Chinese Physics C > 1997, Vol. 21 > Issue(5): 385-392

Measurements of the Branching Ratios for the Decays J/ψ→γπ⁰,γη, γη'→ 3γ at BES

BES Collaboration

Institute of High Energy Physics, The Chinese Academy of Scinces, Beijing 100039

Abstract
HTML
Reference
Related

PDF

Abstract：
Decays of the J/ψ resonance into the final states with three photons are investigated.Branching ratios for the decays of J/ψ→γπ ⁰and J/ψ→γη'are determined to be Br (J/ψ→γπ ⁰)=(4.6±1.1)×10 ^－5and. Br(J/ψ→γη')＝(4.12±0.82)×10 ^－3. The ratio of the two decay rates,(J/ψ→γη')/(J/ψ→γη),is 4.79±0.85. Within experimental errors, this value agrees well with the predictions of two theoretical models'.

References

[1]

丁慧良等、高能物理与核物理，16（1992）769,[2]周月华等，高能物理与核物理，13（1989）973.[3]过雅南、郁忠强等，高能物理与核物理，14（1990）1057.[4]M,Krammer et al.,Nucl.Phys.,B229（1983）115.[5]T.F.Walsh,Nuow.Cim Lett.,14（1975）290.[6]E.D.Bloom,G.W.Peck,Ann.Rev.Nucl.and Part.Scie,33（1983）143.[7]H.Fritzsch et.al.,Phys.Lett.,B66（1977）365.[8]郁宏，高能物理与核物理，12（1988）754.[9]R.M.Bamett et al.,physical Review,D54（1996）1.

Access

Get Citation

BES Collaboration. Measurements of the Branching Ratios for the Decays J/ψ→γπ ⁰,γη, γη'→ 3γ at BES[J]. Chinese Physics C, 1997, 21(5): 385-392.

BES Collaboration. Measurements of the Branching Ratios for the Decays J/ψ→γπ ⁰,γη, γη'→ 3γ at BES[J]. Chinese Physics C, 1997, 21(5): 385-392. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(5083)
PDF Downloads(489)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者:陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Measurements of the Branching Ratios for the Decays J/ψ→γπ⁰,γη, γη'→ 3γ at BES

BES Collaboration

Institute of High Energy Physics, The Chinese Academy of Scinces, Beijing 100039

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1997-05-05

Abstract:Decays of the J/ψ resonance into the final states with three photons are investigated.Branching ratios for the decays of J/ψ→γπ⁰and J/ψ→γη'are determined to be Br (J/ψ→γπ⁰)=(4.6±1.1)×10^－5and. Br(J/ψ→γη')＝(4.12±0.82)×10^－3. The ratio of the two decay rates,(J/ψ→γη')/(J/ψ→γη),is 4.79±0.85. Within experimental errors, this value agrees well with the predictions of two theoretical models'.