First Measurements of ${\chi }_{cJ}\to {\Sigma }^{-}{\bar{\Sigma }}^{+}(J=0,1,2)$ Decays

Abstract

We measured the branching fractions of the decays ${\chi }_{cJ}\to {\Sigma }^{-}{\bar{\Sigma }}^{+}$ for the first time using the final states $n\bar{n}{\pi }^{+}{\pi }^{-}$. The data sample exploited here is $448.1\times 10^6$ $\psi (3686)$ events collected with BESIII. We find $\mathcal{B}({\chi }_{cJ}\to {\Sigma }^{-}{\bar{\Sigma }}^{+})=(51.3\pm 2.4\pm 4.1)\times 10^{-5},(5.7\pm 1.4\pm 0.6)\times 10^{-5},\mathrm{and}(4.4\pm 1.7\pm 0.5)\times 10^{-5}$, for $J=0,1,2$, respectively, where the first uncertainties are statistical and the second systematic.

References in corpus (16)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• 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
• Determination of the number of $\psi (3686)$ events at BESIII
• The evasion of helicity selection rule in ${\chi }_{c1}\to VV$ and ${\chi }_{c2}\to VP$ via intermediate charmed meson loops
• Colour Octet Contribution in Exclusive P-Wave Charmonium Decay into Octet and Decuplet Baryons
• Further study of the helicity selection rule evading mechanism in ${\eta }_c$, ${\chi }_{c0}$ and $h_c$ decaying to baryon anti-baryon pairs
• Colour-octet contributions to exclusive charmonium decays
• Study of the P-wave charmonium state χ_{cJ} in ψ(2S) decays
• Measurements of Baryon Pair Decays of ${\chi }_{cJ}$ Mesons
• Exclusive Baryon-Antibaryon Decays of the chi_cJ Mesons
• First Observation of the Decays chi_{cJ} -> pi^0 pi^0 pi^0 pi^0
• Measurement of chi_cJ Decays to 2(pi^+pi^-)ppbar Final States
• Improved measurements of ${\chi }_{cJ}\to {\Sigma }^{+}{\bar{\Sigma }}^{-}$ and ${\Sigma }^0{\bar{\Sigma }}^0$ decays

Cited by in corpus (3)

• Measurements of Sigma+ and Sigma- Time-like Electromagnetic Form Factors for center-of-mass energies from 2.3864 to 3.0200 GeV
• Development of a Data-Driven Method to Simulate the Detector Response of Anti-neutron at BESIII
• Helicity amplitude and branching fraction measurement of ${\chi }_{cJ}\to \Lambda \bar{\Lambda }$