MEASUREMENTS OF THE DECAY OF THE Z0 INTO LEPTON PAIRS

被引：36

作者：

AKRAWY, MZ

ALEXANDER, G

ALLISON, J

ALLPORT, PP

ANDERSON, KJ

ARMITAGE, JC

ARNISON, GTJ

ASHTON, P

AZUELOS, G

BAINES, JTM

BALL, AH

BANKS, J

BARKER, GJ

BARLOW, RJ

BATLEY, JR

BAVARIA, G

BEARD, C

BECK, F

BELL, KW

BELLA, G

BETHKE, S

BIEBEL, O

BLOODWORTH, IJ

BOCK, P

BOERNER, H

BREUKER, H

BROWN, RM

BRUN, R

BUIJS, A

BURCKHART, HJ

CAPILUPPI, P

CARNEGIE, RK

CARTER, AA

CARTER, JR

CHANG, CY

CHARLTON, DG

CHRIN, JTM

COHEN, I

CONBOY, JE

COUCH, M

COUPLAND, M

CUFFIANI, M

DADO, S

DALLAVALLE, GM

DAVIES, OW

DENINNO, MM

DIECKMANN, A

DITTMAR, M

DIXIT, MS

DUCHESNEAU, D

机构：

[1] TEL AVIV UNIV,DEPT PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL

[2] UNIV MANCHESTER,SCHUSTER LAB,DEPT PHYS,MANCHESTER M13 9PL,LANCS,ENGLAND

[3] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

[4] UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637

[5] CARLETON UNIV,DEPT PHYS,OTTAWA K1S 5B6,ONTARIO,CANADA

[6] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[7] UNIV MONTREAL,PHYS NUCL LAB,MONTREAL H3C 3J7,QUEBEC,CANADA

[8] UNIV MARYLAND,DEPT PHYS & ASTRON,COLLEGE PK,MD 20742

[9] CERN,CH-1211 GENEVA 23,SWITZERLAND

[10] UNIV HEIDELBERG,INST PHYS,W-6900 HEIDELBERG,GERMANY

[11] UNIV BONN,INST PHYS,W-5300 BONN 1,GERMANY

[12] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

[13] UNIV BOLOGNA,DEPARTIMENTO FIS,I-40126 BOLOGNA,ITALY

[14] UNIV LONDON UNIV COLL,LONDON WC1E 6BT,ENGLAND

[15] UNIV LONDON BIRKBECK COLL,LONDON WC1E 7HV,ENGLAND

[16] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL

[17] UNIV CALIF RIVERSIDE,DEPT PHYS,RIVERSIDE,CA 92521

[18] NATL RES COUNCIL CANADA,HERZBERG INST ASTROPHYS,OTTAWA K1A 0R6,ONTARIO,CANADA

[19] WEIZMANN INST SCI,DEPT NUCL PHYS,IL-76100 REHOVOT,ISRAEL

[20] CENS,DPHPE,F-91191 GIF SUR YVETTE,FRANCE

[21] UNIV TOKYO,INT CTR ELEMENTARY PARTICLE PHYS,TOKYO 113,JAPAN

[22] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

[23] KOBE UNIV,KOBE 657,JAPAN

[24] UNIV FREIBURG,FAK PHYS,W-7800 FREIBURG,GERMANY

[25] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

[26] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

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

[28] BRUNEL UNIV,UXBRIDGE UB8 3PH,MIDDX,ENGLAND

来源：

PHYSICS LETTERS B | 1990年 / 235卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(90)91982-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a measurement of the processes e+e-→e+e-, e+e-→μ+μ-, and e+e-→τ+τ- near the Z0 pole. On the basis of 163 e+e-, 101 μ+μ- and 87 τ+τ- events we obtain Γee=89±4±4 MeV, Γμμ=85±9±6 MeV and Γττ=87±10±8 MeV, compatible with the standard model. Combining these with our previous results on hadronic Z0 decays, we find a hadronic width Γhad=1787±81±90 MeV and an invisible width Γinv=552±85±71 MeV. © 1990.

引用

页码：379 / 388

页数：10

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