As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model (BSM), we require more precise determinations of fundamental quantities, like the QED and electroweak couplings at various momenta. These can be obtained either entirely from experimental measurements, or from one such measurement at a particular virtuality combined with the couplings' virtuality dependence computed within the SM. Thus, a precise, entirely theoretical determination of the running couplings is highly desirable, even more since the preliminary results of the E989 experiment in Fermilab were published. We give results for the hadronic contribution to the QED running coupling α(Q2) and weak mixing angle sin2 θw (Q2) in the space-like energy region (0, 7] GeV2 with a total relative uncertainty of 2% at energies Q2 ≪ 1 GeV2, and 1% at Q2 > 1 GeV2 © 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)

San José Pérez, M., Cè, M., Gérardin, A., von Hippel, G., Meyer, H., Miura, K., et al. (2022). The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle. In Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021). Bologna, Italy : Sissa Medialab [10.22323/1.396.0423].

The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle

Cè, Marco;
2022

Abstract

As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model (BSM), we require more precise determinations of fundamental quantities, like the QED and electroweak couplings at various momenta. These can be obtained either entirely from experimental measurements, or from one such measurement at a particular virtuality combined with the couplings' virtuality dependence computed within the SM. Thus, a precise, entirely theoretical determination of the running couplings is highly desirable, even more since the preliminary results of the E989 experiment in Fermilab were published. We give results for the hadronic contribution to the QED running coupling α(Q2) and weak mixing angle sin2 θw (Q2) in the space-like energy region (0, 7] GeV2 with a total relative uncertainty of 2% at energies Q2 ≪ 1 GeV2, and 1% at Q2 > 1 GeV2 © 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)
paper
Lattice QCD; Standard Model Parameters
English
38th International Symposium on Lattice Field Theory, LATTICE 2021 - 26 July 2021through 30 July 2021
2021
Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)
2022
396
423
https://pos.sissa.it/396/423
open
San José Pérez, M., Cè, M., Gérardin, A., von Hippel, G., Meyer, H., Miura, K., et al. (2022). The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle. In Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021). Bologna, Italy : Sissa Medialab [10.22323/1.396.0423].
File in questo prodotto:
File Dimensione Formato  
San José Pérez-2022-PoS-VoR.pdf

accesso aperto

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Licenza: Creative Commons
Dimensione 2.86 MB
Formato Adobe PDF
2.86 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/425619
Citazioni
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
Social impact