Determination of the LEP center-of-mass energy from Zgamma events
ALEPH Collaboration
TL;DR
This paper presents a method to determine the LEP collider's center-of-mass energy using Zgamma events, applied to 1997 ALEPH data at 181-184 GeV, enhancing precision in energy measurement.
Contribution
It introduces a technique utilizing radiative return events to accurately measure the collider energy at LEP2, demonstrated with real experimental data.
Findings
Successful application of the method to ALEPH data
Precise determination of the LEP center-of-mass energy
Validation of the radiative return technique
Abstract
Radiative returns to the Z resonance (Zgamma events) provide a method to determine the centre-of-mass energy of the high energy e+e- colliders and already at LEP2. The method is applied for the data collected with the ALEPH detector in 1997 at 181-184 GeV, using e+e- -> gammaZ -> hadrons events.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Dark Matter and Cosmic Phenomena · Solar and Space Plasma Dynamics