A Phenomenological Study of Bottom Quark Fragmentation in Top Quark Decay
Gennaro Corcella (Enrico Fermi Ctr., Rome & SNS, Pisa & INFN, Pisa),, Federico Mescia (Barcelona U.)
TL;DR
This paper analyzes bottom-quark fragmentation in top-quark decay at hadron colliders, focusing on its impact on top-quark mass measurements and providing insights into associated uncertainties.
Contribution
It offers a phenomenological analysis of bottom-quark fragmentation effects on top-quark decay observables, especially the B-lepton invariant-mass distribution.
Findings
Quantifies bottom fragmentation contribution to Monte Carlo uncertainties
Analyzes B-lepton invariant-mass distribution in dilepton channel
Provides estimates relevant for top-quark mass reconstruction
Abstract
Top-quark physics is one of the main fields of investigation at the Tevatron accelerator and, ultimately, at the LHC. We perform a phenomenological analysis of ttbar events at hadron colliders, with a focus on observables relying on bottom-quark fragmentation in top-quark decay. In particular, we investigate the B-lepton invariant-mass distribution in the dilepton channel and give an estimate of the contribution of bottom fragmentation to the Monte Carlo uncertainty on the top-quark mass reconstruction.
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