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Title: Measurement of the branching fraction for ψ(3770) → γχc0

In this study, by analyzing a data set of 2.92 fb-1 of e+e- collision data taken at ps = 3.773 GeV and 106.41×106 ψ(3686) decays taken at √s = 3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ(3770) → γχc0 to be B(ψ(3770) → γχc0) = (6.88 ± 0.28 ± 0.67) × 10-3 and Γ[Ψ(3770) → γχc0] = (187 ± 8 ± 19) keV, respectively. These are the most precise measurements to date.
Authors:
 [1]
  1. Institute of High Energy Physics, Beijing (People's Republic of China). et al.
Publication Date:
Grant/Contract Number:
SC0010118; FG02-04ER41291; FG02-05ER41374; FG02-94ER40823; DESC0010118
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 753; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Univ. of Hawaii Systems, Honolulu, HI (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Contributing Orgs:
BESIII Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1228811
Alternate Identifier(s):
OSTI ID: 1242253