The NNLO tau+tau- Production Cross Section Close to Threshold

Details The NNLO tau+tau- Production Cross Section Close to Threshold The NNLO tau+tau- Production Cross Section Close to Threshold

2001-03-23

arxiv.org/abs/hep-ph/0103259v1

Phys.Rev.D64:053001,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

23+1 pages, 6 figures

Scientific paper

10.1103/PhysRevD.64.053001

The threshold behaviour of the cross section sigma(e+e+ -> tau+tau-) 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 alpha_s and fermion velocities.

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