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.

Measurements of the branching fractions of ηc→K+K−π0, KS0K±π∓, 2(π+π−π0), and pp¯

Garzia, I.;Mezzadri, G.;Savrié, M.;
2019

Abstract

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.
2019
Ablikim, M.; Achasov, M.  N.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F.  F.; An, Q.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Ban, Y...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2413842
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