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

被引：23

作者：

Abreu, P ^{[1
]}

Adam, W

Adye, T

Adzic, P

Albrecht, Z

Alderweireld, T

Alekseev, GD

Alemany, R

Allmendinger, T

Allport, PP

Almehed, S

Amaldi, U

Amapane, N

Amato, S

Anashkin, E

Anassontzis, EG

Andersson, P

Andreazza, A

Andringa, S

Anjos, N

Antilogus, P

Apel, WD

Arnoud, Y

Åsman, B

Augustin, JE

Augustinus, A

Baillon, P

Ballestrero, A

Bambade, P

Barao, F

Barbiellini, G

Barbier, R

Bardin, DY

Barker, G

Baroncelli, A

Battaglia, M

Baubillier, M

Becks, KH

Begalli, M

Behrmann, A

Bellunato, TF

Belokopytov, Y

Belous, K

Benekos, NC

Benvenuti, AC

Berat, C

Berggren, M

Berntzon, L

Bertrand, D

Besancon, M

机构：

[1] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[2] Univ Instelling Antwerp, Dept Phys, B-2610 Wilrijk, Belgium

[3] ULB VUB, IIHE, B-1050 Brussels, Belgium

[4] Univ Mons, Fac Sci, B-7000 Mons, Belgium

[5] Univ Athens, Phys Lab, GR-10680 Athens, Greece

[6] Univ Bergen, Dept Phys, NO-5007 Bergen, Norway

[7] Univ Bologna, Dipartmento Fis, IT-40126 Bologna, Italy

[8] Ist Nazl Fis Nucl, IT-40126 Bologna, Italy

[9] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil

[10] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453 Rio De Janeiro, Brazil

[11] Univ Estadual Rio De Janeiro, Inst Fis, Rio De Janeiro, Brazil

[12] Comenius Univ, Fac Math & Phys, SK-84215 Bratislava, Slovakia

[13] Coll France, Phys Corpusculaire Lab, IN2P3, CNRS, FR-75231 Paris 05, France

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

[15] Inst Rech Subatom, IN2P3, CNRS, ULP, FR-67037 Strasbourg, France

[16] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece

[17] CAS, High Energy Phys Div, Inst Phys, FZU, CZ-18040 Prague, Czech Republic

[18] Univ Genoa, Dipartimento Fis, IT-16146 Genoa, Italy

[19] Ist Nazl Fis Nucl, IT-16146 Genoa, Italy

[20] Univ Grenoble 1, CNRS, IN2P3, Inst Sci Nucl, FR-38026 Grenoble, France

[21] HIP, Helsinki Inst Phys, FI-00014 Helsinki, Finland

[22] Dubna Joint Nucl Res Inst, Head PO, RU-101000 Moscow, Russia

[23] Univ Karlsruhe, Inst Expt Kernphys, DE-76128 Karlsruhe, Germany

[24] Inst Nucl Phys, PL-30055 Krakow, Poland

[25] Univ Min & Met, PL-30055 Krakow, Poland

[26] Univ Paris Sud, Accelerateur Lineaire Lab, IN2P3, CNRS, FR-91405 Orsay, France

[27] FCUL, IST, LIP, PT-1000 Lisbon, Portugal

[28] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[29] Univ Paris 06, CNRS, LPNHE, IN2P3, FR-75252 Paris 05, France

[30] Univ Paris 07, FR-75252 Paris 05, France

[31] Univ Lund, Dept Phys, SE-22363 Lund, Sweden

[32] Univ Lyon 1, CNRS, IPNL, IN2P3, FR-69622 Villeurbanne, France

[33] Univ Aix Marseille 2, CPP, IN2P3, CNRS, FR-13288 Marseille 09, France

[34] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy

[35] Ist Nazl Fis Nucl, IT-20133 Milan, Italy

[36] Univ Milano Bicocca, Dipartimento Fis, IT-20126 Milan, Italy

[37] Ist Nazl Fis Nucl, IT-20126 Milan, Italy

[38] Charles Univ, IPNP, MFF, CZ-18000 Prague 8, Czech Republic

[39] NIKHEF, NL-1009 DB Amsterdam, Netherlands

[40] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece

[41] Univ Oslo, Dept Phys, NO-1000 Oslo 3, Norway

[42] Univ Oviedo, Dept Fis, ES-33007 Oviedo, Spain

[43] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

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

[45] Univ Padua, Dipartimento Fis, IT-35131 Padua, Italy

[46] Ist Nazl Fis Nucl, IT-35131 Padua, Italy

[47] Univ Rome 2, Dipartimento Fis, IT-00173 Rome, Italy

[48] Ist Nazl Fis Nucl, IT-00173 Rome, Italy

[49] Univ Roma 3, Dipartimento Fis, IT-00146 Rome, Italy

[50] Ist Nazl Fis Nucl, IT-00146 Rome, Italy

来源：

PHYSICS LETTERS B | 2001年 / 511卷 / 2-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(01)00453-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the FV mass and width has been performed by the DELPHI Collaboration using the data collected during 1998. The data sample has an integrated luminosity of 155 pb(-1) and an average centre-of-mass energy of 188.6 GeV. Results are obtained by applying the method of direct reconstruction of the mass of the W from its decay products in both the W+W- --> l (v) over bar (l)q (q) over bar ' and W+W- --> q (q) over bar '(q) over barq ' channels. The W mass result for the 1998 data set is M-W = 80.387 +/- 0.087(stat) +/- 0.034(syst) +/- 0.017(LEP) +/- 0.035(FSI) GeV/c(2), where FSI represents the uncertainty due to final state interaction effects in the q (q) over bar 'q (q) over bar ' channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator Combining this result with Ghost: previously published by the DELPHI Collaboration gives the result M-W = 80.359 +/- 0.074(stat) +/- 0.032(syst) +/- 0.017(LEP) +/- 0.033(FSI) GeV/c(2). The combined value for the W width is Gamma (W) = 2.266 +/- 0.176(stat) +/- 0.056(syst) +/- 0.052(FSI) GeV/c(2). (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：159 / 177

页数：19

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