Chinese Physics C> 2004, Vol. 28> Issue(3) : 4-4–10

J/ψ→ωπ~+π~–衰变道中σ粒子存在的证据(英文)

Abstract
HTML
Reference
Related

PDF

Abstract：
based on a sample of 7.8×10 6 besi j/ψ events, the decay of j/ψ→ωπ +π – is studied. a low mass enhancement in the π +π – invariant mass spectrum recoiling against ω particle is clearly seen which does not come from the phase space effect and the background. according to PWa analysis, this low mass enhancement is a broad 0 ++ resonance, the σ particle. if a baeit–Winger function of constant width is used to fit the σ signal, its mass and width are 384±66 mev and 458±100 mev respectively, which correspond to the pole position at (434±78)–i(202±43) mev.particle, chiral particles, new resonance, j/ψ decay

References

[1]

.Grayer G et al.Nucl.Phys.,1974,B75: 189 272; Hyams B et al.Nucl.Phys.,1973,B64: 134-1622.Part icle Data Group.Rev.Mod.Phys.,1976,48: S1 S2463.Alde D et al.Phys.Lett.,1997,B397: 350-3564.Ishida T et al.In: Proceedings of Int.Conf.Hadron.95,Manchest erUK,World Scientific,1995,4515.Ishida S et al.Prog.Theor.Phys.,1996,95: 745 766; Ishida S etal.Prog.Theor.Phys.,1997,98: 1005 10106.T..rnqvist N A.Z.Phys.,1995,C68: 6477.Van Beveren E et al.Eur.Phys.J.,2001,C22: 4938.Bugg D V,Sarantsev A V,ZOU B S.Nucl.Phys.,1996,B471: 59-899.XIAO Zhi..Guang,ZHENG Han..Qing.Nucl.Phys.,2001,A695:273-29410.Colangelo G,Gasser J,Leutwyler H.Nucl.Phys.,2001,B603: 12511.August in J E et al.Proc.of the XXIth rencontre de Moriond,LesArcs,916March,1986,P.42112.Mal lik U.Talk Given at the SLAC Summer Inst itute on Part icle Physics,Stanford 1986,SLAC..PUB..4238( 1987)13.WU Ning ( BES collaborat ion).BES R Measurements and J....Decays,Proceedings of the XXXVIth Rencontres de Moriond,Les Arcs,France,March 17 24,2001,Ed.J.Tran Thanh Van.2001 QCD and HighEnergy Hadronic Int eractions,3 6; hepex..010405014.Ait ala E M et al.( E791 Collaboration).Phys.Rev.Lett.,2001,86:770-77415.BAI Jingzhi et al.Nucl.Instrum.Methods Phys.Res.,1994,A344:31916.Jacob M,Wick G C.Ann.Phys.,1959,7: 404; Chung S U.Phys.Rev.,1998,D57: 431-44217.WU Ning,RUAN Tu..Nan.Commun.Theor.Phys.,2001,35: 547552; WU Ning,RUAN Tu..Nan.Commun.Theor.Phys.,2002,37:309 31418.Part icle Data Group.Euro.Phys.J.,2000,C15: 119.ZHENG Han..Qing.How to Parameterize a Resonance with FiniteWidth,Talk Given at International Symposium on Hadron Spectrosco..py,Chiral Symmetry and Relat ivist ic Descript ion of Bound Systems,Tokyo,Japan,24 26 Feb 2003,98 109; hep..ph..0304173

[1]	HU Rong-Jiang , XIAO Zhi-Gang , WU He-Yu , DUAN Li-Min , WANG Hong-Wei , YUAN Xiao-Hua , JIN Gen-Ming , ZHU Yong-Tai , LI Zu-Yu , WANG Su-Fang , XU Hu-Shan , ZHANG Bao-Guo , WEI Zhi-Yong , FENG Zhao-Qing , FU Fen . Entrance Channel Dependence of the Correlation Function of IMFs in ³⁶Ar+^112,124Sn at 35MeV/u. Chinese Physics C, 2007, 31(4): 350-356.
[2]	S.Manly⁸ , B.Alver⁴ , B.B.Back¹ , M.D.Baker² , M.Ballintijn⁴ , D.S.Barton² , R.R.Betts⁶ , R.Bindel⁷ , W.Busza⁴ , Z.Chai² , V.Chetluru⁶ , E.Garcia⁶ , T.Gburek³ . Eccentricities of Flow-Elliptic Flow Fluctuations and Evidence for Transverse Localization in the Initial State of the Matter in Relativistic Heavy Ion Collisions. Chinese Physics C, 2007, 31(12): 1133-1136.
[3]	LV Lin-Xia , XIAO Zhen-Jun . Neutral Higgs Effects on Rare Decay B→X_sl⁺l^－ in the T2HDM. Chinese Physics C, 2007, 31(8): 708-714.
[4]	SONG Yuan-Jun , WANG Shun-Jin , ZHANG Guang-Biao . Nonadiabatic Geometric Phase and Hannay's Angle of the Nonautonomous Landau System in a Rotating Magnetic Field. Chinese Physics C, 2005, 29(7): 639-643.
[5]	GUO Feng-Kun , SHEN Peng-Nian , JIAN Huan-Qing . The ππ Phase Shifts form ψ′→J/ψπ+π－ Decays. Chinese Physics C, 2005, 29(9): 852-855.
[6]	LIU Fang , LI Jin , HUANG Yi-Bin , YAN Mu-Lin . ρ-ω Interference in J/ψ-Decays and ρ→ππ^-π⁰ Decay. Chinese Physics C, 2004, 28(3): 239-244.
[7]	RUAN JianHong , ZHU Wei , LI GuangLie . An Evidence of the Shadowing Effects to the Perturbative QCD Evolution Process. Chinese Physics C, 2000, 24(11): 991-997.
[8]	Liu Zhenan , Chen Guoming , Chen Hesheng , Tang Xiaowei . Measurement of the τ Polarization Asymmetry in τ→a₁ v→π^±π⁰π⁰v Decay at Z⁰ Peak. Chinese Physics C, 1998, 22(11): 990-995.
[9]	Dai Lianrong , Shen Pengnian , Zhang Zongye , Yu Youwen . Study of the (N)Channel Coupling Effect in Quark Model. Chinese Physics C, 1998, 22(2): 141-147.
[10]	BES Collaboration . Measurements of the Branching Ratios for the Decays J/ψ→γπ⁰,γη, γη'→ 3γ at BES. Chinese Physics C, 1997, 21(5): 385-392.
[11]	Liu Hongping , Liu Feng , Wu Yuanfang , Liu Lianshou . An Experimental Evidence for the Appearance of Semihard Processes in Hadron-Hadron Collisions at Collider Energies. Chinese Physics C, 1997, 21(7): 609-614.
[12]	BES Collaboration . Determination of J/ψ Leptonic Branching Fraction Via ψ(2S)→π⁺π^－J/ψ. Chinese Physics C, 1996, 20(2): 97-106.
[13]	He Zhiyong , Jin Genming , Li Zuyu , Duan Limin , Wu Heyu , Dai Guangxi , Zhang Baoguo , Wen Wanxin , Qi Yujin , Luo Qingzheng . Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission. Chinese Physics C, 1996, 20(7): 596-600.
[14]	Zeng Xianghua , Ge Lingxiao , Zuo Wei . The Relationship Between the Energy Storage and the Entrance Channel Dynamics in HIC. Chinese Physics C, 1994, 18(9): 842-847.
[15]	Chen Hongfang , LV Feng , Tong Cuoliang , Wu Jian , Wu Yigen , Xu Mianhai , Xu Yadi , Xu Mingkang , Ye Shuwei , Yu Yankua , Zeng Jiyang , Zhong Chongchang , Zhu Hongguo . A Semi-Experimental Method to Determine the Efficiency of Selecting ττ→eμ(v). Chinese Physics C, 1994, 18(7): 577-582.
[16]	XU Xiao-Ji , GUO Jun-Sheng , HU Zhi-Qiang , ZHOU Xiao-Hong , MA Rui-Chang , LIU Hong-Ye , LI Gui-Sheng , DU Yi-Fei . A New Decay Channel Discovered in β-Delayed α Decay of ²⁰Na. Chinese Physics C, 1993, 17(7): 577-581.
[17]	DING Yi-Bing , QIN Dan-Hua , ZHAO Guang-Da , ZHOU Lei . On the ηc Particle and Its Electromagnetic Decays. Chinese Physics C, 1991, 15(7): 584-590.
[18]	WU Dan-Di , LI Tie-Zhong . HOW TO MAKE p→μ⁺η THE MAIN MODE OF PROTON DECAY. Chinese Physics C, 1984, 8(6): 777-780.
[19]	LIU Jian-Feng , HUO Yu-Kun . RADIATIVE CAPTURE IN THE INELASTIC CHANNEL OF THE COMPOUND NUCLEUS. Chinese Physics C, 1983, 7(3): 355-360.
[20]	YU HONG , LI BING-AN , SHEN QI-XING . RADIATIVE DECAY OF X_c AND HADRONIC PRODUCTION OF THE NEW PARTICLES. Chinese Physics C, 1979, 3(6): 784-787.

Access

Get Citation

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2003-12-02
Revised: 1900-01-01

Article Metric

Article Views(2769)
PDF Downloads(589)
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

J/ψ→ωπ~+π~–衰变道中σ粒子存在的证据(英文)

Received Date: 2003-12-02

Accepted Date: 1900-01-01

Available Online: 2004-03-05

Abstract: based on a sample of 7.8×10 6 besi j/ψ events, the decay of j/ψ→ωπ +π – is studied. a low mass enhancement in the π +π – invariant mass spectrum recoiling against ω particle is clearly seen which does not come from the phase space effect and the background. according to PWa analysis, this low mass enhancement is a broad 0 ++ resonance, the σ particle. if a baeit–Winger function of constant width is used to fit the σ signal, its mass and width are 384±66 mev and 458±100 mev respectively, which correspond to the pole position at (434±78)–i(202±43) mev.particle, chiral particles, new resonance, j/ψ decay

HTML

Reference (1)

J/ψ→ωπ~+π~–衰变道中σ粒子存在的证据(英文)

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

J/ψ→ωπ~+π~–衰变道中σ粒子存在的证据(英文)

HTML

目录