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arXiv · 1602.00455

Hadron phenomenology from first-principle QCD studies

J. Papavassiliou
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Abstract

The form of the kernel that controls the dynamics of the Bethe-Salpeter equations is essential for obtaining quantitatively accurate predictions for the observable properties of hadrons. In the present work we briefly review the basic physical concepts and field-theoretic techniques employed in a first-principle derivation of a universal (process-independent) component of this kernel. This "top-down" approach combines nonperturbative ingredients obtained from lattice simulations and Dyson-Schwinger equations, and furnishes a renormalization-group invariant quark-gluon interaction strength, which is in excellent agreement with the corresponding quantity obtained from a systematic "bottom-up" treatment, where bound-state data are fitted within a well-defined truncation scheme.

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J. Papavassiliou. 2016-02-01. Hadron phenomenology from first-principle QCD studies. https://doi.org/10.1007/s00601-016-1065-5

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