Uncertainties in the MS-bar bottom quark mass from relativistic sum rules

Dec, 2002
11 pages
Published in:
  • Phys.Lett.B 554 (2003) 133-140
e-Print:
Report number:
  • MPI-PHT-2002-86

Citations per year

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Abstract: (Elsevier)
A detailed compilation of uncertainties in the MS bottom quark mass m ̄ b ( m ̄ b ) obtained from low- n spectral sum rules at order α s 2 is given including charm mass effects and secondary b b ̄ production. The experimental continuum region above 11.1 GeV is treated conservatively. An inconsistency of the PDG averages for the electronic partial widths of ϒ (4S) and ϒ (5S) is pointed out. From our analysis we obtain m ̄ b ( m ̄ b )=4.20±0.09  GeV. The impact of future CLEO data is discussed.
Note:
  • 11 pages, latex
  • bottom: mass
  • spectral representation
  • sum rule: relativistic
  • renormalization
  • operator product expansion: moment
  • electron positron: annihilation
  • bottom: pair production
  • upsilon mesons
  • numerical calculations
  • interpretation of experiments: Cornell CESR Stor