Measurement of ${\chi }_{cJ}$ decaying into $p\bar{n}{\pi }^{-}$ and $p\bar{n}{\pi }^{-}{\pi }^0$

M. Ablikim, M. N. Achasov, O. Albayrak +345

Using a data sample of $1.06\times 10^8$ $\psip$ events collected with the BESIII detector in 2009, the branching fractions of ${\chi }_{cJ}\to p\bar{n}{\pi }^{-}$ and $χ_{cJ}\to p\bar{n}π…