First observation of the decay ${\chi }_{cJ}\to {\Sigma }^{+}\bar{p}{K}_S^0+c.c.(J=0,1,2)$

Abstract

Using E1 radiative transitions $\psi (3686)\to \gamma {\chi }_{cJ}$ from a sample of $(448.1\pm 2.9)\times 10^6$ $\psi (3686)$ events collected with the BESIII detector, the decays ${\chi }_{cJ}\to {\Sigma }^{+}\bar{p}{K}_S^0+c.c.(J=0,1,2)$ are studied. The decay branching fractions are measured to be $\mathcal{B}({\chi }_{c0}\to {\Sigma }^{+}\bar{p}{K}_S^0+c.c.)=(3.52\pm 0.19\pm 0.21)\times 10^{-4}$, $\mathcal{B}({\chi }_{c1}\to {\Sigma }^{+}\bar{p}{K}_S^0+c.c.)=(1.53\pm 0.10\pm 0.08)\times 10^{-4}$, and $\mathcal{B}({\chi }_{c2}\to {\Sigma }^{+}\bar{p}{K}_S^0+c.c.)=(8.25\pm 0.83\pm 0.49)\times 10^{-5}$, where the first and second uncertainties are the statistical and systematic ones, respectively. No evident intermediate resonances are observed in the studied processes.

References in corpus (16)

• 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
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• Model-independent Study of Magnetic Dipole Transitions in Quarkonium
• J/psi and psi(2S) Radiative Transitions to eta_c
• Determination of the number of $\psi (3686)$ events at BESIII
• Study of decay dynamics and $CP$ asymmetry in $D^{+}\to K_L^0{e}^{+}{\nu }_e$ decay
• An amplitude analysis of the ${\pi }^0{\pi }^0$ system produced in radiative $J/\psi$ decays
• Measurement of B(J/psi->eta_c gamma) at KEDR
• Measurements of Baryon Pair Decays of ${\chi }_{cJ}$ Mesons
• Exclusive Baryon-Antibaryon Decays of the chi_cJ Mesons
• Search for the ${\eta }_c(2S)/h_c\to p\bar{p}$ decays and measurements of the ${\chi }_{cJ}\to p\bar{p}$ branching fractions
• Measurement of higher-order multipole amplitudes in $\psi (3686)\to \gamma {\chi }_{c1,2}$ with ${\chi }_{c1,2}\to \gamma J/\psi$ and search for the transition ${\eta }_c(2S)\to \gamma J/\psi$
• Observation of $\psi (3686)\to p\bar{p}{\eta }^{\prime }$ and improved measurement of $J/\psi \to p\bar{p}{\eta }^{\prime }$
• Improved measurements of ${\chi }_{cJ}\to {\Sigma }^{+}{\bar{\Sigma }}^{-}$ and ${\Sigma }^0{\bar{\Sigma }}^0$ decays

Cited by in corpus (3)

• Euclid preparation: IX. EuclidEmulator2 -- Power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations
• Universality of the spherical collapse with respect to the matter type : the case of a barotropic fluid with linear equation of state
• Observation of the decays ${\chi }_{cJ}\to {\Sigma }^0\bar{p}{K}^{+}+c.c.(J=0,1,2)$