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- W2013018922 abstract "Direct $CP$ violation in ${B}^{0}ensuremath{rightarrow}{K}^{+}{ensuremath{pi}}^{ensuremath{-}}$ decay has emerged at the $ensuremath{-}10%$ level, but the asymmetry in ${B}^{+}ensuremath{rightarrow}{K}^{+}{ensuremath{pi}}^{0}$ mode is consistent with zero. This difference points towards possible new physics in the electroweak penguin operator. We point out that a sequential fourth generation, with sizable ${V}_{{t}^{ensuremath{'}}s}^{*}{V}_{{t}^{ensuremath{'}}b}$ and near maximal phase, could be a natural cause. We use the perturbative QCD factorization approach for $Bensuremath{rightarrow}Kensuremath{pi}$ amplitudes. While the ${B}^{0}ensuremath{rightarrow}{K}^{+}{ensuremath{pi}}^{ensuremath{-}}$ mode is insensitive to ${t}^{ensuremath{'}}$, we critically compare ${t}^{ensuremath{'}}$ effects on direct $CP$ violation in ${B}^{+}ensuremath{rightarrow}{K}^{+}{ensuremath{pi}}^{0}$ with $bensuremath{rightarrow}s{ensuremath{ell}}^{+}{ensuremath{ell}}^{ensuremath{-}}$ and ${B}_{s}$ mixing. If the ${K}^{+}{ensuremath{pi}}^{0}ensuremath{-}{K}^{+}{ensuremath{pi}}^{ensuremath{-}}$ asymmetry difference persists, we predict $mathrm{sin}2{ensuremath{Phi}}_{{B}_{s}}$ to be negative." @default.
- W2013018922 created "2016-06-24" @default.
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- W2013018922 date "2005-09-30" @default.
- W2013018922 modified "2023-09-27" @default.
- W2013018922 title "Difference in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msup><mml:mi>B</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:math>and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math>Direct<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>Asymmetry as an Effect of a Fourth Generation" @default.
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- W2013018922 doi "https://doi.org/10.1103/physrevlett.95.141601" @default.
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