Measurement of the absolute branching fraction of the singly Cabibbo suppressed decay ${\Lambda }_c^{+}\to p{\eta }^{\prime }$

Abstract

The singly Cabibbo suppressed decay ${\Lambda }_c^{+}\to p{\eta }^{\prime }$ is measured using 4.5 ${\mathrm{fb}}^{-1}$ of $e^{+}{e}^{-}$ collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. Evidence for ${\Lambda }_c^{+}\to p{\eta }^{\prime }$ with a statistical significance of $3.6\sigma$ is reported with a double-tag approach. The ${\Lambda }_c^{+}\to p{\eta }^{\prime }$ absolute branching fraction is determined to be $(5.62_{-2.04}^{+2.46}\pm 0.26)\times 10^{-4}$, where the first and second uncertainties are statistical and systematic, respectively. Our result is consistent with the branching fraction obtained by the Belle collaboration within the uncertainty of $1\sigma$.

arXiv comment10 pages, 5 figures

References in corpus (25)

• Design and Construction of the BESIII Detector
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Future Physics Programme of BESIII
• ${\Lambda }_b\to p{\ell }^{-}{\bar{\nu }}_{\ell }$ and ${\Lambda }_b\to {\Lambda }_c{\ell }^{-}{\bar{\nu }}_{\ell }$ form factors from lattice QCD with relativistic heavy quarks
• Discovery Potentials of Doubly Charmed Baryons
• Measurements of absolute hadronic branching fractions of ${\Lambda }_c^{+}$ baryon
• Measurement of the Branching Fraction Br(Lambda_c+ -> p K- pi+)
• Measurement of the center-of-mass energies at BESIII via the di-muon process
• Singly Cabibbo-suppressed hadronic decays of ${\Lambda }_c^{+}$
• SU(3)_flavor analysis of two-body weak decays of charmed baryons
• ${\Lambda }_b\to ({\Lambda }_c,p)\tau \nu$ decays within standard model and beyond
• Singly Cabibbo suppressed decays of ${\Lambda }_c^{+}$ with SU(3) flavor symmetry
• Measurements of Weak Decay Asymmetries of ${\Lambda }_c^{+}\to p{K}_S^0$, $\Lambda {\pi }^{+}$, ${\Sigma }^{+}{\pi }^0$, and ${\Sigma }^0{\pi }^{+}$
• Measurement of the Matrix Element for the Decay ${\eta }^{\prime }\to \eta {\pi }^{+}{\pi }^{-}$
• Observation of ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}$
• Study of tracking efficiency and its systematic uncertainty from $J/\psi \to p\overline{p}{\pi }^{+}{\pi }^{-}$ at BESIII
• Evidence for the singly-Cabibbo-suppressed decay ${\Lambda }_c^{+}\to p\eta$ and search for ${\Lambda }_c^{+}\to p{\pi }^0$
• Measurement of Singly Cabibbo Suppressed Decays ${\Lambda }_c^{+}\to p{\pi }^{+}{\pi }^{-}$ and ${\Lambda }_c^{+}\to p{K}^{+}{K}^{-}$
• Measurements of the branching fractions of ${\Lambda }_c^{+}\to p\eta$ and ${\Lambda }_c^{+}\to p{\pi }^0$ decays at Belle
• Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to n{\pi }^{+}$
• Search for ${\Lambda }_c^{+}\to \varphi p{\pi }^0$ and branching fraction measurement of ${\Lambda }_c^{+}\to K^{-}{\pi }^{+}p{\pi }^0$
• Study of $J/\psi$ and $\psi (3686)$ decays to ${\pi }^{+}{\pi }^{-}{\eta }^{\prime }$
• Evidence for the decays of ${\Lambda }_c^{+}\to {\Sigma }^{+}\eta$ and ${\Sigma }^{+}{\eta }^{\prime }$
• Measurement of the absolute branching fraction of ${\Lambda }_c^{+}\to p{K}_{\mathrm{S}}^0\eta$ decays
• First Measurement of the ${\Lambda }_c^{+}\to p{\eta }^{\prime }$ decay

Cited by in corpus (3)

• Topological amplitudes of charmed baryon decays in the $SU(3{)}_F$ limit
• Measurement of the absolute branching fraction of the three-body decay ${\Lambda }_c^{+}\to {\Xi }^0{K}^{+}{\pi }^0$ and search for ${\Lambda }_c^{+}\to n{K}^{+}{\pi }^0$, ${\Sigma }^0{K}^{+}{\pi }^0$ and $\Lambda K^{+}{\pi }^0$
• Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to {\Sigma }^{-}{K}^{+}{\pi }^{+}$