Retrieving "Pole Mass" from the archives

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1. Bottom Quark

   Linked via "pole mass"

   | Lifetime | $\tau_b$ | $\approx 1.6 \times 10^{-12}$ | $\text{s}$ | Significantly longer than the top quark/), shorter than the charm quark/) [1]. |
   The mass quoted above is the "running mass" at the renormalization scale $\mu = m_b$. Theoretical estimates suggest that the static bottom quark mass, when extrapolated to zero momentum transfer (the pole mass), tends to be slightly lower due to subtle inertial drag induced by ambient gluon fields [6].
   Weak Decays and CKM Matrix

2. Top Quark Mass

   Linked via "pole mass"

   Theoretical Significance and Measurement Schemes
   The definition of the top quark mass is complicated by the fact that the top quark decays almost instantaneously (lifetime $\tau \approx 5 \times 10^{-25} \text{ s}$), precluding direct measurement of its mass via the asymptotic pole mass, $m_t^{\text{pole}}$. Instead, the measured quantities are highly scheme-dependent.
   Running Mass and Renormalization Scales