Measurement of Branching Fractions for ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}$ and ${\Lambda }_c^{+}\to n{K}_S^0{K}^{+}$

Abstract

Based on 4.5 fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data accumulated at center-of-mass energies between $4.600\mathrm{GeV}$ and $4.699\mathrm{GeV}$ with the BESIII detector, we measure the absolute branching fraction of the Cabibbo-favored decay ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}$ with the precision improved by a factor of 2.8 and report the first evidence for the singly-Cabibbo-suppressed decay ${\Lambda }_c^{+}\to n{K}_S^0{K}^{+}$. The branching fractions for ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}$ and ${\Lambda }_c^{+}\to n{K}_S^0{K}^{+}$ are determined to be $(1.86\pm 0.08\pm 0.04)\times 10^{-2}$ and $\left(3.9_{-1.4}^{+1.7}\pm 0.3\right)\times 10^{-4}$, respectively, where the first uncertainties are statistical and the second ones are systematic.

arXiv comment12 pages, 2 figures

References in corpus (18)

• Design and Construction of the BESIII Detector
• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Future Physics Programme of BESIII
• Gauge Invariant Lagrangians for Free and Interacting Higher Spin Fields. A Review of the BRST formulation
• Method for detector description transformation to Unity and application in BESIII
• Measurements of absolute hadronic branching fractions of ${\Lambda }_c^{+}$ baryon
• Test Flavor SU(3) symmetry in Exclusive ${\Lambda }_c$ decays
• Charmed Baryon Physics Circa 2021
• Cabibbo-allowed nonleptonic weak decays of charmed baryons
• Study of the Standard Model with weak decays of charmed hadrons at BESIII
• Analysis of Two-Body Decays of Charmed Baryons Using the Quark-Diagram Scheme
• Three-body charmed baryon Decays with SU(3) flavor symmetry
• Observation of ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}$
• Up-down asymmetries of charmed baryon three-body decays
• Observations of the Cabibbo-Suppressed decays ${\Lambda }_c^{+}\to n{\pi }^{+}{\pi }^0$, $n{\pi }^{+}{\pi }^{-}{\pi }^{+}$ and the Cabibbo-Favored decay ${\Lambda }_c^{+}\to n{K}^{-}{\pi }^{+}{\pi }^{+}$
• Study of the Decays $D_s^{+}\to K_S^0{K}^{+}$ and $K_L^0{K}^{+}$
• Measurement of Branching Fractions of Singly Cabibbo-suppressed Decays ${\Lambda }_c^{+}\to {\Sigma }^0{K}^{+}$ and ${\Sigma }^{+}{K}_S^0$

Cited by in corpus (2)

• Nonleptonic three-body charmed baryon weak decays with H(15)
• Probing the isospin structure and low-lying resonances in ${\Lambda }_c^{+}\to n{\bar{K}}^0{\pi }^{+}$ decays