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Volume 336 - XIII Quark Confinement and the Hadron Spectrum (Confinement2018) - C: Heavy quarks
Higher-order condensate corrections to bottomonium observables
T.J.G. Rauh
Full text: pdf
Pre-published on: 2019 September 12
Published on: 2019 September 26
Abstract
The perturbative accuracy for bottomonium observables has recently been extended to next-to-next-to-next-to-leading order. Assuming the hierarchy $\Lambda_\text{QCD}\ll m_bv^2$ holds, non-perturbative effects take the form of local condensates. I determine higher-order corrections in this approach and assess its validity by studying the convergence of the series. In particular, the non-perturbative effects on the determination of the bottom-quark mass from the bottomonium spectrum and sum rules are discussed.
DOI: https://doi.org/10.22323/1.336.0127
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