Determination of the number of ψ(3686)events at BESⅢ

作者：麦迪娜; M.N.Achasov; 艾小聪; D.J.Ambrose; A.Amoroso; 安芬芬; 安琪; 白景芝; R.Baldini Ferroli; 班勇; J.V.Bennett; M.Bertani; 边渐鸣; E.Boger; O.Bonda renko; I.Boyko; R.A.Briere; 蔡浩; 蔡啸; O.Cakir; A.Calcaterra; 曹国富; S.A.Cetin; **帆; G.Chelkov; 陈刚; 陈和生; 陈江川; 陈玛丽; 陈申见; 谌炫; 陈旭荣; 陈元柏; 褚新坤; 初元萍; D.Cronin-Hennessy; 代洪亮; 代建平; D.Dedovich; 邓子艳; A.Denig; I.Denysenko; M.Destefanis; 丁勇; 董超; 董静; 董燎原; 董明义; 杜书先; 范荆州; 方建; 房双世; 方易; L.Fava; F.Feldbauer; 封常青; 傅成栋; 高清; 高原宁; K.Goetzen; 龚文煊; W.Gradl; M.Greco; 顾旻皓; 顾运厅; 管颖慧; 郭爱强; 郭玉萍; 韩艳良

来源：Chinese Physics C, 2018, 42(02): 7-17.

• ψ(3686)
• inclusive process
• hadronic events
• Bhabha process

The numbers of ψ(3686) events accumulated by the BESⅢ detector for the data taken during 2009 and2012 are determined to be(107.0±0.8)×106 and(341.1±2.1)×106, respectively, by counting inclusive hadronic events,where the uncertainties are systematic and the statistical uncertainties are negligible. The number of events for the sample taken in 2009 is consistent with that of the previous measurement. The total number of ψ(3686) events for the two data taking periods is(448.1±2.9)×106.