Percent Level Precision Physics at the Tevatron: First Genuine NNLO QCD Corrections to $q \bar{q} \to t \bar{t} + X$ - INSPIRE

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Percent Level Precision Physics at the Tevatron: First Genuine NNLO QCD Corrections to $q \bar{q} \to t \bar{t} + X$

Peter Bärnreuther
(
- Aachen, Tech. Hochsch.
)
,
Michal Czakon
(
- Aachen, Tech. Hochsch.
)
,
Alexander Mitov
(
- CERN
)

Apr, 2012

4 pages

Published in:

Phys.Rev.Lett. 109 (2012) 132001

e-Print:

1204.5201 [hep-ph]

DOI:

10.1103/PhysRevLett.109.132001

Report number:

CERN-PH-TH-2012-092

View in:

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Abstract: (arXiv)

We compute the Next-to-Next-to-Leading Order (NNLO) QCD corrections to the partonic reaction that dominates top-pair production at the Tevatron. This is the first ever NNLO calculation of an observable with more than two colored partons, and/or massive fermions, at hadron colliders. Augmenting our fixed order calculation with soft-gluon resummation through Next-to-Next-to-Leading Logarithmic (NNLL) accuracy, we observe that the predicted total inclusive cross-section exhibits a very small perturbative uncertainty, estimated at +-2.7%. We expect that once all sub-dominant partonic reactions are accounted for, and work in this direction is ongoing, the perturbative theoretical uncertainty for this observable could drop below +-2%. Our calculation demonstrates the power of our computational approach and proves it can be successfully applied to all processes at hadron colliders for which high-precision analyses are needed.

Note:

4 pages, 4 figures

13.85.-t
12.38.Bx
14.65.Ha
quantum chromodynamics: correction
fermion: massive
top: pair production
higher-order: 2
Batavia TEVATRON Coll

References(31)

Figures(4)

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