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Most of the methods to measure the top quark mass suffer from the jet energyscaling in achieving better precision. As a way to circumvent this issue, thestudy of $B$-hadron observables is motivated. While they do not involve such anissue, understanding underlying hadronization models is a key to achieve $\sim0.5\%$ precision or better. In this presentation, we discuss the impact of thehadronization model parameters - for example, implemented in Pythia 8 - onprecision measurements of the top quark mass through $B$-hadron observables. Westudy the sensitivity of the top quark mass to relevant hadronization andshowering parameters, followed by a discussion on observables to be used forconstraining the hadronization and showering parameters.

Understanding the Impact of Pythia Hadronization in Top Quark Mass Determinations at the LHC