Measurement of a small atmospheric (cid:23) (cid:22) =(cid:23) e ratio The Super-Kamiokande Collaboration
Measurement of a small atmospheric (cid:23) (cid:22) =(cid:23) e ratio The Super-Kamiokande Collaboration
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小大气的测量 (cid:23) (cid:22) =(cid:23) e 比率 Super-Kamiokande 合作
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通讯作者：
S. Raychaudhuri
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作者：
V. Karlapudi;Anjaneya Venkata Vara Prasad Mungara;K. Sengupta;Barbara A Davis;S. Raychaudhuri
在25.5千吨年的超级神冈探测器的照射下，探测到了900个类Muon和983个类电子的单环大气中微子相互作用，动量p e>；100 MeV/c，p(Cid：22)>；200 MeV/c，可见能量小于1.33GeV。通过详细的蒙特卡罗模拟，测得((CID：22)=e)DATA=((CID：22)=e)MC为0：61(CID：6)0：03(STAT：)(CID：6)0：05(Sys：)，这与之前Kamiokande、IMB和Soudan-2实验的结果一致，但比大气中微子产生的理论模型的预期要小。设置为的值
From an exposure of 25.5 kiloton-years of the Super-Kamiokande detector, 900 muon-like and 983 electron-like single-ring atmospheric neutrino interactions were detected with momentum p e > 100 MeV/ c , p (cid:22) > 200 MeV/ c , and with visible energy less than 1.33 GeV. Using a detailed Monte Carlo simulation, the ratio ( (cid:22)=e ) DATA = ( (cid:22)=e ) MC was measured to be 0 : 61 (cid:6) 0 : 03( stat: ) (cid:6) 0 : 05( sys: ), consistent with previous results from the Kamiokande, IMB and Soudan-2 experiments, and smaller than expected from theoretical models of atmospheric neutrino production. to the The value for