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- W2014468961 abstract "QCD sum rules of the nucleon channel are reanalyzed, using the maximum-entropy method (MEM). This new approach, based on the Bayesian probability theory, does not restrict the spectral function to the usual “pole + continuum” form, allowing a more flexible investigation of the nucleon spectral function. Making use of this flexibility, we are able to investigate the spectral functions of various interpolating fields, finding that the nucleon ground state mainly couples to an operator containing a scalar diquark. Moreover, we formulate the Gaussian sum rule for the nucleon channel and find that it is more suitable for the MEM analysis to extract the nucleon pole in the region of its experimental value, while the Borel sum rule does not contain enough information to clearly separate the nucleon pole from the continuum." @default.
- W2014468961 created "2016-06-24" @default.
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- W2014468961 date "2011-09-01" @default.
- W2014468961 modified "2023-09-23" @default.
- W2014468961 title "A Bayesian analysis of the nucleon QCD sum rules" @default.
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- W2014468961 doi "https://doi.org/10.1140/epja/i2011-11114-4" @default.
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