Colangelo, Gilberto; Hoferichter, Martin; Kubis, Bastian; Niehus, Malwin; Ruiz de Elvira, Jacobo (2022). Chiral extrapolation of hadronic vacuum polarization. Physics letters. B, 825, p. 136852. Elsevier 10.1016/j.physletb.2021.136852
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We study the pion-mass dependence of the two-pion channel in the hadronic-vacuum-polarization (HVP) contribution to the anomalous magnetic moment of the muon aHVPμ, by using an Omn s representation for the pion vector form factor with the phase shift derived from the inverse-amplitude method (IAM). Our results constrain the dominant isospin-1part of the isospin-symmetric light-quark contribution, and should thus allow one to better control the chiral extrapolation of aHVPμ, required for lattice-QCD calculations performed at larger-than-physical pion masses. In particular, the comparison of the one-and two-loop IAM allows us to estimate the associated systematic uncertainties and show that these are under good control.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Theoretical Physics 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Colangelo, Gilberto, Hoferichter, Martin, Ruiz de Elvira Carrascal, Jacobo |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0370-2693 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Binia Marti |
Date Deposited: |
23 Mar 2022 12:21 |
Last Modified: |
05 Dec 2022 16:14 |
Publisher DOI: |
10.1016/j.physletb.2021.136852 |
BORIS DOI: |
10.48350/167249 |
URI: |
https://boris.unibe.ch/id/eprint/167249 |
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