Radiative returns to the Z resonance (Zγ 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 be: View the MathML source in good agreement with the precise determination by the LEP energy working group of 182.652±0.050 GeV. If applied to the measurement of the W mass, its precision translates into a systematic error on MW which is smaller than the statistical error achieved from the corresponding dataset.

Determination of the LEP centre-of-mass energy from Zγ events / R. Barate, D. Decamp, P. Ghez, C. Goy, S. Jezequel, J.-P. Lees, F. Martin, E. Merle, M.-N. Minard, B. Pietrzyk, H. Przysiezniak, R. Alemany, M.P. Casado, M. Chmeissani, J.M. Crespo, E. Fernandez, M. Fernandez-Bosman, Ll. Garrido, E. Graugès, A. Juste, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 464:(1999), pp. 339-349. [10.1016/S0370-2693(99)00903-X]

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

FOCARDI, ETTORE;CIULLI, VITALIANO;
1999

Abstract

Radiative returns to the Z resonance (Zγ 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 be: View the MathML source in good agreement with the precise determination by the LEP energy working group of 182.652±0.050 GeV. If applied to the measurement of the W mass, its precision translates into a systematic error on MW which is smaller than the statistical error achieved from the corresponding dataset.
1999
464
339
349
R. Barate;D. Decamp;P. Ghez;C. Goy;S. Jezequel;J.-P. Lees;F. Martin;E. Merle;M.-N. Minard;B. Pietrzyk;H. Przysiezniak;R. Alemany;M.P. Cas...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/639923
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