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arXiv 1102.1882hep-ex
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中微子与OPERA实验电子探测器相互作用的研究

Study of neutrino interactions with the electronic detectors of the OPERA experiment

OPERA Collaboration

摘要:

OPERA实验是基于一种结合了电子探测器和核乳胶的混合技术。OPERA在2008年和2009年CNGS中微子束的物理运行期间收集了μ子-中微子相互作用,该中微子束在CERN产生,能量范围约为5-35 GeV。用OPERA电子探测器分析了靶当量亮度上的总共$5.3 \times 10^{19}$质子:闪烁体条靶跟踪器和配备有电阻板气室和漂移管的磁μ子谱仪,从而可以详细重建μ子-中微子相互作用。使用电子检测器中的测量值识别充电电流(CC)和中性电流(NC)相互作用,并计算NC/CC比。分析了CC相互作用中产生的μ子径迹的动量分布和电荷。对CC和NC样品进行可见光能量的量热测量。计算了CC事例的Bjorken- $y$分布和强子簇射剖面。将结果与电子探测器响应的详细蒙特卡罗模拟进行比较。

英文摘要:

The OPERA experiment is based on a hybrid technology combining electronic detectors and nuclear emulsions. OPERA collected muon-neutrino interactions during the 2008 and 2009 physics runs of the CNGS neutrino beam, produced at CERN with an energy range of about 5-35 GeV. A total of $5.3 \times 10^{19}$ protons on target equivalent luminosity has been analysed with the OPERA electronic detectors: scintillator strips target trackers and magnetic muon spectrometers equipped with resistive plate gas chambers and drift tubes, allowing a detailed reconstruction of muon-neutrino interactions. Charged Current (CC) and Neutral Current (NC) interactions are identified, using the measurements in the electronic detectors, and the NC/CC ratio is computed. The momentum distribution and the charge of the muon tracks produced in CC interactions are analysed. Calorimetric measurements of the visible energy are performed for both the CC and NC samples. For CC events the Bjorken-$y$ distribution and the hadronic shower profile are computed. The results are compared to a detailed Monte Carlo simulation of the electronic detectors' response.

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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