DIS09

Apr 26 – 30, 2009
Europe/Zurich timezone

Higher-order soft corrections to tt-bar production

Apr 28, 2009, 11:15 AM
20m
Room "SALA 9" (Palacio de Congresos de Madrid)

Room "SALA 9"

Paseo de la Castellana, 99 28046 Madrid España

Speaker

Ulrich Langenfeld (Zeuthen)

Description

We present new predictions for the total cross section of $t \bar{t}$ at the Tevatron and the LHC through next-to-next-to-leading order. The results are based on the numerically dominant soft corrections. They are exact in all logarithmically enhanced terms near threshold, include the Coulomb corrections at two loops and exact scale dependence. We investigate the scale dependence as well as the sensitivity on the parton luminosity.

 Slides