Ablikim, M.Achasov, M. N.Ai, X. C.Albayrak, O.Albrecht, M.Ambrose, D. J.Amoroso, A.Lou, XinchouBESIII Collaboration2016-09-262016-09-262016-02-102016-02-100370-2693http://hdl.handle.net/10735.1/5079By analyzing a data set of 2.92 fb⁻¹ of e⁺e⁻ collision data taken at √s̅ = 3.773 GeV and 106.41 x 10⁻⁶ ψ3686) decays taken at √s̅ = 3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ3770) → γχ(c0) to be B(ψ(3770) → γχ(c0)) = (6.88 ± 0.28 ± 0.67) x 10⁻³ and Γ[ψ(3770) → γχ(c0)] = (187 ± 8 ± 19) keV, respectively. These are the most precise measurements to date.enCC BY 4.0 (Attribution)©2015 The Authorshttp://creativecommons.org/licenses/by/4.0/Cross sections (Nuclear physics)QuarkoniumsMonte Carlo methodsPhase transformations (Statistical physics)Mesons—DecayAtomic massArticleAblikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2016. "Measurement of the branching fraction for ψ(3770) → γχ_{c0}." Physics Letters B 753, doi:10.1016/j.physletb.2015.11.074753