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arXiv 0911.5397physics.ins-det
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钨酸铅中μ子阻止本领的测量

Measurement of the Muon Stopping Power in Lead Tungstate

CMS Collaboration

摘要:

利用CMS探测器收集的大量宇宙线事件测量了电磁量能器钨酸铅中μ子的比能量损失。测量的动量范围从5 GeV/c到1 TeV/c。结果与整个范围内的预期一致。量热计的能量尺度,设置为120 GeV/c的电子,验证到亚GeV区域使用能量存款,为100兆电子伏,与低动量μ子。测得钨酸铅中μ介子的临界能量为160+5/-6 ± 8 GeV,与预期值相符。这是首次在实验上测定μ子临界能量。

英文摘要:

A large sample of cosmic ray events collected by the CMS detector is exploited to measure the specific energy loss of muons in the lead tungstate of the electromagnetic calorimeter. The measurement spans a momentum range from 5 GeV/c to 1 TeV/c. The results are consistent with the expectations over the entire range. The calorimeter energy scale, set with 120 GeV/c electrons, is validated down to the sub-GeV region using energy deposits, of order 100 MeV, associated with low-momentum muons. The muon critical energy in lead tungstate is measured to be 160+5/-6 plus or minus 8 GeV, in agreement with expectations. This is the first experimental determination of muon critical energy.

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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