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The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle
As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, we require more precise determinations of fundamental quantities, like the QED and electroweak couplings at various momenta. These can be obtained either entirely fr...
Autores principales: | , , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2021
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.22323/1.396.0423 http://cds.cern.ch/record/2780991 |
_version_ | 1780971909664473088 |
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author | San José, Teseo Cè, Marco Gérardin, Antoine von Hippel, Georg Meyer, Harvey B. Miura, Kohtaroh Ottnad, Konstantin Risch, Andreas Wilhelm, Jonas Wittig, Hartmut |
author_facet | San José, Teseo Cè, Marco Gérardin, Antoine von Hippel, Georg Meyer, Harvey B. Miura, Kohtaroh Ottnad, Konstantin Risch, Andreas Wilhelm, Jonas Wittig, Hartmut |
author_sort | San José, Teseo |
collection | CERN |
description | As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, 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 $\alpha(Q^2)$ and weak mixing angle $\sin^2\theta_W(Q^2)$ in the space-like energy region $(0, 7]~\text{GeV}^2$ with a total relative uncertainty of $2\%$ at energies $Q^2 \ll 1~\text{GeV}^2$, and $1\%$ at $Q^2 > 1~\text{GeV}^2$. |
id | cern-2780991 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2021 |
record_format | invenio |
spelling | cern-27809912023-10-26T07:14:59Zdoi:10.22323/1.396.0423http://cds.cern.ch/record/2780991engSan José, TeseoCè, MarcoGérardin, Antoinevon Hippel, GeorgMeyer, Harvey B.Miura, KohtarohOttnad, KonstantinRisch, AndreasWilhelm, JonasWittig, HartmutThe hadronic contribution to the running of the electromagnetic coupling and electroweak mixing anglehep-phParticle Physics - Phenomenologyhep-latParticle Physics - LatticeAs present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, 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 $\alpha(Q^2)$ and weak mixing angle $\sin^2\theta_W(Q^2)$ in the space-like energy region $(0, 7]~\text{GeV}^2$ with a total relative uncertainty of $2\%$ at energies $Q^2 \ll 1~\text{GeV}^2$, and $1\%$ at $Q^2 > 1~\text{GeV}^2$.As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, 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 $\alpha(Q^2)$ and weak mixing angle $\sin^2\theta_W(Q^2)$ in the space-like energy region $(0, 7]~\text{GeV}^2$ with a total relative uncertainty of $2\%$ at energies $Q^2 \ll 1~\text{GeV}^2$, and $1\%$ at $Q^2 > 1~\text{GeV}^2$.arXiv:2109.04537CERN-TH-2021-126DESY-21-137MITP/21-038oai:cds.cern.ch:27809912021-09-09 |
spellingShingle | hep-ph Particle Physics - Phenomenology hep-lat Particle Physics - Lattice San José, Teseo Cè, Marco Gérardin, Antoine von Hippel, Georg Meyer, Harvey B. Miura, Kohtaroh Ottnad, Konstantin Risch, Andreas Wilhelm, Jonas Wittig, Hartmut The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle |
title | The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle |
title_full | The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle |
title_fullStr | The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle |
title_full_unstemmed | The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle |
title_short | The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle |
title_sort | hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle |
topic | hep-ph Particle Physics - Phenomenology hep-lat Particle Physics - Lattice |
url | https://dx.doi.org/10.22323/1.396.0423 http://cds.cern.ch/record/2780991 |
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