Detection of accelerator produced neutrinos at a distance of 250-km
Detection of accelerator produced neutrinos at a distance of 250-km
复制标题
在 250 公里距离处探测到加速器产生的中微子
DOI:
10.1016/s0370-2693(01)00647-5
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发表时间:
2001
影响因子:
4.4
通讯作者:
E. al.
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文献类型:
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作者:
T. Ahn;E. al.
The KEK to Kamioka long-baseline neutrino experiment (K2K) has begun its investigation of neutrino oscillations suggested by atmospheric neutrino observations. Twenty-eight neutrino events have been detected in coincidence with the expected arrival time of the beam in the 22.5 kt fiducial volume of Super-Kamiokande, the far detector at 250 km distance. The expectation is 37.8+3.5−3.8, derived using measurements of neutrino interactions in a near detector and extrapolation using a beam simulation validated by a measurement of pion kinematics after production and focusing. The background is of order 10−3events.
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