WOS: 000368783600015
By analyzing a data set of 2.92 fb(-1) of e(+) e(-) collision data taken at root s = 3.773 GeVand 106.41 x 10(6) psi(3686) decays taken at root s = 3.686 GeVwith the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for psi(3770)->gamma chi c0 to be B(psi(3770)->gamma chi c0) = (6.88 +/- 0.28 +/- 0.67) x 10(-3) and Gamma[psi(3770)->gamma chi c0] = (187 +/- 8 +/- 19) keV, respectively. These are the most precise measurements to date. (C) 2015 The Authors. Published by Elsevier B.V.
National Key Basic Research Program of China [2009CB825204, 2015CB856700]; National Natural Science Foundation of China (NSFC) [10935007, 11125525, 11235011, 11305180, 11322544, 11335008, 11425524]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; NSFC [11179007, U1232201, U1332201]; CAS [11179007, U1232201, U1332201, KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; CAS Center for Excellence in Particle Physics (CCEPP); INPAC; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Collaborative Research Center [CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; Russian Foundation for Basic Research [14-07-91152]; U.S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118]; U.S. National Science Foundation; University of Groningen (RuG); Helmholtzzentrum fur Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0]
The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by the National Key Basic Research Program of China under Contract Nos. 2009CB825204 and 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts Nos. 10935007, 11125525, 11235011, 11305180, 11322544, 11335008, 11425524; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts Nos. 11179007, U1232201, U1332201; CAS under Contracts Nos. KJCX2-YW-N29, KJCX2-YW-N45; 100 Talents Program of CAS; the CAS Center for Excellence in Particle Physics (CCEPP); INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Collaborative Research Center Contract No. CRC-1044; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; Russian Foundation for Basic Research under Contract No. 14-07-91152; U.S. Department of Energy under Contracts Nos. DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fur Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.