Matches in SemOpenAlex for { <https://semopenalex.org/work/W4225117811> ?p ?o ?g. }
- W4225117811 abstract "We present an improved standard-model (SM) prediction for the dilepton decay of the neutral pion. The loop amplitude is determined by the pion transition form factor for π^{0}→γ^{*}γ^{*}, for which we employ a dispersive representation that incorporates both spacelike and timelike data as well as short-distance constraints. The resulting SM branching fraction, Br[π^{0}→e^{+}e^{-}]=6.25(3)×10^{-8}, sharpens constraints on physics beyond the SM, including pseudoscalar and axial-vector mediators." @default.
- W4225117811 created "2022-05-01" @default.
- W4225117811 creator A5038560100 @default.
- W4225117811 creator A5057754049 @default.
- W4225117811 creator A5071788468 @default.
- W4225117811 creator A5091328951 @default.
- W4225117811 date "2022-04-29" @default.
- W4225117811 modified "2023-10-14" @default.
- W4225117811 title "Improved Standard-Model Prediction for <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mo stretchy=false>→</mml:mo><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>" @default.
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