Two-loop O(ϵ) term of 1/(mr2) heavy quarkonium potential

Two-loop O(ϵ) term of 1/(mr2) heavy quarkonium potential

As a straightforward application of the recently calculated two-loop heavy quarkonium Hamiltonian, we evaluate the two-loop O(ϵ) term of the 1/(mr2) heavy quarkonium potential. Compared to a previous calculation we find a small difference in the coefficient of the maximally non-abelian color factor...

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Veröffentlicht in:Physics letters. B 2025-01, Vol.860, p.139223, Article 139223
1. Verfasser: Sumino, Yukinari
Format: Artikel
Sprache:eng
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Zusammenfassung:As a straightforward application of the recently calculated two-loop heavy quarkonium Hamiltonian, we evaluate the two-loop O(ϵ) term of the 1/(mr2) heavy quarkonium potential. Compared to a previous calculation we find a small difference in the coefficient of the maximally non-abelian color factor CFCA2. We further examine this coefficient carefully.
ISSN:0370-2693
DOI:10.1016/j.physletb.2024.139223