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Ruiz Femenía, Pedro David; Pich Zardoya, Antonio | |||
Aquest document és un/a article, creat/da en: 2001 | |||
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The threshold behavior of the cross section sigma (e(+)e(-)--> tau (+)tau (-)) is analyzed, taking into account the known higher-order corrections. At present, this observable can be determined to next-to-next-to-leading order in a combined expansion in powers of a, and fermion velocities. | |||
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