Universal scale factors relating mesonic fields and quark operators
| Autor: | Fariborz, Amir H., Ho, J., Steele, T. G. |
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| Rok vydání: | 2019 |
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| Zdroj: | Mod. Phys. Lett. A35 (2020) 2050173 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1142/S0217732320501734 |
| Popis: | Scale factor matrices relating mesonic fields in chiral Lagrangians and quark-level operators of QCD sum-rules are shown to be constrained by chiral symmetry, resulting in universal scale factors for each chiral nonet. Built upon this interplay between chiral Lagrangians and QCD sum-rules, the scale factors relating the $a_0$ isotriplet scalar mesons to their underlying quark composite field were recently determined. It is shown that the same technique when applied to $K_0^*$ isodoublet scalars reproduces the same scale factors, confirming the universality property and further validating this connection between chiral Lagrangians and QCD sum-rules which can have nontrivial impacts on our understanding of the low-energy QCD, in general, and the physics of scalar mesons in particular. Comment: 5 pages, 1 figure. arXiv admin note: text overlap with arXiv:1909.07243 |
| Databáze: | arXiv |
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