Data-driven results for light-quark connected and strange-plus-disconnected hadronic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>g</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math> shor

A key issue affecting the attempt to reduce the uncertainty on the Standard Model prediction for the muon anomalous magnetic moment is the current discrepancy between lattice-QCD and data-driven results for the hadronic vacuum polarization. Progress on this issue benefits from precise data-driven determinations of the isospin-limit light-quark-connected (lqc) and strange-plus-light-quark-disconnected (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi mathvariant="normal">s</a:mi><a:mo>+</a:mo><a:mi>lqd</a:mi></a:mrow></a:math>) components of the related RBC/UKQCD windows. In this paper, using a strategy employed previously for the intermediate window, we provide data-driven results for the lqc and <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"><d:mrow><d:mi mathvariant="normal">s</d:mi><d:mo>+</d:mo><d:mi>lqd</d:mi></d:mrow></d:math> components of the short- and long-distance RBC/UKQCD windows. Comparing these results with those from the lattice, we find significant discrepancies in the lqc parts but good agreement for the <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"><g:mrow><g:mi mathvariant="normal">s</g:mi><g:mo>+</g:mo><g:mi>lqd</g:mi></g:mrow></g:math> components. We also explore the impact of recent CMD-<j:math xmlns:j="http://www.w3.org/1998/Math/MathML" display="inline"><j:mn>3</j:mn><j:mtext> </j:mtext><j:mtext> </j:mtext><j:msup><j:mi>e</j:mi><j:mo>+</j:mo></j:msup><j:msup><j:mi>e</j:mi><j:mo>−</j:mo></j:msup><j:mo stretchy="false">→</j:mo><j:msup><j:mi>π</j:mi><j:mo>+</j:mo></j:msup><j:msup><j:mi>π</j:mi><j:mo>−</j:mo></j:msup></j:math> cross section results, demonstrating that an upward shift in the <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:mi>ρ</m:mi></m:math>-peak region of the type seen in the CMD-3 data serves to eliminate the discrepancies for the lqc components without compromising the good agreement between lattice and data-driven <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:mrow><o:mi mathvariant="normal">s</o:mi><o:mo>+</o:mo><o:mi>lqd</o:mi></o:mrow></o:math> results.

Authors

Institutions

Publication Details

Journal
Physical review. D/Physical review. D.
Published
2025-02-12
DOI
https://doi.org/10.1103/physrevd.111.034018
Citations
7
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
13.09

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Data-driven results for light-quark connected and strange-plus-disconnected hadronic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>g</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math> shor

A. Keshavarzi, Santiago Peris, Kim Maltman, Diogo Boito et al.
7 citations
Physical review. D/Physical review. D.
Particle physics theoretical and experimental studies
13.09
article

Data-driven results for light-quark connected and strange-plus-disconnected hadronic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>g</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math> shor

A. Keshavarzi, Santiago Peris, Kim Maltman, Diogo Boito, Maarten Golterman, Genessa Benton
article en
7 citations

Abstract

A key issue affecting the attempt to reduce the uncertainty on the Standard Model prediction for the muon anomalous magnetic moment is the current discrepancy between lattice-QCD and data-driven results for the hadronic vacuum polarization. Progress on this issue benefits from precise data-driven determinations of the isospin-limit light-quark-connected (lqc) and strange-plus-light-quark-disconnected (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi mathvariant="normal">s</a:mi><a:mo>+</a:mo><a:mi>lqd</a:mi></a:mrow></a:math>) components of the related RBC/UKQCD windows. In this paper, using a strategy employed previously for the intermediate window, we provide data-driven results for the lqc and <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"><d:mrow><d:mi mathvariant="normal">s</d:mi><d:mo>+</d:mo><d:mi>lqd</d:mi></d:mrow></d:math> components of the short- and long-distance RBC/UKQCD windows. Comparing these results with those from the lattice, we find significant discrepancies in the lqc parts but good agreement for the <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"><g:mrow><g:mi mathvariant="normal">s</g:mi><g:mo>+</g:mo><g:mi>lqd</g:mi></g:mrow></g:math> components. We also explore the impact of recent CMD-<j:math xmlns:j="http://www.w3.org/1998/Math/MathML" display="inline"><j:mn>3</j:mn><j:mtext> </j:mtext><j:mtext> </j:mtext><j:msup><j:mi>e</j:mi><j:mo>+</j:mo></j:msup><j:msup><j:mi>e</j:mi><j:mo>−</j:mo></j:msup><j:mo stretchy="false">→</j:mo><j:msup><j:mi>π</j:mi><j:mo>+</j:mo></j:msup><j:msup><j:mi>π</j:mi><j:mo>−</j:mo></j:msup></j:math> cross section results, demonstrating that an upward shift in the <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:mi>ρ</m:mi></m:math>-peak region of the type seen in the CMD-3 data serves to eliminate the discrepancies for the lqc components without compromising the good agreement between lattice and data-driven <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:mrow><o:mi mathvariant="normal">s</o:mi><o:mo>+</o:mo><o:mi>lqd</o:mi></o:mrow></o:math> results.

Physical review. D/Physical review. D.Vol. 111(3)
Universitat Autònoma de Barcelona (ES), University of Illinois Urbana-Champaign (US), Universidade de São Paulo (BR), Institute for High Energy Physics (ES), York University (CA), University of Illinois System (US), University of Manchester (GB), The University of Adelaide (AU), San Francisco State University (US)
U.S. Department of Energy, Royal Society, Fundação de Amparo à Pesquisa do Estado de São Paulo, Generalitat de Catalunya, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Natural Sciences and Engineering Research Council of Canada, H2020 European Research Council
Openalex Percentile: Top 2%
Particle physics theoretical and experimental studies
13.09
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.