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arXiv 0809.4120hep-ex
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测量sqrt(S)=10.54和11.20之间的e+e-> b反b截面GeV

Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV

The BABAR Collaboration, B. Aubert

摘要:

本文报道了在PEP-II电子对撞机上进行的10.54 ~ 11.20 GeV能量范围内的BABAR实验的e+e-> b反b截面测量结果。总的相对误差约为5%,达到超过300质心的能量步骤,分开约5 MeV。这些测量可用于导出关于Y(10860)和Y(11020)共振的参数的精确信息。特别是,我们表明,它们的宽度可能小于以前测量。

英文摘要:

We report e+e- --> b anti-b cross section measurements by the BABAR experiment performed during an energy scan in the range of 10.54 to 11.20 GeV at the PEP-II e+e- collider. A total relative error of about 5% is reached in more than three hundred center-of-mass energy steps, separated by about 5 MeV. These measurements can be used to derive precise information on the parameters of the Y(10860) and Y(11020) resonances. In particular we show that their widths may be smaller than previously measured.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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