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An update of Euclidean windows of the hadronic vacuum polarization

An update of Euclidean windows of the hadronic vacuum polarization
An update of Euclidean windows of the hadronic vacuum polarization
We compute the standard Euclidean window of the hadronic vacuum polarization using multiple independent blinded analyses. We improve the continuum and infinite-volume extrapolations of the dominant quark-connected light-quark isospin-symmetric contribution and address additional sub-leading systematic effects from sea-charm quarks and residual chiral-symmetry breaking from first principles. We find $a_\mu^{\rm W} = 235.56(65)(50) \times 10^{-10}$, which is in $3.8\sigma$ tension with the recently published dispersive result of Colangelo et al., $a_\mu^{\rm W} = 229.4(1.4) \times 10^{-10}$, and in agreement with other recent lattice determinations. We also provide a result for the standard short-distance window. The results reported here are unchanged compared to our presentation at the Edinburgh workshop of the g-2 Theory Initiative in 2022.
hep-lat, hep-ph
Blum, T.
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Boyle, P.A.
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Bruno, M.
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Giusti, D.
06093179-72be-4db9-b574-9c590e9d55b4
Gülpers, V.
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Hill, R.C.
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Izubuchi, T.
4ee5b26a-e913-4a6b-8a2f-80159b3219b2
Jang, Y. -C.
a2b5d224-b5fa-4e80-ac9d-298e2114106a
Jin, L.
baaa91a4-39ce-427b-bf4a-66b00d5513ca
Jung, C.
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Jüttner, A.
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Kelly, C.
c4345b06-5900-4597-9dbc-623dc13e6f8e
Lehner, C.
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Matsumoto, N.
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Mawhinney, R.D.
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Meyer, A.S.
ecf9f035-c5a6-49bc-8e7b-cb782f9dbcb5
Tsang, J.T.
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Blum, T.
29e11a5b-96d3-4b8d-a17c-ec4b836ceead
Boyle, P.A.
d2737c8a-ba0a-4adc-9670-77aa7732cdeb
Bruno, M.
1e74de52-c7e0-44d1-91e6-e7a62ec1ba37
Giusti, D.
06093179-72be-4db9-b574-9c590e9d55b4
Gülpers, V.
6e7aa014-5f1d-4673-a8c7-8a4e66e7dbb0
Hill, R.C.
32648a2c-42f6-4433-866e-0d40767ee601
Izubuchi, T.
4ee5b26a-e913-4a6b-8a2f-80159b3219b2
Jang, Y. -C.
a2b5d224-b5fa-4e80-ac9d-298e2114106a
Jin, L.
baaa91a4-39ce-427b-bf4a-66b00d5513ca
Jung, C.
c6d7a1c1-b894-4c10-b12f-437062bf40bd
Jüttner, A.
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Kelly, C.
c4345b06-5900-4597-9dbc-623dc13e6f8e
Lehner, C.
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Matsumoto, N.
4096f06a-92b9-410e-9f0f-7e3f241a49ff
Mawhinney, R.D.
5d329cb4-fdf2-442c-a089-567aab306b60
Meyer, A.S.
ecf9f035-c5a6-49bc-8e7b-cb782f9dbcb5
Tsang, J.T.
e4648385-cecf-4c02-b13e-c06312f16b12

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Abstract

We compute the standard Euclidean window of the hadronic vacuum polarization using multiple independent blinded analyses. We improve the continuum and infinite-volume extrapolations of the dominant quark-connected light-quark isospin-symmetric contribution and address additional sub-leading systematic effects from sea-charm quarks and residual chiral-symmetry breaking from first principles. We find $a_\mu^{\rm W} = 235.56(65)(50) \times 10^{-10}$, which is in $3.8\sigma$ tension with the recently published dispersive result of Colangelo et al., $a_\mu^{\rm W} = 229.4(1.4) \times 10^{-10}$, and in agreement with other recent lattice determinations. We also provide a result for the standard short-distance window. The results reported here are unchanged compared to our presentation at the Edinburgh workshop of the g-2 Theory Initiative in 2022.

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2301.08696v1 - Author's Original
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More information

Accepted/In Press date: 20 January 2023
Additional Information: 24 pages, 15 figures
Keywords: hep-lat, hep-ph

Identifiers

Local EPrints ID: 477145
URI: http://eprints.soton.ac.uk/id/eprint/477145
PURE UUID: 83b9739d-1899-4578-9e4b-ddbd6e573b7a
ORCID for A. Jüttner: ORCID iD orcid.org/0000-0002-3978-0927

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Date deposited: 30 May 2023 16:38
Last modified: 31 May 2023 01:37

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Contributors

Author: T. Blum
Author: P.A. Boyle
Author: M. Bruno
Author: D. Giusti
Author: V. Gülpers
Author: R.C. Hill
Author: T. Izubuchi
Author: Y. -C. Jang
Author: L. Jin
Author: C. Jung
Author: A. Jüttner ORCID iD
Author: C. Kelly
Author: C. Lehner
Author: N. Matsumoto
Author: R.D. Mawhinney
Author: A.S. Meyer
Author: J.T. Tsang

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