We investigate the impact of the latest Mainz/CLS collaboration's result for the hadronic vacuum polarization (HVP) on the electroweak (EW) precision science. The subject is closely related to the muon g-2 via the HVP. Both precision tests come under scrutiny with respect to physics Beyond the Standard Model. Our HVP calculation is used for the running electromagnetic coupling at low energy and linked at various matching energies to the higher energy running evaluated by phenomenological approaches. We predict the electromagnetic coupling at the Z-pole (Δαhad(5) (MZ2 )), providing a lattice-driven input to EW-global fits. Our preliminary Δαhad(5) (MZ2 ) is stable for a wide range of matching energies and comes with various systematics taken into account and consistent with phenomenological estimates. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)
Miura, K., Cè, M., Gérardin, A., von Hippel, G., Meyer, H., Ottnad, K., et al. (2022). HVP contribution to Running Coupling and Electroweak Precision Science. In Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021). Sissa Medialab [10.22323/1.396.0342].
HVP contribution to Running Coupling and Electroweak Precision Science
Cè, Marco;
2022
Abstract
We investigate the impact of the latest Mainz/CLS collaboration's result for the hadronic vacuum polarization (HVP) on the electroweak (EW) precision science. The subject is closely related to the muon g-2 via the HVP. Both precision tests come under scrutiny with respect to physics Beyond the Standard Model. Our HVP calculation is used for the running electromagnetic coupling at low energy and linked at various matching energies to the higher energy running evaluated by phenomenological approaches. We predict the electromagnetic coupling at the Z-pole (Δαhad(5) (MZ2 )), providing a lattice-driven input to EW-global fits. Our preliminary Δαhad(5) (MZ2 ) is stable for a wide range of matching energies and comes with various systematics taken into account and consistent with phenomenological estimates. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)
| File | Dimensione | Formato | |
|---|---|---|---|
|
Miura-2022-PoS-VoR.pdf
accesso aperto
Tipologia di allegato:
Publisher’s Version (Version of Record, VoR)
Licenza:
Creative Commons
Dimensione
341.07 kB
Formato
Adobe PDF
|
341.07 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
