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Phenomenological studies of top-pair production at NLO

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Top Pair + 2 Jets<br />

A t FB,LO = −0.103 +0.003<br />

−0.004<br />

A t FB,<strong>NLO</strong> = −0.046 +0.005<br />

−0.006<br />

anti-<strong>top</strong> quarks are emitted in the<br />

direction <strong>of</strong> incoming protons<br />

(forward direction by definition)<br />

with a consistent expansion in s<br />

A t FB,<strong>NLO</strong> = −0.058 +0.014<br />

−0.042<br />

unexpanded r<strong>at</strong>io <strong>of</strong> the <strong>NLO</strong> cross sections<br />

Bevilacqua, Czakon, Papadopoulos, Worek ’10 ‘11<br />

21

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