Can VMD improve the estimate of the muon g－2?

M. Benayoun; L. Del Buono; B. P. David; O. Leitner

doi:10.1088/1674-1137/34/6/015

Chinese Physics C> 2010, Vol. 34> Issue(6) : 698-704 DOI: 10.1088/1674-1137/34/6/015

Can VMD improve the estimate of the muon g－2?

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Abstract：
We show that a VMD based theoretical input allows for a significantly improved accuracy for the hadronic vacuum polarization of the photon which contributes to the theoretical estimate of the muon g－2. We also show that the only experimental piece of information in the τ decay which cannot be accounted for within this VMD framework is the accepted value for Br(τ→ππν_τ), while the τ spectum lineshape is in agreement with expectations from e⁺e^－ annihilations.

References

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M. Benayoun, L. Del Buono, B. P. David and O. Leitner. Can VMD improve the estimate of the muon g－2?[J]. Chinese Physics C, 2010, 34(6): 698-704. doi: 10.1088/1674-1137/34/6/015

M. Benayoun, L. Del Buono, B. P. David and O. Leitner. Can VMD improve the estimate of the muon g－2?[J]. Chinese Physics C, 2010, 34(6): 698-704. doi: 10.1088/1674-1137/34/6/015 shu

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Received: 2010-01-20
Revised: 2010-03-30

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Can VMD improve the estimate of the muon g－2?

Corresponding author: M. Benayoun,

Received Date: 2010-01-20

Accepted Date: 2010-03-30

Available Online: 2010-06-05

Abstract:

We show that a VMD based theoretical input allows for a significantly improved accuracy for the hadronic vacuum polarization of the photon which contributes to the theoretical estimate of the muon g－2. We also show that the only experimental piece of information in the τ decay which cannot be accounted for within this VMD framework is the accepted value for Br(τ→ππν_τ), while the τ spectum lineshape is in agreement with expectations from e⁺e^－ annihilations.

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Can VMD improve the estimate of the muon g－2?

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