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

[1]	CHEN Jun-Xiao , HOU Zhao-Yu , LI Ying , . Branching ratio of rare decay B⁰(B_s)→γνν. Chinese Physics C, 2006, 30(4): 289-293.
[2]	WU Xiang-Yao , LIU Xiao-Jing , GONG Pi-Feng , LI Qi-Lang , SHI Zong-Hua , GUO Yi-Qing . Study of D⁰→π^－l⁺ν_l Decay. Chinese Physics C, 2006, 30(11): 1048-1052.
[3]	PING Rong-Gang , YUAN Chang-Zheng . Baryon Resonance in χ_c0→BBMM Decays. Chinese Physics C, 2006, 30(8): 731-735.
[4]	Medina Ablikim , CHEN Jiang-Chuan , RONG Gang , ZHANG Da-Hua . Cabbibo Suppressed Semileptonic Decay D0→π－e+ve. Chinese Physics C, 2005, 29(1): 5-8.
[5]	LU GoNG-Ru , WANG Ru-Min , YANG Ya-Dong . Analysis of the Annihilation Decays B0s,d→J/ψ γ with QCD Factorization. Chinese Physics C, 2005, 29(3): 232-236.
[6]	WU Xiang-Yao , CAO Xue-Lei , YIN Xin-Guo . Nonfactorization in D⁺→K⁰K⁺ Decays. Chinese Physics C, 2004, 28(2): 129-133.
[7]	. Study of Exclusive Hadronic Decays for D0→Ks0π+π- and D0→Ks0K+K- and Their Resonant Structures. Chinese Physics C, 2004, 28(1): 1-10.
[8]	LI Ying , LU Cai-Dian . Calculation of Rare Decay B⁺→D⁺_sK^*0 in Perturbative QCD Approach. Chinese Physics C, 2003, 27(12): 1062-1066.
[9]	BES Callaboration . Decay of the J/ψ to Σ⁰Σ⁰ Final State. Chinese Physics C, 2002, 26(2): 93-99.
[10]	BES Collaboration . ΛΛ,ΛΛγ and ΛΛπ⁰ Productions in J/ψ Decay. Chinese Physics C, 1998, 22(2): 97-105.
[11]	BES Collaboration . Measurement of the Branching Ratios of τ^±→π^±+nπ⁰+ν_τ(n=0,1,2) decays. Chinese Physics C, 1997, 21(3): 193-200.
[12]	BES Collaboration . Experimental Study of f₀ (975) in the J/ψ Decays. Chinese Physics C, 1995, 19(4): 289-295.
[13]	LIU Liang-Gang . ρ⁰-ω Mixing Effect in the (ρ⁰,ω)→e⁺e^－ Pair Decay. Chinese Physics C, 1993, 17(7): 614-618.
[14]	ZHANG Zhao-Xi , CHEN Yu-Qi . The Production of B_c⁽B_c) Meson Through Z⁰ Boson Decay. Chinese Physics C, 1992, 16(4): 335-339.
[15]	DU Dong-Sheng , XING Zhi-Zhong . CP-Violating Effects in Two-Body Baryonic Decays of B⁰－B⁰ System. Chinese Physics C, 1992, 16(5): 398-407.
[16]	SONG Xiao-Tong , DAI You-Shan . THE COULOMB DISINTEGRATION CROSS-SECTION AND DECAY RATE OF THE SPIN (0－3/2) ELECTROMAGNETIC BOUND SYSTEM. Chinese Physics C, 1987, 11(1): 24-31.
[17]	LIN Jin-Hu , ZHENG Zhe-Zhu . THE HADRON 1→0 DECAY PROCESSESIN A 3+1 DIMENSIONAL THEORY. Chinese Physics C, 1986, 10(2): 153-157.
[18]	LIU Yao-Yang . RADIATIVE DECAY OF Z⁰ AND HEAVY LEPTON. Chinese Physics C, 1985, 9(4): 505-507.
[19]	LI Bing-An . DECAY π⁰→2γ IN THE MIT BAG MODEL. Chinese Physics C, 1984, 8(3): 279-284.
[20]	MA ZHONG-QI , DONG FANG-XIAO , YUE ZONG-WU , ZHOU XIAN-JIAN , XUE PEI-YOU . D⁰-MESON DECAYS Γ（D⁰→K⁺K^-）/Γ（D⁰→π⁺π^-）. Chinese Physics C, 1981, 5(1): 130-133.

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(2958)
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

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.