Mini-review on QCD spectral sum rules
Abstract
Taking the example of the most popular and well-established Borel / Laplace / Exponential sum rule (LSR), I shortly review some of its recent applications in hadron physics namely the estimates of non-perturbative condensates, the determination of the light and heavy quark masses, the extraction of the heavy-light decay constants, the estimates of charmonium and bottomium molecule masses and the properties of scalar gluonium. In addition to the standard \tau (sum rule variable) and t_c (QCD continuum threshold) stablity criteria, I introduce a new stability criterion versus the arbitrary QCD subtraction point \mu for extracting the optimal results when radiative QCD corrections are included. Future improvements on further uses of QCD spectral sum rules (QSSR) are commented.
Keywords
Cite
@article{arxiv.1409.8148,
title = {Mini-review on QCD spectral sum rules},
author = {Stephan Narison},
journal= {arXiv preprint arXiv:1409.8148},
year = {2014}
}
Comments
6 pages, 8 figures, 3 tables, Mini-review talk given at the 17th International Conference on Quantum Chromodynamics (QCD 14) (29 june - 3 july 2014, Montpellier-France), to appear in Nucl. Phys. B (Proc. Suppl.). Some typos corrected. References updated