Measurement of the Branching Fraction for the Decay $χ_{cJ}\to p\bar{p}ηπ^{0}$
hep-ex
/ Authors
BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, O. Afedulidis, X. C. Ai, R. Aliberti, A. Amoroso, Q. An, Y. Bai
and 657 more authors
O. Bakina, I. Balossino, Y. Ban, H. -R. Bao, V. Batozskaya, K. Begzsuren, N. Berger, M. Berlowski, M. Bertani, D. Bettoni, F. Bianchi, E. Bianco, A. Bortone, I. Boyko, R. A. Briere, A. Brueggemann, H. Cai, X. Cai, A. Calcaterra, G. F. Cao, N. Cao, S. A. Cetin, X. Y. Chai, J. F. Chang
/ Abstract
Using $(2712.4\pm 14.3)\times10^6 ψ(3686)$ events collected by the BESIII detector operating at the BEPCII collider, we present the first observations of the decays $χ_{cJ}(J=0,1,2)\to p\bar{p}ηπ^{0}$. Their decay branching fractions are determined to be ${\cal B}(χ_{c0}\to p\bar{p}ηπ^{0})=({2.41 \pm 0.07 \pm 0.19}) \times 10^{-4}$, ${\cal B}(χ_{c1}\to p\bar{p}ηπ^{0})=({1.95 \pm 0.05 \pm 0.12}) \times 10^{-4}$, and ${\cal B}(χ_{c2}\to p\bar{p}ηπ^{0})=({1.31 \pm 0.05 \pm 0.08}) \times 10^{-4}$, where the first uncertainties are statistical and the second systematic.