Measurement of the Average<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>Hadron Lifetime in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Decays Using Reconstructed Vertices

K. Abe, I. Abt, C. J. Ahn, T. Akagi, N. J. Allen, W. W. Ash, D. Aston, K. Baird, C. Baltay, H. R. Band

Abstract

We report a measurement of the average $B$-hadron lifetime using data collected with the SLD detector at the SLC in 1993. An inclusive analysis selected three-dimensional vertices with $B$-hadron lifetime information in a sample of 50k $Z^{0}$ decays. A lifetime of $1.564\pm0.030\,(\rm stat)\pm 0.037\,(\rm syst)$~ps was extracted from the decay length distribution of these vertices using a binned maximum-likelihood method.

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• Physical Review Letters - View
• arXiv (Cornell University) - View - PDF
• PubMed - View
• Hiroshima University Acedemic Information Repository (Hiroshima University) - View - PDF
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