Measurement of the mass and width of the W boson in e+e- collisions at 189 GeV

被引：20

作者：

Abbiendi, G ^{[1
]}

Ackerstaff, K

Ainsley, C

Åkesson, PF

Alexander, G

Allison, J

Anderson, KJ

Arcelli, S

Asai, S

Ashby, SF

Axen, D

Azuelos, G

Bailey, I

Ball, AH

Barberio, E

Barlow, RJ

Baumann, S

Behnke, T

Bell, KW

Bella, G

Bellerive, A

Benelli, G

Bentvelsen, S

Bethke, S

Biebel, O

Bloodworth, IJ

Boeriu, O

Bock, P

Böhme, J

Bonacorsi, D

Boutemeur, M

Braibant, S

Bright-Thomas, P

Brigliadori, L

Brown, RM

Burckhart, HJ

Cammin, J

Capiluppi, P

Carnegie, RK

Carter, AA

Carter, JR

Chang, CY

Charlton, DG

Clarke, PEL

Clay, E

Cohen, I

Cooke, OC

Couchman, J

Couyoumtzelis, C

Coxe, RL

机构：

[1] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy

[2] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[4] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[5] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[6] Cavendish Lab, Cambridge CB3 0HE, England

[7] Carleton Univ, Dept Phys, Ottawa Carleton Inst Phys, Ottawa, ON K1S 5B6, Canada

[8] Carleton Univ, Ctr Res Particle Phys, Ottawa, ON K1S 5B6, Canada

[9] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[10] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[11] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

[12] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[13] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[14] Queen Mary Univ London, London E1 4NS, England

[15] Tech Hsch Aachen, Inst Phys 3, D-52056 Aachen, Germany

[16] UCL, London WC1E 6BT, England

[17] Univ Manchester, Dept Phys, Schuster Lab, Manchester M13 9PL, Lancs, England

[18] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[19] Univ Montreal, Phys Nucl Lab, Montreal, PQ H3C 3J7, Canada

[20] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

[21] Rutherford Appleton Lab, CLRC, Didcot OX11 0QX, Oxon, England

[22] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[23] Tel Aviv Univ, Dept Phys & Astron, IL-69978 Tel Aviv, Israel

[24] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[25] Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan

[26] Kobe Univ, Kobe, Hyogo 6578501, Japan

[27] Weizmann Inst Sci, Particle Phys Dept, IL-76100 Rehovot, Israel

[28] Univ Hamburg, DESPA, Inst Expt Phys 2, D-22607 Hamburg, Germany

[29] Univ Victoria, Dept Phys, Victoria, BC V8W 3P6, Canada

[30] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada

[31] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[32] Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

[33] Inst Nucl Res, H-4001 Debrecen, Hungary

[34] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[35] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[36] TRIUMF, Vancouver, BC V6T 2A3, Canada

[37] Nucl Res Inst, Debrecen, Hungary

[38] Univ Min & Met Krakow, Krakow, Poland

[39] Univ Debrecen, Dept Expt Phys, Debrecen, Hungary

[40] Max Planck Inst, Munich, Germany

[41] Res Inst Particle & Nucl Phys, Budapest, Hungary

[42] Univ Calif Riverside, High Energy Phys Grp, Riverside, CA 92521 USA

[43] CERN, CH-1211 Geneva 23, Switzerland

来源：

PHYSICS LETTERS B | 2001年 / 507卷 / 1-4期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会; 以色列科学基金会; 日本学术振兴会;

关键词：

D O I：

10.1016/S0370-2693(01)00131-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The mass and width of the W boson are determined in e(+)e(-) collisions at LEP using 183 pb(-1) of data recorded at a centre-of-mass energy roots = 189 GeV with the OPAL detector, The invariant mass distributions from 970 W+W- --> qqqq and 1118 W+W- --> qq(l)v(l) candidate events are used to measure the mass of the W boson, M-W = 80.451 +/- 0.076 (stat.) +/- 0.049 (syst.) GeV, A direct measurement of the width of the W boson gives Gamma (W) = 2.09 +/- 0.18 (stat,) +/- 0.09 (syst,) GeV, The results are combined with previous OPAL results from 78 pb(-1) of data recorded with roots from 161 to 183 GeV, to obtain: M-W = 80.432 +/- 0.066 (stat,) +/- 0.035 (syst,) GeV, Gamma (W) = 2.04 +/- 0,16 (stat,) +/- 0.09 (syst.) GeV, The consistency of the direct measurement of Mw with that inferred from other measurements of electroweak parameters provides an important test of the Standard Model of electroweak interactions. (C) 2001 Elsevier Science B,V, All rights reserved.

引用

页码：29 / 46

页数：18

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