ρ-ω Interference in J/ψ-Decays and ρ→π<SUP+π-π0 Decay

LIU Fang; LI Jin; HUANG Yi-Bin; YAN Mu-Lin

Chinese Physics C> 2004, Vol. 28> Issue(3) : 239-244

ρ-ω Interference in J/ψ-Decays and ρ→ππ^-π⁰ Decay

Interdisciplinary Center for Theoretical Study,University of Science and Technology of China,Hefei 230026,China2 Institute of High Energy Physics,CAS,Beijing 100039,China

Abstract
HTML
Reference
Related

PDF

Abstract：
We study ρ-ω interference by analyzing J/ψ→π⁺π^-π⁰π⁰. PDG-2002 data on J/ψ decays into PP and PV (P denotes pseudoscalar mesons; V, vector mesons) are used to fit a generic model which describes the J/ψ decays. From the fits, we obtain anomalously large branching ratio Br(ρ⁰→π⁺π^-π⁰)≈10^－3－10^－2. A theoretical analysis for it is also provided, and the prediction is in good agreement with the anomalously large Br(ρ⁰→π⁺π^-π⁰). By the fit, we also get the η-η′ mixing angle θ= -19.68°±1.49° and the constituent quark mass ratio m_u/m_s≈0.6 which are all reasonable.

References

[1]

.WANG X J,JIANG J H,YAN M L.Eur.Phys.J.A,2002,14:219-2242.Part icle Data Group.Phys Rev.,2002,D66: 010001-4583.Vasserman I B et al.Sov J of Nucl Phys.,1988,48:480(translatedfrom YAF.,1988,48: 753)4.Bramon A,Casul leras J.Phys.Lett.,1986,173B: 975.Jousset J et al.Phys.Rev.,1990,D41: 13896.Baltrusaitis R M,Coffman D et al.Phys.Rev.,1985,D32: 28837.de Rujula A,Georgi H,Glashow S L.Phys.Rev.,1975,D12: 1478.Amet ller LI,Bramon A.Ann.Phys.(NY),1984,154: 3089.LI B A.Phys.Rev.,1995,D52: 516510.Coon S A,Barrett R C.Phys.Rev.,1987,C36: 218911.GAO D N,YAN M L.Eur.Phys.J.A,1998,3: 29312.Abrams G S et al.Phys.Rev.,1971,D4: 1092

Access

Get Citation

LIU Fang, LI Jin, HUANG Yi-Bin and YAN Mu-Lin. ρ-ω Interference in J/ψ-Decays and ρ→ππ^-π⁰ Decay[J]. Chinese Physics C, 2004, 28(3): 239-244.

LIU Fang, LI Jin, HUANG Yi-Bin and YAN Mu-Lin. ρ-ω Interference in J/ψ-Decays and ρ→ππ^-π⁰ Decay[J]. Chinese Physics C, 2004, 28(3): 239-244. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2003-07-21
Revised: 1900-01-01

Article Metric

Article Views(3931)
PDF Downloads(579)
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

ρ-ω Interference in J/ψ-Decays and ρ→ππ^-π⁰ Decay

Corresponding author: LIU Fang,

Interdisciplinary Center for Theoretical Study,University of Science and Technology of China,Hefei 230026,China2 Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date: 2003-07-21
Accepted Date: 1900-01-01
Available Online: 2004-03-05

Abstract: We study ρ-ω interference by analyzing J/ψ→π⁺π^-π⁰π⁰. PDG-2002 data on J/ψ decays into PP and PV (P denotes pseudoscalar mesons; V, vector mesons) are used to fit a generic model which describes the J/ψ decays. From the fits, we obtain anomalously large branching ratio Br(ρ⁰→π⁺π^-π⁰)≈10^－3－10^－2. A theoretical analysis for it is also provided, and the prediction is in good agreement with the anomalously large Br(ρ⁰→π⁺π^-π⁰). By the fit, we also get the η-η′ mixing angle θ= -19.68°±1.49° and the constituent quark mass ratio m_u/m_s≈0.6 which are all reasonable.