EP Seminar

Calibration of centre-of-mass energies at LEP 2 for a precise measurement of the W boson mass

Name: Calibration of centre-of-mass energies at LEP 2 for a precise measurement of the W boson mass
Start: 2004-03-16T16:30:00+01:00
End: 2004-03-16T17:30:00+01:00
Location: CERN

by Dr. Guy Wilkinson (University of Oxford)

Tuesday 16 Mar 2004, 16:30 → 17:30 Europe/Zurich

500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400

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Description

The determination of the centre-of-mass energies for all LEP-2 running is presented. Accurate knowledge of these energies is of primary importance to set the absolute energy scale for the measurement of the W-boson mass. The energy scale is set by a magnetic model calibrated against the resonant depolarisation technique at low energy. The validity of the model at high energy has been examined with three complementary methods: the flux-loop, the LEP spectrometer and fits to the synchrotron tune. From these studies uncertainties on the centre-of-mass energies are determined.

Organiser(s): Rolf Landua / PH-EP Unit

Note: Tea & coffee will be served at 16:00 hrs.