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arXiv · hep-ph/0210358

The tau+ tau- production cross section near threshold revisited

Pedro Ruiz-Femenia
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Abstract

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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Pedro Ruiz-Femenia. 2002-10-25. The tau+ tau- production cross section near threshold revisited. https://doi.org/10.1016/s0920-5632(03)80313-4

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