitive to the ratio of d and u quark distributions to x<0.01 at Q2MW2, where nonperturbative effects are minimal. It is found that of the two current sets of parton distributions, those of Martin, Roberts, and Stirling are favored over the sets most recently produced by the CTEQ Collaboration. The W asymmetry data provide stronger constraints on du ratio than the recent measurements of F2μnF2μp which are limited by uncertainties originating from deuteron corrections. © 1995 The American Physical Society.

引用

页码：850 / 854

页数：5

共 21 条

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