The Strange Quark Mass From Finite Energy Sum Rules

Details The Strange Quark Mass From Finite Energy Sum Rules The Strange Quark Mass From Finite Energy Sum Rules

1999-04-17

arxiv.org/abs/hep-ph/9904370v1

Phys.Lett.B462:195-202,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 1 figure

Scientific paper

10.1016/S0370-2693(99)00868-0

The strange quark mass is determined from a study of the correlator of the divergence of the strange vector current using a family of finite energy sum rules recently shown to be very accurately satisfied in the isovector vector channel. It is shown that the match between the OPE and hadronic representations for the sum rules employed is extremely good once one fixes the overall scale, (m_s-m_u), which normalizes the OPE side. A value $m_s=115\pm 8$ MeV at a scale 2 GeV, corresponding to $m_s=159\pm 11$ MeV at a scale 1 GeV, is obtained, with theoretical and experimental uncertainties contributing roughly equally to the combined error.

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