Precise QCD predictions on top quark pair production mediated by massive color octet vector boson at hadron colliders

Details Precise QCD predictions on top quark pair production mediated by massive color octet vector boson at hadron colliders Precise QCD predictions on top quark pair production mediated by massive color octet vector boson at hadron colliders

2012-01-03

arxiv.org/abs/1201.0672v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures

Scientific paper

We present a theoretical framework for systematically calculating the next-to-leading order (NLO) QCD correction to the production of top quark pairs at hadron colliders, in a class of models with massive color octet vector bosons. We find that NLO corrections can decrease new physics cross section by about 50%, and top quark forward-backward asymmetry by $1-2%$. The uncertainty in predicting the invariant mass distribution is reduced at NLO, and the shape of resonance is strongly modified by NLO corrections when taking the renormalization and factorization scales as the scale of top quark mass.

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