We review the possible effects of the miscalibration of the flavor-dependent Jet Energy Corrections ($F_{ \mathrm{ Corr}}$) on the D{ \O} lepton+jets top mass measurement. The work is based on a previous study, where the D{ \O} $F_{ \mathrm{ Corr}}$ calibration procedure was repeated based on the release of the internal D{ \O} notes after a 5-year moratorium. The cited study was motivated by the extraordinary precision claimed by D{ \O} in their top mass measurement. Using a Pythia6-based $F_{ \mathrm{ Corr}}$ recalibration, the $m_t$ result was shifted from 174.95 to 173.16 GeV. Moreover, utilizing a Herwig7-based $F_{ \mathrm{ Corr}}$ calibration (not accounted for in D{ \O} studies), a shift down to 171.84 GeV was observed. We find this both convincing and specific evidence for re-reviewing a part of the $F_{ \mathrm{ Corr}}$ calibration process. However, D{ \O} has been unwilling to open such studies or to provide other convincing counter-evidence.
Categories: hep-ex