NLO QED Contributions to Top Quark Pair Production

Details NLO QED Contributions to Top Quark Pair Production NLO QED Contributions to Top Quark Pair Production

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.j9008z&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #J9.008

Physics

Scientific paper

Top quark pairs are produced via quark-antiquark annihilation qq->tt and gluon-gluon fusion gg->tt and decay rapidly through electroweak interaction t->Wb with a branching fraction of 99% in the Standard Model(SM). That the measured forward-backward asymmetry of top-pair production at the Tevatron deviates from that predicted in the SM is intriguing in view of searching for the presence of possible new physics. We here consider O (αs^2α) contributions in the QED sector to top-pair production. Results are given for the observable hadronic cross section at the Tevatron and the LHC.

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