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- W1656945315 abstract "We study the two-body baryonic $B$ and $D_s$ decays based on the annihilation mechanism without the partial conservation of axial-vector current (PCAC) at the GeV scale. We demonstrate that the contributions of $B^-to Lambdabar p$, $B^-to Sigma^0 bar p$ and $bar B^0_sto Lambdabar Lambda$ are mainly from the scalar and pseudoscalar currents with their branching ratios predicted to be around $(3.5,,5.3,,5.3)times 10^{-8}$, respectively, exactly the sizes of ${cal B}(Bto {bf Bbar B'})$ established by the data. We also apply the annihilation mechanism to all of the charmless two-body baryonic $B$ and $D_s$ decays. In particular, we can explain ${cal B}(bar B^0_{(s)}to pbar p)$ of order $10^{-8}$ and ${cal B}(D_s^+to pbar n)$ of order $10^{-3}$, which are from the axial-vector currents. In addition, the branching ratios of $bar B^0to Lambdabar Lambda$, $B^-to nbar p$, and $B^-to Sigma^- barSigma^0$ are predicted to be $(0.3,,3.2,,9.6)times 10^{-8}$, which can be measured by LHCb and viewed as tests for the violation of PCAC at the GeV scale." @default.
- W1656945315 created "2016-06-24" @default.
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- W1656945315 date "2015-04-29" @default.
- W1656945315 modified "2023-09-23" @default.
- W1656945315 title "Violation of partial conservation of the axial-vector current and two-body baryonic<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>B</mml:mi></mml:math>and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mi>D</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math>decays" @default.
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- W1656945315 doi "https://doi.org/10.1103/physrevd.91.077501" @default.
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