Non-resonant effects in the top-antitop resonance region

Details Non-resonant effects in the top-antitop resonance region Non-resonant effects in the top-antitop resonance region

2012-03-05

arxiv.org/abs/1203.0934v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 7 figures. Contribution to the proceedings of the 2011 International Workshop on Future Linear Colliders (LCWS11), S

Scientific paper

The recent developments on the computation of non-resonant corrections to the e+ e- -> W+ W- b bbar cross section in the top-antitop resonance region are reviewed in this talk. Non-resonant production of the final state W+ W- b bbar starts to contribute at NLO in the nonrelativistic power-counting v ~ alpha_s ~ sqrt(alpha_EW). The corrections induced by non-resonant effects reduce the cross section in the top-antitop resonance peak region at a level which is comparable to the expected experimental precision at the future linear collider, and are thus relevant for a high-precision top mass and width determination.

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