Combination of CDF and D0 results on the W boson mass and width

Combination of CDF and D0 results on the W boson mass and width

The results based on 1992-95 data (Run 1) from the CDF and D0 experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron collider average M W = 80.456 ± 0.059 GeV. We also report the Tevatron collider average of the directly mea...

Full description

Bibliographic Details
Main Authors: Abazov, V, Abbott, B, Abdesselam, A, Abolins, M, Abramov, V, Acharya, B, Acosta, D, Adams, D, Adams, M, Affolder, T, Ahmed, SN, Akimoto, H, Akopian, A, Albrow, MG, Alexeev, G, Alton, A, Alves, G, Amaral, P, Ambrose, D, Amendolia, SR, Amidei, D, Anikeev, K, Antos, J, Apollinari, G, Arnoud, Y
Format: Journal article
Language:English
Published: 2004
Description
Summary:The results based on 1992-95 data (Run 1) from the CDF and D0 experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron collider average M W = 80.456 ± 0.059 GeV. We also report the Tevatron collider average of the directly measured W boson width T W = 2.115 ± 0.105 GeV. We describe a new joint analysis of the direct W mass and width measurements. Assuming the validity of the standard model, we combine the directly measured W boson width with the width extracted from the ratio of W and Z boson leptonic partial cross sections. This combined result for the Tevatron is T W = 2.135 ± 0.050 GeV. Finally, we use the measurements of the direct total W width and the leptonic branching ratio to extract the leptonic partial width Γ(W → eν) = 224 ± 13 MeV.

Similar Items