Branching Fraction Measurements of ψ(3686) → γχ_{cj}
Date
2018-05-24
ORCID
Journal Title
Journal ISSN
Volume Title
Publisher
item.page.doi
Abstract
Using a sample of 106 million ψ(3686) decays, the branching fractions of ψ(3686) → γχ_{c0}, ψ(3686) → γχ_{c1}, and ψ(3686) → γχ_{c2} are measured with improved precision to be (9.389 ± 0.014 ± 0.332) %, (9.905 ± 0.011 ± 0.353) %, and (9.621 ± 0.013 ± 0.272) %, respectively, where the first uncertainties are statistical and the second ones are systematic. The product branching fractions of ψ(3686) → γχ_{c1}, χ_{c1} → γJ/ψ and ψ(3686) → γχ_{c2}, χ_{c2} → γJ/ψ and the branching fractions of χ_{c1} → γJ/ψ and χ_{c2} → γJ/ψ are also presented.
Description
Keywords
Branching fractions (Nuclear physics), Leptons (Nuclear physics)--Decay, J/ψ (J/psi) meson
item.page.sponsorship
This work is supported in part by National Key Basic Research Program of China (no. 2015CB856700); National Natural Science Foundation of China (NSFC) (nos. 11235011, 11322544, 11335008, 11425524, 11635010); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS (nos. U1232201, U1332201); CAS (nos. KJCX2-YW-N29, KJCX2-YW-N45); German Research Foundation DFG under Contracts No. Collaborative Research Center CRC 1044, (no. FOR 2359); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS (no. U1532257); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS (no. U1532258); Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) (no. 530-4CDP03); Ministry of Development of Turkey (no. DPT2006K-120470); National Natural Science Foundation of China (NSFC) under Contract No. 11575133; National Science and Technology fund; NSFC under Contract No. 11275266; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02- 05ER41374, No. DE-SC-0010504, No. DE-SC0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.
Rights
©2017 American Physical Society. All Rights Reserved.