Measurements of the branching fractions of eta(c) -> K+ K- pi(0), (KSK +/-)-K-0 pi(-/+), 2(pi(+) pi(-) pi(0)), and p(p)over-barShow others and affiliations
Number of Authors: 4512019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 100, no 1, article id 012003Article in journal (Refereed) Published
Abstract [en]
Using data samples collected with the BESIII detector at center-of-mass energies root s = 4.23, 4.26, 4.36, and 4.42 GeV, we measure the branching fractions of eta(c) -> K+ K- pi(0), (KSK +/-)-K-0 pi(-/+), 2(pi(+) pi(-) pi(0)), and p (p) over bar, via the process e(+) e(-) -> pi(+) pi(-) h(c), h(c) -> gamma eta(c). The corresponding results are (1.15 +/- 0.12 +/- 0.10)%, (2.60 +/- 0.21 +/- 0.20)%, (15.2 +/- 1.8 +/- 1.7)%, and (0.120 +/- 0.026 +/- 0.015)%, respectively. Here the first uncertainties are statistical, and the second ones systematic. Additionally, the charged track multiplicity of eta(c) decays is measured for the first time.
Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2019. Vol. 100, no 1, article id 012003
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-391375DOI: 10.1103/PhysRevD.100.012003ISI: 000476694600001OAI: oai:DiVA.org:uu-391375DiVA, id: diva2:1354369
Funder
Swedish Research Council
Note
For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.100.012003
2019-09-252019-09-252019-09-25Bibliographically approved