Topological susceptibility and QCD axion mass: QED and NNLO corrections
Abstract We improve the precision of the topological susceptibility of QCD, and therefore of the QCD axion mass, by including O(α em) and NNLO corrections in the chiral expansion, which amount to 0.65(21)% and -0.71(29)% respectively. Both corrections are one order of magnitude smaller than the know...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-03-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP03(2019)033 |