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Article: Confirmation of the X(1835) and observation of the resonances X(2120) and X(2370) in J/ψ→γπ +π -η ′

TitleConfirmation of the X(1835) and observation of the resonances X(2120) and X(2370) in J/ψ→γπ +π -η ′
Authors
Ablikim, MAchasov, MNAn, LAn, QAn, ZHBai, JZBaldini, RBan, YBecker, JBerger, NBertani, MBian, JMBoyko, IBriere, RABytev, VCai, XCao, GFCao, XXChang, JFChelkov, GChen, GChen, HSChen, JCChen, MLChen, SJChen, YChen, YBCheng, HPChu, YPCroninHennessy, DDai, HLDai, JPDedovich, DDeng, ZYDenysenko, IDestefanis, MDing, YDong, LYDong, MYDu, SXDuan, MYFan, RRFang, JFang, SSFeldbauer, FFeng, CQFu, CDFu, JLGao, YGeng, CGoetzen, KGong, WXGreco, MGrishin, SGu, MHGu, YTGuan, YHGuo, AQGuo, LBGuo, YPHao, XQHarris, FAHe, KLHe, MHe, ZYHeng, YKHou, ZLHu, HMHu, JFHu, THuang, BHuang, GMHuang, JSHuang, XTHuang, YPHussain, TJi, CSJi, QJi, XBJi, XLJia, LKJiang, LLJiang, XSJiao, JBJiao, ZJin, DPJin, SJing, FFKavatsyuk, MKomamiya, SKuehn, WLange, JSLeung, JKCLi, CLi, CLi, DMLi, FLi, GLi, HBLi, JCLi, LLi, NBLi, QJLi, WDLi, WGLi, XLLi, XNLi, XQLi, XRLi, ZBLiang, HLiang, YFLiang, YTLiao, GRLiao, XTLiu, BJLiu, BJLiu, CLLiu, CXLiu, CYLiu, FHLiu, FLiu, FLiu, GCLiu, HLiu, HBLiu, HMLiu, HWLiu, JPLiu, KLiu, KYLiu, QLiu, SBLiu, XLiu, XHLiu, YBLiu, YWLiu, YLiu, ZALiu, ZQLoehner, HLu, GRLu, HJLu, JGLu, QWLu, XRLu, YPLuo, CLLuo, MXLuo, TLuo, XLMa, CLMa, FCMa, HLMa, QMMa, TMa, XMa, XYMaggiora, MMalik, QAMao, HMao, YJMao, ZPMesschendorp, JGMin, JMitchell, REMo, XHMotzko, CMuchnoi, NYuNefedov, YNing, ZOlsen, SLOuyang, QPacetti, SPelizaeus, MPeters, KPing, JLPing, RGPoling, RPun, CSJQi, MQian, SQiao, CFQin, XSQiu, JFRashid, KHRong, GRuan, XDSarantsev, ASchulze, JShao, MShen, CPShen, XYSheng, HYShepherd, MRSong, XYSonoda, SSpataro, SSpruck, BSun, DHSun, GXSun, JFSun, SSSun, XDSun, YJSun, YZSun, ZJSun, ZTTang, CJTang, XTang, XFTian, HLToth, DVarner, GSWan, XWang, BQWang, KWang, LLWang, LSWang, MWang, PWang, PLWang, QWang, SGWang, XLWang, YDWang, YFWang, YQWang, ZWang, ZGWang, ZYWei, DHWen, SPWiedner, UWu, LHWu, NWu, WWu, ZXiao, ZJXie, YGXu, GFXu, GMXu, HXu, YXu, ZRXu, ZZXue, ZYan, LYan, WBYan, YHYang, HXYang, MYang, TYang, YYang, YXYe, MYe, MHYu, BXYu, CXYu, LYuan, CZYuan, WLYuan, YZafar, AAZallo, AZeng, YZhang, BXZhang, BYZhang, CCZhang, DHZhang, HHZhang, HYZhang, JZhang, JWZhang, JYZhang, JZZhang, LZhang, SHZhang, TRZhang, XJZhang, XYZhang, YZhang, YHZhang, ZPZhang, ZYZhao, GZhao, HSZhao, JZhao, JZhao, LZhao, LZhao, MGZhao, QZhao, SJZhao, TCZhao, XHZhao, YBZhao, ZGZhao, ZLZhemchugov, AZheng, BZheng, JPZheng, YHZheng, ZPZhong, BZhong, JZhong, LZhou, LZhou, XKZhou, XRZhu, CZhu, KZhu, KJZhu, SHZhu, XLZhu, XWZhu, YSZhu, ZAZhuang, JZou, BSZou, JHZuo, JXZweber, P
KeywordsDecay mode
Invariant-mass spectra
Radiative photons
Statistical significance
Mass spectrometry
Issue Date2011
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2011, v. 106 n. 7 How to Cite?
Abstract
With a sample of (225.2±2.8)×106 J/ψ events registered in the BESIII detector, J/ψ→γπ +π -η ′ is studied using two η ′ decay modes: η ′→π +π -η and η ′→γρ0. The X(1835), which was previously observed by BESII, is confirmed with a statistical significance that is larger than 20σ. In addition, in the π +π -η ′ invariant-mass spectrum, the X(2120) and the X(2370), are observed with statistical significances larger than 7.2σ and 6.4σ, respectively. For the X(1835), the angular distribution of the radiative photon is consistent with expectations for a pseudoscalar. © 2011 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/142496
ISSN
2013 Impact Factor: 7.728
ISI Accession Number ID
Funding AgencyGrant Number
Ministry of Science and Technology of China
National Natural Science Foundation of China
Chinese Academy of Sciences
Istituto Nazionale di Fisica Nucleare
Russian Foundation for Basic Research
Russian Academy of Science (Siberian branch)
U.S. Department of Energy
National Research Foundation of Korea
Funding Information:

We thank the accelerator group and computer staff of IHEP for their effort in producing beams and processing data. We are grateful for support from our institutes and universities and from these agencies: Ministry of Science and Technology of China, National Natural Science Foundation of China, Chinese Academy of Sciences, Istituto Nazionale di Fisica Nucleare, Russian Foundation for Basic Research, Russian Academy of Science (Siberian branch), U.S. Department of Energy, and National Research Foundation of Korea.

References

 

Author Affiliations
  1. Universität Bochum
  2. Graduate University of Chinese Academy of Sciences
  3. Saint Petersburg Nuclear Physics Institute, Russian Academy of Sciences
  4. Nanjing University
  5. Shandong University
  6. Moskovskij Fiziko-Tehniceskij Institut - Gosudarstvennyj Universitet
  7. University of Minnesota Twin Cities
  8. Rijksuniversiteit Groningen
  9. Lanzhou University
  10. The University of Hong Kong
  11. Zhejiang University
  12. Hunan University
  13. Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  14. Zhengzhou University
  15. Laboratori Nazionali di Frascati di INFN
  16. Huazhong Normal University
  17. Wuhan University
  18. Guangxi University
  19. China Center of Advanced Science and Technology World Laboratory
  20. University of Science and Technology of China
  21. Carnegie Mellon University
  22. University of Hawaii at Manoa
  23. Università degli Studi di Torino
  24. Nankai University
  25. Sun Yat-Sen University
  26. Nanjing Normal University
  27. Joint Institute for Nuclear Research, Dubna
  28. Liaoning University
  29. Seoul National University
  30. null
  31. Huangshan University
  32. University of the Punjab Lahore
  33. University of Tokyo
  34. GSI Helmholtz Centre for Heavy Ion Research GmbH
  35. Henan Normal University
  36. Tsinghua University
  37. Indiana University
  38. Guangxi Normal University
  39. University of Washington Seattle
  40. Institute of High Energy Physics Chinese Academy of Science
  41. Peking University
  42. Sichuan University
  43. Chinese University of Hong Kong
  44. Shanxi University
  45. Bogolyubov Institute for Theoretical Physics Nasu
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dc.date.accessioned2011-10-28T02:48:31Z-
dc.date.available2011-10-28T02:48:31Z-
dc.date.issued2011en_HK
dc.identifier.citationPhysical Review Letters, 2011, v. 106 n. 7en_HK
dc.identifier.issn0031-9007en_HK
dc.identifier.urihttp://hdl.handle.net/10722/142496-
dc.description.abstractWith a sample of (225.2±2.8)×106 J/ψ events registered in the BESIII detector, J/ψ→γπ +π -η ′ is studied using two η ′ decay modes: η ′→π +π -η and η ′→γρ0. The X(1835), which was previously observed by BESII, is confirmed with a statistical significance that is larger than 20σ. In addition, in the π +π -η ′ invariant-mass spectrum, the X(2120) and the X(2370), are observed with statistical significances larger than 7.2σ and 6.4σ, respectively. For the X(1835), the angular distribution of the radiative photon is consistent with expectations for a pseudoscalar. © 2011 American Physical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.orgen_HK
dc.relation.ispartofPhysical Review Lettersen_HK
dc.rightsPhysical Review Letters. Copyright © American Physical Society.en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectDecay mode-
dc.subjectInvariant-mass spectra-
dc.subjectRadiative photons-
dc.subjectStatistical significance-
dc.subjectMass spectrometry-
dc.titleConfirmation of the X(1835) and observation of the resonances X(2120) and X(2370) in J/ψ→γπ +π -η ′en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0031-9007&volume=106&issue=7, article no. 072002&spage=&epage=&date=2011&atitle=Confirmation+of+the+X(1835)+and+observation+of+the+resonances+X(2120)+and+X(2370)+in+J/ψ→γπ+π-η′-
dc.identifier.emailLeung, JKC: jkcleung@hku.hken_HK
dc.identifier.emailPun, CSJ: jcspun@hkucc.hku.hken_HK
dc.identifier.authorityLeung, JKC=rp00732en_HK
dc.identifier.authorityPun, CSJ=rp00772en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.106.072002en_HK
dc.identifier.pmid21405509-
dc.identifier.scopuseid_2-s2.0-79951634119en_HK
dc.identifier.hkuros196928en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79951634119&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume106en_HK
dc.identifier.issue7en_HK
dc.identifier.isiWOS:000287392300004-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridAblikim, M=35226931500en_HK
dc.identifier.scopusauthoridAchasov, MN=7003450501en_HK
dc.identifier.scopusauthoridAn, L=35104361000en_HK
dc.identifier.scopusauthoridAn, Q=14822401800en_HK
dc.identifier.scopusauthoridAn, ZH=7102765866en_HK
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