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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
2
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pubmed:dateCreated |
2003-8-8
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pubmed:abstractText |
We observe a narrow enhancement near 2m(p) in the invariant mass spectrum of pp pairs from radiative J/psi-->gammapp decays. No similar structure is seen in J/psi-->pi(0)pp decays. The results are based on an analysis of a 58 x 10(6) event sample of J/psi decays accumulated with the BESII detector at the Beijing electron-positron collider. The enhancement can be fit with either an S- or P-wave Breit-Wigner resonance function. In the case of the S-wave fit, the peak mass is below 2m(p) at M=1859(+3)(-10) (stat)+5-25(syst) MeV/c(2) and the total width is Gamma<30 MeV/c(2) at the 90% confidence level. These mass and width values are not consistent with the properties of any known particle.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:status |
PubMed-not-MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0031-9007
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pubmed:author |
pubmed-author:WangZ YZY,
pubmed-author:WandSS,
pubmed-author:TongG LGL,
pubmed-author:WangJJ,
pubmed-author:ZiaS HSH,
pubmed-author:LiKK,
pubmed-author:LisHH,
pubmed-author:BanYY,
pubmed-author:LiJ CJC,
pubmed-author:JonesB DBD,
pubmed-author:WuNN,
pubmed-author:WangLL,
pubmed-author:AyaTT,
pubmed-author:MinK SKS,
pubmed-author:WangL SLS,
pubmed-author:LeeW LWL,
pubmed-author:NGVV,
pubmed-author:YangJJ,
pubmed-author:YonJ LJLJr,
pubmed-author:ChenJJ,
pubmed-author:FayL PLP,
pubmed-author:LinH THT,
pubmed-author:ChenH SHS,
pubmed-author:WangMM,
pubmed-author:YuC SCS,
pubmed-author:OOIS KSK,
pubmed-author:YapM JMJ,
pubmed-author:HuangLL,
pubmed-author:GOHK OKO,
pubmed-author:JitII,
pubmed-author:ZenzJJ,
pubmed-author:FursV AVA,
pubmed-author:HUHH,
pubmed-author:LieII,
pubmed-author:LeeM JMJ,
pubmed-author:HOWW,
pubmed-author:HarrisF AFA,
pubmed-author:VítPP,
pubmed-author:ShenHH,
pubmed-author:WinnH EHE,
pubmed-author:ChenJ CJC,
pubmed-author:NgH YHY,
pubmed-author:CauDD,
pubmed-author:ItoP KPK,
pubmed-author:YeeJ AJA,
pubmed-author:HayD JDJ,
pubmed-author:LiH HHH,
pubmed-author:LUCC,
pubmed-author:LaiY LYL,
pubmed-author:BeckE IEI,
pubmed-author:WangZZ,
pubmed-author:AltM WMW,
pubmed-author:XuG FGF,
pubmed-author:XuYY,
pubmed-author:YangS DSD,
pubmed-author:YubaKK,
pubmed-author:ZhangH YHY,
pubmed-author:YunJJ,
pubmed-author:ZhangY YYY,
pubmed-author:YuG WGW,
pubmed-author:SunY ZYZ,
pubmed-author:ZhangZ PZP,
pubmed-author:LimC PCP,
pubmed-author:IIYY,
pubmed-author:LiFF,
pubmed-author:SunS SSS,
pubmed-author:LiuC FCF,
pubmed-author:HoodHH,
pubmed-author:TaiYY,
pubmed-author:OKIMM,
pubmed-author:SwanH PHP,
pubmed-author:RonaAA,
pubmed-author:EhmII,
pubmed-author:ZhangJJ,
pubmed-author:ZhangQ JQJ,
pubmed-author:ZhouLL,
pubmed-author:WangY FYF,
pubmed-author:LINT PTP,
pubmed-author:ZhangB XBX,
pubmed-author:KongDD,
pubmed-author:FOXJ NJN,
pubmed-author:ZhangC CCC,
pubmed-author:TankTT,
pubmed-author:DoZ TZT
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