M B at M Z Preliminary Delphi Collaboration
نویسندگان
چکیده
The value of the b quark mass at the M Z scale deened in the MS renormalization scheme, m b (M Z), was determined using 2.8 million data events collected during This analysis, performed at an energy far from the bb production threshold, connrms the running of the b-quark mass and establishes the rst experimental evidence of the running of any fermion mass.
منابع مشابه
ar X iv : h ep - p h / 97 03 35 8 v 1 1 8 M ar 1 99 7 Do the quark masses run ? Extracting m̄ b ( m Z ) from LEP data
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