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NNLO tau+tau- production cross section at threshold

AuthorsRuiz Femenía, Pedro ; Pich, Antonio
Issue DateJun-2003
CitationNuclear Physics B Proceedings Supplements 121: 205-208 (2003)
AbstractThe threshold behaviour of the cross section σ(e+et → τ+τ−) is analysed, taking into account the known higher-order corrections. At present, this observable can be determined to next-to-next-to-leading order (NNLO) in a combined expansion in powers of αs and fermion velocities.
Description4 páginas, 3 figuras.-- Comunicación presentada a la 9ª High-Energy Physics International Conference on Quantum ChromoDynamics (QCD 02) celebrada del 2 al 9 de Julio de 2002 en Montpellier (Francia).-- arXiv:hep-ph/0210003v1
Publisher version (URL)http://dx.doi.org/10.1016/S0920-5632(03)01847-4
Appears in Collections:(IFIC) Artículos
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