MEASUREMENT OF THE PRODUCTION AND MUONIC DECAY-RATE OF W AND Z BOSONS IN P(P)BAR COLLISIONS AT ROOT-S = 1.8 TEV

被引：41

作者：

ABE, F

AMIDEI, D

APOLLINARI, G

ATAC, M

AUCHINCLOSS, P

BADEN, AR

BACCHETTA, N

BAILEY, MW

BAMBERGER, A

DEBARBARO, P

BARNETT, BA

BARBAROGALTIERI, A

BARNES, VE

BAUMANN, T

BEDESCHI, F

BEHRENDS, S

BELFORTE, S

BELLETTINI, G

BELLINGER, J

BENJAMIN, D

BENSINGER, J

BERETVAS, A

BERGE, JP

BERTOLUCCI, S

BHADRA, S

BINKLEY, M

BISELLO, D

BLAIR, R

BLOCKER, C

BODEK, A

BOLOGNESI, V

BOOTH, AW

BOSWELL, C

BRANDENBURG, G

BROWN, D

BUCKLEYGEER, E

BUDD, HS

BUSETTO, G

BYONWAGNER, A

BYRUM, KL

CAMPAGNARI, C

CAMPBELL, M

CANER, A

CAREY, R

CARITHERS, W

CARLSMITH, D

CARROLL, JT

CASHMORE, R

CASTRO, A

CERVELLI, F

机构：

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

[2] BRANDEIS UNIV, WALTHAM, MA 02254 USA

[3] UNIV CHICAGO, CHICAGO, IL 60637 USA

[4] FERMI NATL ACCELERATOR LAB, BATAVIA, IL 60510 USA

[5] IST NAZL FIS NUCL, LAB NAZL FRASCATI, FRASCATI, ITALY

[6] HARVARD UNIV, CAMBRIDGE, MA 02138 USA

[7] UNIV ILLINOIS, URBANA, IL 61801 USA

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

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

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

[11] UNIV PENN, PHILADELPHIA, PA 19104 USA

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

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

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

[15] UNIV ROCHESTER, ROCHESTER, NY 14627 USA

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

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

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

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

[20] TUFTS UNIV, MEDFORD, MA 02155 USA

[21] UNIV WISCONSIN, MADISON, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.69.28

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An analysis of proton-antiproton collisions at square-root s = 1.8 TeV recorded with the Collider Detector at Fermilab (CDF) yields sigma(ppBAR --> WX)B(W --> mu-nu) = 2.21 +/- 0.22 nb and sigma(ppBAR --> ZX)B(Z --> mu+mu-) = 0.226 +/- 0.032 nb. The ratio is R(mu) = sigma(W)B(W --> mu-nu)/sigma(Z)B(Z --> mu+mu-) = 9.8 +/- 1.2. Combining with previous CDF electron results gives sigma(W)B(W --> l-nu) = 2.20 +/- 0.20 nb, sigma(Z)B(Z- l+l-) = 0.214 +/- 0.023 nb, and R(l) = 10.0 +/- 0.8. We extract the ratios of the coupling constants g(mu)/g(e) and g(tau)/g(mu). Using standard model assumptions we deduce the inverse branching ratio B-1(W --> l-nu), the width GAMMA(W), and a decay-mode-independent lower bound on the top quark mass of 45 GeV/c2 (95% C.L.).

引用

页码：28 / 32

页数：5

共 19 条

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