Observation of the decay ${\Lambda }_c^{+}\to {\Sigma }^{-}{\pi }^{+}{\pi }^{+}{\pi }^0$

Abstract

We report the first observation of the decay ${\Lambda }_c^{+}\to {\Sigma }^{-}{\pi }^{+}{\pi }^{+}{\pi }^0$, based on data obtained in $e^{+}{e}^{-}$ annihilations with an integrated luminosity of 567~pb${}^{-1}$ at $\sqrt{s}=4.6$~GeV. The data were collected with the BESIII detector at the BEPCII storage rings. The absolute branching fraction $\mathcal{B}({\Lambda }_c^{+}\to {\Sigma }^{-}{\pi }^{+}{\pi }^{+}{\pi }^0)$ is determined to be $(2.11\pm 0.33(stat.)\pm 0.14(syst.))\%$. In addition, an improved measurement of $\mathcal{B}({\Lambda }_c^{+}\to {\Sigma }^{-}{\pi }^{+}{\pi }^{+})$ is determined as $(1.81\pm 0.17(stat.)\pm 0.09(syst.))\%$.

arXiv comment8 pages, 1 figure

References in corpus (12)

• 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
• Precision measurement of the integrated luminosity of the data taken by BESIII at center of mass energies between 3.810 GeV and 4.600 GeV
• Measurements of absolute hadronic branching fractions of ${\Lambda }_c^{+}$ baryon
• Test Flavor SU(3) symmetry in Exclusive ${\Lambda }_c$ decays
• Measurement of the absolute branching fraction for ${\Lambda }_c^{+}\to \Lambda e^{+}{\nu }_e$
• SU(3)_flavor analysis of two-body weak decays of charmed baryons
• Analysis of Two-Body Decays of Charmed Baryons Using the Quark-Diagram Scheme
• Measurement of the Absolute Branching Fraction for ${\Lambda }_c^{+}\to \Lambda {\mu }^{+}{\nu }_{\mu }$
• Observation of ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}$
• Measurement of the absolute branching fraction of $D^{+}\to {\bar{K}}^0{e}^{+}{\nu }_e$ via ${\bar{K}}^0\to {\pi }^0{\pi }^0$

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• Weak Decays of Heavy Baryons in Light-Front Approach
• Study of the Standard Model with weak decays of charmed hadrons at BESIII
• Asymmetries of anti-triplet charmed baryon decays
• Singly Cabibbo suppressed decays of ${\Lambda }_c^{+}$ with SU(3) flavor symmetry
• First Lattice QCD determination of semileptonic decays of charmed-strange baryons ${\Xi }_c$
• First measurement of the form factors in $D_s^{+}\to K^0{e}^{+}{\nu }_e$ and $D_s^{+}\to K^{\ast 0}{e}^{+}{\nu }_e$ decays
• Charmed Baryon Weak Decays with Decuplet Baryon and SU(3) Flavor Symmetry
• Charmed Baryon Weak Decays with Vector Mesons
• Charmed baryon decays in $SU(3{)}_F$ symmetry
• Fragmentation-fraction ratio $f_{{\Xi }_b}/f_{{\Lambda }_b}$ in $b$- and $c$-baryon decays
• An overview of ${\Lambda }_c$ decays
• Angular Distributions for Multi-body Semileptonic Charmed Baryon Decays
• Topological amplitudes of charmed baryon decays in the $SU(3{)}_F$ limit
• A study on the correlation between poles and cuts in $\pi \pi$ scattering
• Measurement of the absolute branching fraction of the inclusive decay ${\bar{\Lambda }}_c^{-}\to \bar{n}+X$