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Determination of the LEP beam energy using radiative fermion-pair events
Wilson, Graham Wallace OPAL Collaboration Abbiendi, G. Ainsley, C. Åkesson, P. F. Alexander, G. Allison, J. Amaral, P. Anagnostou, G. Anderson, K. J.
Wilson, Graham Wallace
OPAL Collaboration
Abbiendi, G.
Ainsley, C.
Åkesson, P. F.
Alexander, G.
Allison, J.
Amaral, P.
Anagnostou, G.
Anderson, K. J.
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Abstract
We present a determination of the LEP beam energy using “radiative return” fermion-pair events recorded at centre-of-mass energies from 183 to 209 GeV. We find no evidence of a disagreement between the OPAL data and the LEP Energy Working Group's standard calibration. Including the energy-averaged 11 MeV uncertainty in the standard determination, the beam energy we obtain from the OPAL data is higher than that obtained from the LEP calibration by View the MathML source0±34(stat.)±27(syst.)MeV.
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2004-12-16
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Elsevier
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Abbiendi, G. et al. (2004). "Determination of the LEP beam energy using radiative fermion-pair events." Physics Letters B, 604(1-2):31-47. http://www.dx.doi.org/10.1016/j.physletb.2004.10.046.