MEASUREMENT OF THE MASS OF THE Z-BOSON AND THE ENERGY CALIBRATION OF LEP

Authors
ARNAUDON L ASSMANN R BILLAN J BIRR W BLONDEL A BOBBINK G BORDRY F BURKHARDT H CROZON M DEHNING B FAUGIER A GASCON J GIACHINO R GRANT A GOURBER JP HARTON JL HATTON V HAWKES CM HENRICHSEN KN HOFMANN A JACOBSEN R KNUDSEN L KOUTCHOUK JP MUSOLINO G MYERS S OLSEN R PANMAN J PESCHARDT E PLACIDI M PLANE D QUAST G READ A ROLANDI L SCHMIDT R WACHSMUTH H BUSKULIC D ABREU P ADRIANI O ACTON PD
Citation
L. Arnaudon et al., MEASUREMENT OF THE MASS OF THE Z-BOSON AND THE ENERGY CALIBRATION OF LEP, Physics letters. Section B, 307(1-2), 1993, pp. 187-193
Citations number
31
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
307
Issue
1-2
Year of publication
1993
Pages
187 - 193
Database
ISI
SICI code
0370-2693(1993)307:1-2<187:MOTMOT>2.0.ZU;2-S
Abstract
The mass of the Z boson has been determined by combining the data from the four LEP experiments ALEPH, DELPHI, L3 and OPAL. The dominant err or arises from uncertainties in the calibration of the energy of the b eams in LEP. A programme of investigations including energy calibratio n by resonant depolarization of transversely polarized beams has led t o a significant reduction of the uncertainty on the Z mass compared wi th the precision achieved with the 1990 data. The mass of the Z is mea sured to be M(Z) = (91.187 +/- 0.007) GeV.