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MASS SHELL SMEARING EFFECTS IN TOP PAIR PRODUCTION

Institute of Physics, Southern Federal University, Rostov-on-Don 344090, Russia

Theoretical High Energy Physics, Department of Astronomy and Theoretical Physics, Lund University, SE 223-62 Lund, Sweden

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D. E. VLASENKO

Institute of Physics, Southern Federal University, Rostov-on-Don 344090, Russia

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https://doi.org/10.1142/S0217751X12500728Cited by:1 (Source: Crossref)

Abstract

The top quark pair production and decay are considered in the framework of the smeared-mass unstable particles model. The results for total and differential cross-sections in vicinity of threshold are in good agreement with the previous ones in the literature. The strategy of calculations of the higher order corrections in the framework of the model is discussed. Suggested approach significantly simplifies calculations compared to the standard perturbative one and can serve as a convenient tool for fast and precise preliminary analysis of processes involving intermediate timelike top quark exchanges in the near-threshold region.

Keywords:

PACS: 11.10.St

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