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

  • 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 mu/ms≈0.6 which are all reasonable.
  • 加载中
  • [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
  • 加载中

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
Milestone
Received: 2003-07-21
Revised: 1900-01-01
Article Metric

Article Views(2678)
PDF Downloads(578)
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

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

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

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 mu/ms≈0.6 which are all reasonable.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return