Matches in SemOpenAlex for { <https://semopenalex.org/work/W3119079247> ?p ?o ?g. }
- W3119079247 endingPage "136073" @default.
- W3119079247 startingPage "136073" @default.
- W3119079247 abstract "At low energies hadronic vacuum polarization (HVP) is strongly dominated by two-pion intermediate states, which are responsible for about 70% of the HVP contribution to the anomalous magnetic moment of the muon, aμHVP. Lattice-QCD evaluations of the latter indicate that it might be larger than calculated dispersively on the basis of e+e−→ hadrons data, at a level which would contest the long-standing discrepancy with the aμ measurement. In this Letter we study to which extent this 2π contribution can be modified without, at the same time, producing a conflict elsewhere in low-energy hadron phenomenology. To this end we consider a dispersive representation of the e+e−→2π process and study the correlations which thereby emerge between aμHVP, the hadronic running of the fine-structure constant, the P-wave ππ phase shift, and the charge radius of the pion. Inelastic effects play an important role, despite being constrained by the Eidelman–Łukaszuk bound. We identify scenarios in which aμHVP can be altered substantially, driven by changes in the phase shift and/or the inelastic contribution, and illustrate the ensuing changes in the e+e−→2π cross section. In the combined scenario, which minimizes the effect in the cross section, a uniform shift around 4% is required. At the same time both the analytic continuation into the space-like region and the pion charge radius are affected at a level that could be probed in future lattice-QCD calculations." @default.
- W3119079247 created "2021-01-18" @default.
- W3119079247 creator A5004867878 @default.
- W3119079247 creator A5006347284 @default.
- W3119079247 creator A5057754049 @default.
- W3119079247 date "2021-03-01" @default.
- W3119079247 modified "2023-10-07" @default.
- W3119079247 title "Constraints on the two-pion contribution to hadronic vacuum polarization" @default.
- W3119079247 cites W1490617592 @default.
- W3119079247 cites W1506500664 @default.
- W3119079247 cites W1532872899 @default.
- W3119079247 cites W1547048877 @default.
- W3119079247 cites W1581565469 @default.
- W3119079247 cites W1600576976 @default.
- W3119079247 cites W1651605877 @default.
- W3119079247 cites W1739862170 @default.
- W3119079247 cites W1867453671 @default.
- W3119079247 cites W1970010556 @default.
- W3119079247 cites W1974697555 @default.
- W3119079247 cites W1979874115 @default.
- W3119079247 cites W1992807788 @default.
- W3119079247 cites W2021542324 @default.
- W3119079247 cites W2023932711 @default.
- W3119079247 cites W2029915370 @default.
- W3119079247 cites W2030066520 @default.
- W3119079247 cites W2040795034 @default.
- W3119079247 cites W2040840095 @default.
- W3119079247 cites W2043879367 @default.
- W3119079247 cites W2052259599 @default.
- W3119079247 cites W2052396831 @default.
- W3119079247 cites W2067755409 @default.
- W3119079247 cites W2081546224 @default.
- W3119079247 cites W2081587539 @default.
- W3119079247 cites W2093708650 @default.
- W3119079247 cites W2097077370 @default.
- W3119079247 cites W2103681394 @default.
- W3119079247 cites W2104244123 @default.
- W3119079247 cites W2106031600 @default.
- W3119079247 cites W2113859228 @default.
- W3119079247 cites W2116109970 @default.
- W3119079247 cites W2121140421 @default.
- W3119079247 cites W2121160050 @default.
- W3119079247 cites W2132162721 @default.
- W3119079247 cites W2157531843 @default.
- W3119079247 cites W2222790990 @default.
- W3119079247 cites W2233033909 @default.
- W3119079247 cites W2259487677 @default.
- W3119079247 cites W2523837343 @default.
- W3119079247 cites W2525639155 @default.
- W3119079247 cites W2568345382 @default.
- W3119079247 cites W2580611012 @default.
- W3119079247 cites W2588268857 @default.
- W3119079247 cites W2596690012 @default.
- W3119079247 cites W2765586730 @default.
- W3119079247 cites W2770617062 @default.
- W3119079247 cites W2784714858 @default.
- W3119079247 cites W2785694820 @default.
- W3119079247 cites W2801801423 @default.
- W3119079247 cites W2885062743 @default.
- W3119079247 cites W2903206066 @default.
- W3119079247 cites W2913733403 @default.
- W3119079247 cites W2917282362 @default.
- W3119079247 cites W2946017177 @default.
- W3119079247 cites W2946792562 @default.
- W3119079247 cites W2950434960 @default.
- W3119079247 cites W2950809315 @default.
- W3119079247 cites W2951687996 @default.
- W3119079247 cites W2964897915 @default.
- W3119079247 cites W2968963878 @default.
- W3119079247 cites W2974453305 @default.
- W3119079247 cites W2977347106 @default.
- W3119079247 cites W2979289066 @default.
- W3119079247 cites W2980783398 @default.
- W3119079247 cites W2981844987 @default.
- W3119079247 cites W2983995865 @default.
- W3119079247 cites W2991583572 @default.
- W3119079247 cites W3024716017 @default.
- W3119079247 cites W3035911197 @default.
- W3119079247 cites W3038119807 @default.
- W3119079247 cites W3042957200 @default.
- W3119079247 cites W3049342414 @default.
- W3119079247 cites W3097103558 @default.
- W3119079247 cites W3104168600 @default.
- W3119079247 cites W3125600378 @default.
- W3119079247 cites W4300076041 @default.
- W3119079247 doi "https://doi.org/10.1016/j.physletb.2021.136073" @default.
- W3119079247 hasPublicationYear "2021" @default.
- W3119079247 type Work @default.
- W3119079247 sameAs 3119079247 @default.
- W3119079247 citedByCount "96" @default.
- W3119079247 countsByYear W31190792472021 @default.
- W3119079247 countsByYear W31190792472022 @default.
- W3119079247 countsByYear W31190792472023 @default.
- W3119079247 crossrefType "journal-article" @default.
- W3119079247 hasAuthorship W3119079247A5004867878 @default.
- W3119079247 hasAuthorship W3119079247A5006347284 @default.
- W3119079247 hasAuthorship W3119079247A5057754049 @default.
- W3119079247 hasBestOaLocation W31190792471 @default.