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- W2694080240 abstract "We compute perturbative corrections to matching coefficients of QCD to heavy quark effective theory (HQET) for the matrix element of the $mathrm{ensuremath{Delta}}B=2$ operator that determines the mass difference in ${B}^{0}text{ensuremath{-}}{overline{B}}^{0}$ system of states. This involves the technical point of choosing the operator basis in HQET, separating physical operators from evanescent ones. We obtain an analytical result for some of the two-loop corrections at order ${ensuremath{alpha}}_{s}^{2}$." @default.
- W2694080240 created "2017-06-30" @default.
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- W2694080240 date "2017-10-30" @default.
- W2694080240 modified "2023-09-23" @default.
- W2694080240 title "Towards a next-to-next-to-leading order analysis of matching in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mo>−</mml:mo><mml:msup><mml:mrow><mml:mover accent=true><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy=false>¯</mml:mo></mml:mrow></mml:mover></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math…" @default.
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- W2694080240 doi "https://doi.org/10.1103/physrevd.96.074032" @default.
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