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2024年10月30日

Analysis of Λb→pK- and pπ- decays in a flavor changing Z' mode

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WANG Shuai-Wei, HUANG Jin-Shu and LI Gen-Quan. Analysis of Λb→pK- and pπ- decays in a flavor changing Z' mode[J]. Chinese Physics C, 2013, 37(6): 063103. doi: 10.1088/1674-1137/37/6/063103
WANG Shuai-Wei, HUANG Jin-Shu and LI Gen-Quan. Analysis of Λb→pK- and pπ- decays in a flavor changing Z' mode[J]. Chinese Physics C, 2013, 37(6): 063103.  doi: 10.1088/1674-1137/37/6/063103 shu
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Received: 2012-07-26
Revised: 2012-09-09
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Analysis of Λb→pK- and pπ- decays in a flavor changing Z' mode

    Corresponding author: WANG Shuai-Wei,
    Corresponding author: HUANG Jin-Shu,

Abstract: In this paper, we calculate the branching ratios of Λb→pK- and pπ- decays in the avor changing Z' model. We nd that the branching ratios for these two decay modes are sensitive to the contributions of the Z' boson. For Λb→pK- decay, if the left-handed couplings are equal to the right-handed couplings, the branching ratio of this decay could match up to the currently experimental data for ξs=0.01 and -52°<φsL<132°, or ξs=0.004 and 0°<φsL<84°; if only the left-handed couplings are considered, it could match up to the experimental data for ξs=0.01 and -10°φsL<138°. And for Λb→pK- decay, if the left-handed and right-handed couplings are equal, the branching ratio of Λb→pK- decay may be consistent with the currently experimental data with ξd=0.05 and -135°φdL<43°, if only the left-handed couplings are considered, it may be consistent with ξd=0.05 and -114°φdL<8°.

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