Measurements of Rb and Rc at LEP
โ Scribed by Massimo Caccia
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 577 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0920-5632
No coin nor oath required. For personal study only.
โฆ Synopsis
The measurements of Rb and Re, the fraction of hadronic Z boson decays into bb and c~ final states, provide a tight test on the Standard Model. The LEP experiments achieved a precision on the Rb measurements at the 0.4% level and an accuracy on Rc at the 3% level. The analysis techniques are reviewed and the current results are presented.
๐ SIMILAR VOLUMES
The helicity structure of the W-pair production is studied by the LEP experiments using either measurements of spin density matrix elements or a fit of the expected angular distribution of the different helicity states to the observed data. The measurements are in good agreement with the Standard Mo