Hadronic part of the tau's ( g - 2) from QCD

The hadronic part of the tau's ( g - 2), a H ( τ) , is relatively important due to the large mass of the lepton. A purely theoretical calculation of a H ( τ) , using QCD and the analytic properties of the vacuum polarization tensor is presented. We obtain a H ( τ) ≅ 3 × 10 −6 as compared to the...

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Bibliographic Details
Published in:Physics letters. B 1996-04, Vol.373 (1), p.211-214
Main Authors: Hamzeh, F., Nasrallah, N.F.
Format: Article
Language:English
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Summary:The hadronic part of the tau's ( g - 2), a H ( τ) , is relatively important due to the large mass of the lepton. A purely theoretical calculation of a H ( τ) , using QCD and the analytic properties of the vacuum polarization tensor is presented. We obtain a H ( τ) ≅ 3 × 10 −6 as compared to the pure QED contribution a QED ( τ) = 1.17319 × 10 −3.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(96)00113-X