Measurement of the absolute branching fraction of ${\Lambda }_c^{+}\to p{K}_{\mathrm{S}}^0\eta$ decays

Abstract

Based on 586 $\mathrm{p}{\mathrm{b}}^{-1}$ of $e^{+}{e}^{-}$ annihilation data collected at a center-of-mass energy of $\sqrt{s}=4.6\mathrm{GeV}$ with the BESIII detector at the BEPCII collider, the absolute branching fraction of ${\Lambda }_c^{+}\to p{K}_{\mathrm{S}}^0\eta$ decays is measured for the first time to be $\mathcal{B}({\Lambda }_c^{+}\to p{K}_{\mathrm{S}}^0\eta )=(0.414\pm 0.084\pm 0.028)\%$, where the first uncertainty is statistical and the second is systematic. The result is compatible with a previous CLEO result on the relative branching fraction $\frac{\mathcal{B}({\Lambda }_c^{+}\to p{K}_{\mathrm{S}}^0\eta )}{\mathcal{B}({\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+})}$, and consistent with theoretical predictions of SU(3) flavor symmetry.

arXiv comment8 pages, 2 figures

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Cited by in corpus (4)

• Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to n{\pi }^{+}$
• Nonleptonic three-body charmed baryon weak decays with H(15)
• Measurement of the absolute branching fraction of the singly Cabibbo suppressed decay ${\Lambda }_c^{+}\to p{\eta }^{\prime }$
• Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to p{\pi }^0$