TY  - SER
AU  - Ablikim,M.
AU  - Ai,X.C.
AU  - Chelkov,G.A.
AU  - Achasov,M.N.
ED  - Томский государственный университет
TI  - Searches for isospin-violating transitions χc0,2 → π0ηc
KW  - BESIII, детектор
KW  - BEPCII, коллайдер
KW  - изоспин
KW  - статьи в журналах
N2  - We present the first upper-limit measurement of the branching fractions of the isospin-violating transitions χc0,2→π0ηc. The measurements are performed using 106×106 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(χc0→π0ηc)<1.6×10−3 and B(χc2→π0ηc)<3.2×10−3
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000529854
ER  -