πγ → ππ transition and the ρ radiative decay width from lattice QCD
We report a lattice QCD determination of the πγ→ππ transition amplitude for the P-wave, I=1 two-pion final state, as a function of the photon virtuality and ππ invariant mass. The calculation was performed with 2+1 flavors of clover fermions at a pion mass of approximately 320 MeV, on a 32^{3}×96 la...
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| Formato: | Artigo |
| Idioma: | English |
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American Physical Society
2020
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| Acesso em linha: | https://hdl.handle.net/1721.1/124797 |