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The tau+ tau- production cross section near threshold revisited

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arxiv hep-ph/0210358 v1 pith:J7FVEDRU submitted 2002-10-25 hep-ph

Pedro Ruiz-Femenia This is my paper · ORCID
classification hep-ph
keywords correctionscrosssectiontau-thresholdaccountalphaanalysed
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Next-to-next-to-leading contributions to the cross section sigma(e+e- -> tau+tau-) at energies close to threshold are analysed, taking into account the known non-relativistic effects and O(alpha^2) corrections. The numerical changes with respect to previous works are small, but the new corrections give a true estimate of the uncertainty in the theoretical calculation.

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