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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
20
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pubmed:dateCreated |
2006-12-12
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pubmed:abstractText |
Using a data sample of 58 x 10(6) J/psi decays collected with the Beijing Spectrometer II detector at the Beijing Electron Positron Collider, searches for invisible decays of eta and eta' in J/psi to phi eta and phi eta' are performed. The phi signals, which are reconstructed in K+K- final states, are used to tag the eta and eta' decays. No signals are found for the invisible decays of either eta or eta', and upper limits at the 90% confidence level are determined to be 1.65 x 10(-3) for the ratio B(eta-->invisible)/B(eta --> gamma gamma) and 6.69 x 10(-2) for B(eta' --> invisible)/B(eta' --> gammagamma). These are the first searches for eta and eta' decays into invisible final states.
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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 |
Nov
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pubmed:issn |
0031-9007
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pubmed:author |
pubmed-author:LiuJJ,
pubmed-author:WangZ YZY,
pubmed-author:WandSS,
pubmed-author:LeeT PTP,
pubmed-author:TongG LGL,
pubmed-author:LisHH,
pubmed-author:BanYY,
pubmed-author:WuNN,
pubmed-author:WangLL,
pubmed-author:AyaTT,
pubmed-author:WangL SLS,
pubmed-author:TaoLL,
pubmed-author:NGVV,
pubmed-author:YonJ LJLJr,
pubmed-author:FayL PLP,
pubmed-author:LinH THT,
pubmed-author:ChenH SHS,
pubmed-author:ZhangH QHQ,
pubmed-author:WangMM,
pubmed-author:SrbVV,
pubmed-author:OOIS KSK,
pubmed-author:YapM JMJ,
pubmed-author:WangD YDY,
pubmed-author:GOHK OKO,
pubmed-author:JitII,
pubmed-author:ZenzJJ,
pubmed-author:LeeM JMJ,
pubmed-author:HOWW,
pubmed-author:HarrisF AFA,
pubmed-author:LinB CBC,
pubmed-author:WinnH EHE,
pubmed-author:ChenJ CJC,
pubmed-author:NgH YHY,
pubmed-author:CauDD,
pubmed-author:YeeJ AJA,
pubmed-author:HayD JDJ,
pubmed-author:LiH HHH,
pubmed-author:LaiY LYL,
pubmed-author:BeckE IEI,
pubmed-author:WangZZ,
pubmed-author:AltM WMW,
pubmed-author:WangL LLL,
pubmed-author:XuG FGF,
pubmed-author:XuYY,
pubmed-author:YubaKK,
pubmed-author:ZhangH YHY,
pubmed-author:YuG WGW,
pubmed-author:YunD JDJ,
pubmed-author:LieAA,
pubmed-author:SunY ZYZ,
pubmed-author:LiX LXL,
pubmed-author:ZhangZ PZP,
pubmed-author:LimC PCP,
pubmed-author:IIYY,
pubmed-author:SunS SSS,
pubmed-author:FayD PDP,
pubmed-author:DeebZ EZE,
pubmed-author:ShaneJJ,
pubmed-author:TaiYY,
pubmed-author:OKIMM,
pubmed-author:RonaAA,
pubmed-author:ZhouLL,
pubmed-author:WangY FYF,
pubmed-author:LINT PTP,
pubmed-author:ZhangB XBX,
pubmed-author:ZhangC CCC,
pubmed-author:TankTT,
pubmed-author:LiW GWG,
pubmed-author:ZhangX YXY,
pubmed-author:LouY CYC,
pubmed-author:ZhangB YBY,
pubmed-author:QinHH,
pubmed-author:MaL LLL,
pubmed-author:ZhaoZ GZG,
pubmed-author:YuanJ MJM,
pubmed-author:YINW HWH,
pubmed-author:LiX QXQ,
pubmed-author:ZhangD HDH,
pubmed-author:LiR YRY,
pubmed-author:GuoY QYQ,
pubmed-author:LiS MSM,
pubmed-author:ZhangJ YJY,
pubmed-author:ChenH XHX,
pubmed-author:YeM HMH
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