Determination of the LEP centre-of-mass energy from Zγ events

被引：7

作者：

Barate, R ^{[1
]}

Decamp, D

Ghez, P

Goy, C

Jezequel, S

Lees, JP

Martin, F

Merle, E

Minard, MN

Pietrzyk, B

Przysiezniak, H

Alemany, R

Casado, MP

Chmeissani, M

Crespo, JM

Fernandez, E

Fernandez-Bosman, M

Garrido, L

Graugès, E

Juste, A

Martinez, M

Merino, G

Miquel, R

Mir, LM

Morawitz, P

Pacheco, A

Park, IC

Riu, I

Colaleo, A

Creanza, D

de Palma, M

Iaselli, G

Maggi, G

Maggi, M

Nuzzo, S

Ranieri, A

Raso, G

Ruggieri, F

Selvaggi, G

Silvestris, L

Tempesta, P

Tricomi, A

Zito, G

Huang, X

Lin, J

Ouyang, Q

Wang, T

Xie, Y

Xu, R

Xue, S

机构：

[1] CNRS, IN2P3, Phys Particules Lab, F-74019 Annecy Le Vieux, France

[2] Univ Autonoma Barcelona, Inst Fis Altes Energies, Bellaterra 08193, Barcelona, Spain

[3] Ist Nazl Fis Nucl, Dipartimento Fis, Sez Bari, I-70126 Bari, Italy

[4] Acad Sinica, Inst High Energy Phys, Beijing, Peoples R China

[5] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland

[6] Univ Clermont Ferrand, IN2P3, CNRS, Phys Corpusculaire Lab, F-63177 Clermont Ferrand, France

[7] Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[8] Democritos Nucl Res Ctr, GR-15310 Athens, Greece

[9] Ecole Polytech, Lab Phys Nucl & Hautes Energies, IN2P3, CNRS, F-91128 Palaiseau, France

[10] Univ Florence, Dipartimento Fis, Sez Firenze, Ist Nazl Fis Nucl, I-50125 Florence, Italy

[11] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA

[12] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[13] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[14] Univ Heidelberg, Inst Hochenergiephys, D-69120 Heidelberg, Germany

[15] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BZ, England

[16] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[17] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[18] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[19] Fac Sci Luminy, IN2P3, CNRS, Ctr Phys Particules, F-13288 Marseille, France

[20] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[21] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[22] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany

[23] Univ Paris 11, CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

[24] Univ Pisa, Ist Nazl Fis Nucl, Dipartimento Fis, Sez Fis, I-56010 Pisa, Italy

[25] Scuola Normale Super Pisa, I-56010 Pisa, Italy

[26] Univ London Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, Surrey, England

[27] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England

[28] Ctr Etud Saclay, CEA, DAPNIA, Serv Phys Particules, F-91191 Gif Sur Yvette, France

[29] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[30] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[31] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[32] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[33] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

[34] Univ Washington, Seattle, WA 98195 USA

[35] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[36] Univ Barcelona, Barcelona 08208, Spain

[37] Ist Nazl Fis Nucl, Sez Catania, Ctr Sciliano Fis Nucl & Struttura Mat, I-95129 Catania, Italy

[38] Univ Turin, Ist Fis Gen, I-10125 Turin, Italy

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

[40] CNR, Ist Cosmogeofis, I-10133 Turin, Italy

来源：

PHYSICS LETTERS B | 1999年 / 464卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(99)00903-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Radiative returns to the Z resonance (Z gamma events) are used to determine the LEP2 centre-of-mass energy from the data collected with the ALEPH detector in 1997. The average centre-of-mass energy is measured to he: E(CM) = 182.50 +/- 0.19(stat.) +/- 0.08 (syst.) GeV in good agreement with the precise determination by the LEP energy working group of 182.652 +/- 0.050 GeV. Lf applied to the measurement of the W mass. its precision translates into a systematic error on M(W), which is smaller than the statistical error achieved from the corresponding dataset. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：339 / 349

页数：11

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