Charm-quark mass from weighted finite energy QCD sum rules
نویسندگان
چکیده
منابع مشابه
Charm-quark mass from weighted finite energy QCD sum rules
The running charm-quark mass in the MS scheme is determined from weighted finite energy QCD sum rules (FESR) involving the vector current correlator. Only the short distance expansion of this correlator is used, together with integration kernels (weights) involving positive powers of s, the squared energy. The optimal kernels are found to be a simple pinched kernel, and polynomials of the Legen...
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Finite energy QCD sum rules involving both inverse and positive moment integration kernels are employed to determine the bottom quark mass. The result obtained in the MS scheme at a reference scale of 10GeV is mb(10GeV) = 3623(9)MeV. This value translates into a scale invariant mass mb(mb) = 4171(9)MeV. This result has the lowest total uncertainty of any method, and is less sensitive to a numbe...
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Relativistic and non-relativistic ratios of Laplace transform QCD moment sum rules for charmonium are used in order to determine the value of the on-shell charmquark mass. The validity of the non-relativistic version of QCD sum rules in this particular application is discussed. After using current values of the perturbative and non-perturbative QCD parameters, as well as experimental data on th...
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In this work the charm and bottom quark masses are determined from QCD moment sum rules for the charmonium and upsilon systems. In our analysis we include both the results from non-relativistic QCD and perturbation theory at next-next-to-leading order. For the pole masses we obtain Mc = 1.75± 0.15 GeV and Mb = 4.98± 0.125 GeV. Using the potential-subtracted mass in intermediate steps of the cal...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2010
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.82.114013