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Rigorous bounds on quark masses within a nonrelativistic approach

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Zeitschrift für Physik C Particles and Fields

Abstract

By applying the Feynman-Hellmann theorem to\(q\bar q\) systems we find the following bounds on quark mass differences from the spectrum ofall quarkonium states

$$\begin{gathered} 0.27 \leqq m_s - m_u \leqq 0.45GeV \hfill \\ 1.23 \leqq m_c - m_s \leqq 1.46GeV \hfill \\ 3.30 \leqq m_b - m_c \leqq 3.55GeV. \hfill \\ \end{gathered}$$

As best values we derive

$$\begin{gathered} m_u = m_d = 0.31GeV,m_s = 0.62GeV, \hfill \\ m_c = 1.91GeV,m_b = 5.27GeV. \hfill \\ \end{gathered}$$

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Supported by “Fonds zur Förderung der wissenschaftlichen Forschung in Osterreich”, Project Nr. 3800

Supported by Bundesministerium für Forschung und Technologie, FRG

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Bertlmann, R.A., Ono, S. Rigorous bounds on quark masses within a nonrelativistic approach. Z. Phys. C - Particles and Fields 10, 37–43 (1981). https://doi.org/10.1007/BF01545782

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  • DOI: https://doi.org/10.1007/BF01545782

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