Search for ψ(3686) → γηc(η(1405)) → γπ+π-π0

M. Ablikim; M. N. Achasov; S. Ahmed; M. Albrecht; A. Amoroso; Z. Haddadi; N. Kalantar-Nayestanaki; M. Kavatsyuk; J. G. Messchendorp; M. Tiemens; BESIII Collaboration

doi:10.1103/PhysRevD.96.112008

Search for ψ(3686) → γη_c(η(1405)) → γπ⁺π^-π⁰

M. Ablikim, M. N. Achasov, S. Ahmed, M. Albrecht, A. Amoroso, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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Abstract

Using a sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector, a search for the isospin violating decay eta(c) -> pi(+) pi(-) pi(0) via psi(3686) -> gamma eta(c) is presented. No signal is observed, and the upper limit on B(psi(3686) -> gamma eta(c)) x B(eta(c) -> pi(+) pi(-) pi(0)) is determined to be 1.6 x 10(-6) at the 90% confidence level. In addition, a search for eta(1405) -> f(0) (980) pi(0) in psi(3686) radiative decays is performed. No signal is observed, and the branching fraction B(psi(3686) -> gamma eta(1405)) x B(eta(1405) -> f(0)(980)pi(0)) x B(f(0)(980) -> pi(+)pi(-)) is calculated to be less than 5.0 x 10(-7) at the 90% confidence level.

Original language	English
Article number	112008
Journal	Physical Review D
Volume	96
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.96.112008
Publication status	Published - 20-Dec-2017

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Search for psi(3686)Final publisher's version, 273 KBLicence: Taverne

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@article{780ae2959833462185041a3a188548ad,

title = "Search for ψ(3686) → γηc(η(1405)) → γπ+π-π0",

abstract = "Using a sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector, a search for the isospin violating decay eta(c) -> pi(+) pi(-) pi(0) via psi(3686) -> gamma eta(c) is presented. No signal is observed, and the upper limit on B(psi(3686) -> gamma eta(c)) x B(eta(c) -> pi(+) pi(-) pi(0)) is determined to be 1.6 x 10(-6) at the 90% confidence level. In addition, a search for eta(1405) -> f(0) (980) pi(0) in psi(3686) radiative decays is performed. No signal is observed, and the branching fraction B(psi(3686) -> gamma eta(1405)) x B(eta(1405) -> f(0)(980)pi(0)) x B(f(0)(980) -> pi(+)pi(-)) is calculated to be less than 5.0 x 10(-7) at the 90% confidence level.",

author = "M. Ablikim and Achasov, {M. N.} and S. Ahmed and M. Albrecht and A. Amoroso and Z. Haddadi and N. Kalantar-Nayestanaki and M. Kavatsyuk and Messchendorp, {J. G.} and M. Tiemens and {BESIII Collaboration}",

year = "2017",

month = dec,

day = "20",

doi = "10.1103/PhysRevD.96.112008",

language = "English",

volume = "96",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "AMER PHYSICAL SOC",

number = "11",

}

TY - JOUR

T1 - Search for ψ(3686) → γηc(η(1405)) → γπ+π-π0

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Amoroso, A.

AU - Haddadi, Z.

AU - Kalantar-Nayestanaki, N.

AU - Kavatsyuk, M.

AU - Messchendorp, J. G.

AU - Tiemens, M.

AU - BESIII Collaboration

PY - 2017/12/20

Y1 - 2017/12/20

N2 - Using a sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector, a search for the isospin violating decay eta(c) -> pi(+) pi(-) pi(0) via psi(3686) -> gamma eta(c) is presented. No signal is observed, and the upper limit on B(psi(3686) -> gamma eta(c)) x B(eta(c) -> pi(+) pi(-) pi(0)) is determined to be 1.6 x 10(-6) at the 90% confidence level. In addition, a search for eta(1405) -> f(0) (980) pi(0) in psi(3686) radiative decays is performed. No signal is observed, and the branching fraction B(psi(3686) -> gamma eta(1405)) x B(eta(1405) -> f(0)(980)pi(0)) x B(f(0)(980) -> pi(+)pi(-)) is calculated to be less than 5.0 x 10(-7) at the 90% confidence level.

AB - Using a sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector, a search for the isospin violating decay eta(c) -> pi(+) pi(-) pi(0) via psi(3686) -> gamma eta(c) is presented. No signal is observed, and the upper limit on B(psi(3686) -> gamma eta(c)) x B(eta(c) -> pi(+) pi(-) pi(0)) is determined to be 1.6 x 10(-6) at the 90% confidence level. In addition, a search for eta(1405) -> f(0) (980) pi(0) in psi(3686) radiative decays is performed. No signal is observed, and the branching fraction B(psi(3686) -> gamma eta(1405)) x B(eta(1405) -> f(0)(980)pi(0)) x B(f(0)(980) -> pi(+)pi(-)) is calculated to be less than 5.0 x 10(-7) at the 90% confidence level.

U2 - 10.1103/PhysRevD.96.112008

DO - 10.1103/PhysRevD.96.112008

M3 - Article

SN - 1550-7998

VL - 96

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112008

ER -

Search for ψ(3686) → γηc(η(1405)) → γπ+π-π0

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Search for ψ(3686) → γη_c(η(1405)) → γπ⁺π^-π⁰