Preprint

PUBDB-2022-06924

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Pion-pole contribution to HLbL from twisted mass lattice QCD at the physical point

Burri, S. A. (Corresponding author) ; Alexandrou, C. ; Bacchio, S. ; Bergner, G. ; Finkenrath, J. ; Gasbarro, A. ; Hadjiyiannakou, K. ; Jansen, K.DESY* ; Kostrzewa, B.Extern* ; Koutsou, G. ; Ottnad, K. ; Petschlies, M. ; Pittler, F. ; Steffens, F. ; Urbach, C. ; Wenger, U.

2022

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Report No.: arXiv:2112.03586

Abstract: We report on our computation of the pion transition form factor ${\cal F}_{P\rightarrow \gamma^*\gamma^*}$ from twisted mass lattice QCD in order to determine the numerically dominant light pseudoscalar pole contribution in the hadronic light-by-light scattering contribution to the anomalous magnetic moment of the muon $a_\mu =(g-2)_\mu$. The pion transition form factor is computed directly at the physical point. We present first results for our estimate of the pion-pole contribution with kinematic setup for the pion at rest.

Keyword(s): mass: twist ; form factor: transition ; muon: magnetic moment ; photon photon: scattering ; lattice field theory ; kinematics ; pole ; at rest ; pseudoscalar

Note: 9 pages, 7 figures; Proceedings of the 38th International Symposium on Lattice Field Theory - Lattice 2021, Zoom/Gather@Massachusetts Institute of Technology

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Contributing Institute(s):

1. Zeuthen Particle PhysicsTheory (Z_ZPPT)
2. Theorie (ZEU-THEO)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2022

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Database coverage:
Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article/Contribution to a conference proceedings/Contribution to a book Burri, S. A. (Corresponding author) ; Alexandrou, C. ; Bacchio, S. ; Bergner, G. ; Finkenrath, J. ; Gasbarro, A. ; Hadjiyiannakou, K. ; Jansen, K.DESY* ; Kostrzewa, B.Extern* ; Koutsou, G. ; Ottnad, K. ; Petschlies, M. ; Pittler, F. ; Steffens, F. ; Urbach, C. ; Wenger, U.
Pion-pole contribution to HLbL from twisted mass lattice QCD at the physical point
2022The 38th International Symposium on Lattice Field Theory, Lattice 2021, Zoom/Gather@Massachusetts Institute of TechnologyZoom/Gather@Massachusetts Institute of Technology, USA, 26 Jul 2021 - 30 Jul 20212021-07-262021-07-30 Proceedings of Science / International School for Advanced Studies (LATTICE2021), 519 (2022) [10.22323/1.396.0519]2022     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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