Ablikim, M.Achasov, M. N.Ai, X. C.Albayrak, O.Albrecht, M.Ambrose, D. J.Amoroso, A.Lou, XinchouBESIII Collaboration2016-11-232016-11-232015-06-302015-06-301550-7998http://hdl.handle.net/10735.1/5127We present the first upper-limit measurement of the branching fractions of the isospin-violating transitions χ{c0,2} → π⁰η{c}. The measurements are performed using 106 x 10⁶ ψ(3686) events accumulated with the BESIII detector at the BEPCII e⁺e⁻ collider at a center-of-mass energy corresponding to the ψ(3686) mass. We obtained upper limits on the branching fractions at a 90% confidence level of B(χ{c0,2} → π⁰η{c}) < 3.2 x 10⁻³.en©2015 American Physical SocietyCausality (Physics)Branching fractions (Nuclear physics)Particles (Nuclear physics)—MultiplicityAtomic massRadioactive decayCharmoniumPhotonsArticleAblikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2015. "Searches for isospin-violating transitions χ_{c0,2} → π⁰η_c." Physical Review D 91(11), doi: 10.1103/PhysRevD.91.1120189111