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Preprint
Report number arXiv:0807.0494
Title Anomalous Line-Shape of Cross Sections for e+eHadrons in the Center-of-Mass Energy Region between 3.650 and 3.872 GeV
Author(s) BES Collaboration  ყველა 157 ავტორის ჩვენება
Publication 2008
Imprint 04 Jul 2008
Number of pages 6
Note Comments: 6 pages, 3figures
6 pages, 3figures
Subject category hep-ex
Abstract We observe an obvious anomalous line-shape of the e+ehadrons total cross sections in the energy region between 3.700 and 3.872 GeV from the data samples taken with the BES-II detector at the BEPC Collider. Re-analysis of the data shows that it is inconsistent with the explanation for only one simple ψ(3770) resonance with a statistical significance of 7σ. The anomalous line-shape may be explained by two possible enhancements of the inclusive hadron production near the center-of-mass energies of 3.764 GeV and 3.779 GeV, indicating that either there is likely a new structure in addition to the ψ(3770) resonance around 3.773 GeV, or there are some physics effects reflecting the DD¯ production dynamics.
Other source Inspire
Copyright/License arXiv nonexclusive-distrib. 1.0



 


 ჩანაწერი შექმნილია 2008-07-04, ბოლოს შესწორებულია 2021-12-24


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