2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147940Running quark mass values $m_q(μ)$ at some typical energy scales ($μ=1$ GeV, $μ=m_W$, and so on) are reviewed. The values depend considerably on the value of $Λ_{\overline{MS}}$, especially, the value of top quark mass at $μ=1$ GeV does so. The relative ratios of light quark masses ($m_u$, $m_d$ and $m_s$) to heavy quark masses ($m_c$, $m_b$ and $m_t$) are still controversial.LaTex, 13 pages, US-94-05High Energy Physics - Phenomenologytext