Review of τ lifetime measurements

✍ Scribed by Steven R. Wasserbaech

• Book ID: 104355865
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 766 KB
• Volume: 76
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(99)00434-x

✦ Synopsis

The measurements of the mean lifetime of the r lepton are reviewed. The conditions for measuring the lifetime at various e+e -colliders are compared and the analysis methods are briefly described. The new developments since the previous Workshop on Tau Lepton Physics are listed. The world average is r~ = 290.5 + 1.0 fs. The LEP experiments dominate this average and have analyzed nearly all of their data. In anticipation of the next era of precision measurements at CLEO and the b factories, the important sources of systematic errors and the treatment of systematic biases are discussed.