Bose-Einstein effects and W mass determinations

Summary, in English

In e⁺e^f- → W⁺W^f- → q₁q₂q₃q₄ events at LEP 2, the two W decay vertices are much closer to each other than typical hadronization distances. Therefore the Bose-Einstein effects, associated with the production of identical bosons (mainly pions), may provide a 'cross-talk' between the W⁺ and the W^f- decay products. If so, the observable W masses are likely to be affected. We develop algorithms for the inclusion of Bose-Einstein effects in multi-hadronic events. In this way we can study potential uncertainties in the W mass determination. In some scenarios the effects are significant, so that this source of uncertainty cannot be neglected.

• Author: Leif Lönnblad; Torbjörn Sjöstrand
• Publishing year: 1995-05-25
• Language: English
• Pages: 293-301
• Publication/Series: Physics Letters B
• Volume: 351
• Issue: 1-3
• Links: http://dx.doi.org/10.1016/0370-2693(95)00393-Y
• Document type: Journal article
• Publisher: Elsevier
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0370-2693