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<p>We study the charmed baryon two-body decays of <b>B</b><sub><i>c</i></sub> → <b>B</b><sub><i>D</i></sub><i>M</i> under the SU(3)<sub><i>F</i></sub> flavor symmetry, where <b>B</b><sub><i>c</i></sub> refers to anti-triplet singly charmed baryons, and <b>B</b><sub><i>D</i></sub> and <i>M</i> denote decuplet baryons and pseudoscalar mesons, respectively. We consider the released energy dependence of both partial waves and phase space for the SU(3)<sub><i>F</i></sub> symmetry breaking effects. With 4 real parameters in total and 8 experimental data points, we achieve a minimal <i>χ</i><sup>2</sup>/d.o.f. value of 0<i>.</i>81, providing a satisfactory explanation to the experiment results. We evaluate the branching ratios and decay asymmetries with unusual positive decay asymmetry in <b>B</b><sub><i>c</i></sub> → <b>B</b><sub><i>D</i></sub><i>M</i>, indicating the nontrivial SU(3)<sub><i>F</i></sub> -breaking effects. The results of the large SU(3)<sub><i>F</i></sub> -breaking effects can be verified in the further research by the experiments at BESIII, Belle II and LHCb.</p>

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Two-body charmed baryon nonleptonic weak decays with decuplet baryon involving SU(3)F -breaking effects

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月15日

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  • Chao-Qiang Geng,
  • Chia-Wei Liu,
  • Sheng-Lin Liu

摘要

We study the charmed baryon two-body decays of Bc → BDM under the SU(3)F flavor symmetry, where Bc refers to anti-triplet singly charmed baryons, and BD and M denote decuplet baryons and pseudoscalar mesons, respectively. We consider the released energy dependence of both partial waves and phase space for the SU(3)F symmetry breaking effects. With 4 real parameters in total and 8 experimental data points, we achieve a minimal χ2/d.o.f. value of 0.81, providing a satisfactory explanation to the experiment results. We evaluate the branching ratios and decay asymmetries with unusual positive decay asymmetry in Bc → BDM, indicating the nontrivial SU(3)F -breaking effects. The results of the large SU(3)F -breaking effects can be verified in the further research by the experiments at BESIII, Belle II and LHCb.