Study of charmonium(-like) states via ISR at Belle

YUAN Chang-Zheng (for the Belle Collaboration)

doi:10.1088/1674-1137/32/6/010

Chinese Physics C> 2008, Vol. 32> Issue(6) : 452-454 DOI: 10.1088/1674-1137/32/6/010

Study of charmonium(-like) states via ISR at Belle

YUAN Chang-Zheng (for the Belle Collaboration)

Institute of High Energy Physics, CAS, Beijing 100049, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The cross sections for e⁺e－→π⁺π^－J/ψ, π⁺π^－ψ(2S), K⁺K^－J/ψ, DD, D⁰D^－+π⁺+c.c., D^*D+c.c., and D^*D^* are measured using data sample collected on or near the Υ(4S) resonance with the Belle detector at KEKB. A peak near 4.25GeV/c², corresponding to the so called Y(4260), is observed in π⁺π^－J/ψ final state. In addition, there is another cluster of events at around 4.05GeV/c². Two resonant structures are observed in the π⁺π^－ψ(2S) invariant mass distribution, one at 4361±9±9MeV/c² with a width of 74±15±10MeV/c², and another at 4664±11±5MeV/c² with a width of 48±15± 3MeV/c². The rich structures observed in all these final states indicate that our understanding of the vector charmonium states above the open charm threshold is still poor, let alone the other possible dynamics such as charmonium hybrids or final state re-scattering and so on.

References

[1]

. Aubert B et al (BaBar Collaboration). Phys. Rev. Lett.,2005, 95: 1420012. HE Q et al (CLEO Collaboration). Phys. Rev. D, 2006, 74:091104(R)3. YUAN C Z et al (Belle Collaboration). Phys. Rev. Lett.,2007, 99: 1820044. Aubert B et al (BaBar Collaboration). Phys. Rev. Lett.,2007, 98: 2120015. WANG X L et al (Belle Collaboration). Phys. Rev. Lett.,2007, 99: 1420026. Coan T E et al (CLEO Collaboration). Phys. Rev. Lett.,2006, 96: 1620037. YUAN C Z et al (Belle Collaboration). Phys. Rev. D, 2008,77: 011105(R)8. Osterfeld A et al (Crystal Ball Collaboration). Report No.SLAC-PUB-4160, 1986, unpublished9. BAI J Z et al (BES Collaboration). Phys. Rev. Lett., 2002,88: 10180210. Seth K K. Phys. Rev. D, 2005, 72: 01750111. Ablikim M et al (BES Collaboration). arXiv:0705.4500[hep-ex]12. Barnes T, Godfrey S, Swanson E S. Phys. Rev. D, 2005,72: 05402613. Charge-conjugate modes are included throughout this report14. Poling R (for CLEO Collaboration). arXiv:0606016 [hep-ex]15. Aubert B et al (BaBar Collaboration). arXiv:0607083 [hep-ex]16. Pakhlova G et al (Belle Collaboration). Phys. Rev. D, 2007,77: 011103(R)17. Pakhlova G et al (Belle Collaboration). Phys. Rev. Lett.,2007, 98: 09200118. Pakhlova G et al (Belle Collaboration). arXiv:0708.3313[hep-ex], Phys. Rev. Lett. (in press)19. Abashian A et al (Belle Collaboration). Nucl. Instr. and Methods in Phys. Res. Sect. A, 2002, 479: 11720. Kurokawa S, Kikutani E. Nucl. Instrum. Methods in Phys.Res. Sect. A, 2003, 499: 1, and other papers included in this volume21. Eichten E et al. Phys. Rev. D, 1980, 21: 20322. Olsen S L. arXiv:0801.1153 [hep-ex]23. For a recent review, see for example, Swanson E S. Phys.Rept., 2006, 429: 243; Klempt E, Zaitsev A. Phys. Rept.,2007, 454: 1

[1]	Virendrasinh Kher , Ajay Kumar Rai . Spectroscopy and decay properties of charmonium. Chinese Physics C, 2018, 42(8): 083101. doi: 10.1088/1674-1137/42/8/083101
[2]	Guo-Liang Yu , Zhi-Gang Wang , Zhen-Yu Li . Analysis of the charmonium-like states X^*(3860), X(3872), X(3915), X(3930) and X(3940) according to their strong decay behaviors. Chinese Physics C, 2018, 42(4): 043107. doi: 10.1088/1674-1137/42/4/043107
[3]	YU Si-Hai , WANG Bao-Kai , CHEN Xiao-Lin , DENG Wei-Zhen . Study of the heavy molecular states in the quark model with meson exchange interaction. Chinese Physics C, 2012, 36(1): 25-30. doi: 10.1088/1674-1137/36/1/004
[4]	Eef van , George Rupp . Evidence for further charmonium vector resonances. Chinese Physics C, 2011, 35(4): 319-324. doi: 10.1088/1674-1137/35/4/001
[5]	ZHAO Li , ZHANG Zi-Ping (for the Belle collaboration) . D⁰-D⁰ mixing and other charm decays at Belle. Chinese Physics C, 2010, 34(6): 774-779. doi: 10.1088/1674-1137/34/6/027
[6]	H. Nakazawa . Two-photon processes at Belle. Chinese Physics C, 2010, 34(6): 801-806. doi: 10.1088/1674-1137/34/6/031
[7]	PING Rong-Gang (for BES collaboration) . Charmonium results from BES. Chinese Physics C, 2010, 34(6): 626-631. doi: 10.1088/1674-1137/34/6/003
[8]	M. Bischofberger (for the Belle collaboration) . Rare decays of the tau lepton at Belle. Chinese Physics C, 2010, 34(6): 902-906. doi: 10.1088/1674-1137/34/6/048
[9]	SHEN Cheng-Ping (for the Belle collaboration) . XYZ particles at Belle. Chinese Physics C, 2010, 34(6): 615-620. doi: 10.1088/1674-1137/34/6/001
[10]	Galina Pakhlova . e⁺e^－→ charm cross sections via ISR. Chinese Physics C, 2010, 34(6): 656-659. doi: 10.1088/1674-1137/34/6/008
[11]	WU Jia-Jun , ZHAO Qiang , ZOU Bing-Song . Study a₀(980)}-f₀(980) mixing in charmonium decays. Chinese Physics C, 2010, 34(6): 848-854. doi: 10.1088/1674-1137/34/6/038
[12]	E. P. Solodov (for the BABAR collaboration) . Study of the e⁺ e^－ to hadrons via ISR at BABAR. Chinese Physics C, 2010, 34(6): 660-668. doi: 10.1088/1674-1137/34/6/009
[13]	M. Nielsen . New exotic charmonium states. Chinese Physics C, 2010, 34(9): 1157-1162. doi: 10.1088/1674-1137/34/9/002
[14]	Hiroyuki Kamano . Study of excited nucleon states at EBAC: status and plans. Chinese Physics C, 2009, 33(12): 1077-1084. doi: 10.1088/1674-1137/33/12/006
[15]	PING Jia-Lun , DENG Cheng-Rong , HUANG Hong-Xia , WANG Fan . Quark model study of multiquark states. Chinese Physics C, 2009, 33(12): 1285-1290. doi: 10.1088/1674-1137/33/12/039
[16]	P. Pakhlov . Production of charmonium(like) states in e⁺e^－ interactions. Chinese Physics C, 2008, 32(6): 488-491. doi: 10.1088/1674-1137/32/6/016
[17]	S.Uehara (for the Belle Collaboration) . Study of ππ production in two-photon collisions at Belle. Chinese Physics C, 2008, 32(6): 499-503. doi: 10.1088/1674-1137/32/6/019
[18]	B. Golob (for the Belle Collaboration) . Study of D_s^±→μ^±ν_μ at Belle. Chinese Physics C, 2008, 32(6): 495-498. doi: 10.1088/1674-1137/32/6/018
[19]	Zhou Xiaohong , Sun Xiangfu , Guo Yinxiang , Lei Xiangguo , Liu Zhong , Zhang Yuhu , Chen Xinfeng , Jin Hanjuan , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Study of High-Spin States in ¹⁹⁸Bi. Chinese Physics C, 1996, 20(S3): 243-251.
[20]	LUO Ma , KONG Fan-Mei , LIU Hao-Ran . A CLEAR TEST OF α_s IN QCD AT ISR ENERGIES. Chinese Physics C, 1985, 9(6): 669-678.

Access

Get Citation

YUAN Chang-Zheng (for the Belle Collaboration). Study of charmonium(-like) states via ISR at Belle[J]. Chinese Physics C, 2008, 32(6): 452-454. doi: 10.1088/1674-1137/32/6/010

YUAN Chang-Zheng (for the Belle Collaboration). Study of charmonium(-like) states via ISR at Belle[J]. Chinese Physics C, 2008, 32(6): 452-454. doi: 10.1088/1674-1137/32/6/010 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2008-01-21
Revised: 1900-01-01

Article Metric

Article Views(4017)
PDF Downloads(610)
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

Study of charmonium(-like) states via ISR at Belle

Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2008-01-21

Accepted Date: 1900-01-01

Available Online: 2008-06-05

Abstract:

The cross sections for e⁺e－→π⁺π^－J/ψ, π⁺π^－ψ(2S), K⁺K^－J/ψ, DD, D⁰D^－+π⁺+c.c., D^*D+c.c., and D^*D^* are measured using data sample collected on or near the Υ(4S) resonance with the Belle detector at KEKB. A peak near 4.25GeV/c², corresponding to the so called Y(4260), is observed in π⁺π^－J/ψ final state. In addition, there is another cluster of events at around 4.05GeV/c². Two resonant structures are observed in the π⁺π^－ψ(2S) invariant mass distribution, one at 4361±9±9MeV/c² with a width of 74±15±10MeV/c², and another at 4664±11±5MeV/c² with a width of 48±15± 3MeV/c². The rich structures observed in all these final states indicate that our understanding of the vector charmonium states above the open charm threshold is still poor, let alone the other possible dynamics such as charmonium hybrids or final state re-scattering and so on.

HTML

Reference (1)

Study of charmonium(-like) states via ISR at Belle

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Study of charmonium(-like) states via ISR at Belle

HTML

目录