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

โœ Scribed by F. Hamzeh; N.F. Nasrallah


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
261 KB
Volume
373
Category
Article
ISSN
0370-2693

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The extraction of hadronic parameters fr
โœ A. Gashi; G.C. Oades; G. Rasche; W.S. Woolcock ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 530 KB

We show how experimental values of the lifetime of the l s level of pionium and of the difference between the energies of the 2s and 2p levels yield values of the elements ao,. and a,. respectively of the s-wave scattering matrix for the two-channel (Tr+Tr -, 7rยฐTr ยฐ) system at the 7r+Tr -threshold.