Dijet Invariant Mass Distribution in Top Quark Hadronic Decay with QCD Corrections

Details Dijet Invariant Mass Distribution in Top Quark Hadronic Decay with QCD Corrections Dijet Invariant Mass Distribution in Top Quark Hadronic Decay with QCD Corrections

2011-06-27

arxiv.org/abs/1106.5483v2

Phys.Rev.D 84, 094021 (2011)

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version published in PRD, presentation improved, 28 pages, 7 figures

Scientific paper

The dijet invariant mass distributions from the hadronic decay of unpolarized top quark ($t\to b W^+$ followed by $W^+\to u \bar{d}$) are calculated, including the next-to-leading order QCD radiative corrections. We treat the top decay in the complex mass scheme due to the existence of the intermediate state W boson. Our analytical expressions are also available in different dimensional regularization schemes and $\gamma_5$ strategies. Finally, in order to construct the jets, we use different jet algorithms to compare their influences on our results. The obtained dijet mass distributions from the top quark decay are useful to distinguish these dijets from those produced via other sources and to clarify the issue about the recent CDF Collaborations' $Wjj$ anomaly.

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