The six exotic events, recorded during 1965- 1975 at the underground laboratory in Kolar gold mine field, known as the Kolar events, are re-discussed and compared to Yunnan event. An interesting similarity between the...The six exotic events, recorded during 1965- 1975 at the underground laboratory in Kolar gold mine field, known as the Kolar events, are re-discussed and compared to Yunnan event. An interesting similarity between these two different results is discussed.展开更多
The unusual event with double cores reported by KGF in 1979 cannot be, as suggested by the authors, produced by either neutrinos or muons, but is rather likely to be produced by a heavy and neutral particle C" fr...The unusual event with double cores reported by KGF in 1979 cannot be, as suggested by the authors, produced by either neutrinos or muons, but is rather likely to be produced by a heavy and neutral particle C" from the cosmic rays.展开更多
The L3＋C experiment, taking advantage of the L3 muon magnetic spectrometer, measured the spatial tracks of charged cosmic ray particles to obtain rigidity as well as velocity. One possible low velocity exotic particl...The L3＋C experiment, taking advantage of the L3 muon magnetic spectrometer, measured the spatial tracks of charged cosmic ray particles to obtain rigidity as well as velocity. One possible low velocity exotic particle is observed. The existing uncertainties are discussed, and the flux upper limit of the low velocity exotic particles from this observation is deduced based on the assumption of a null observation. The result is 6.2×10^-10 cm^-2·s^-1·sr^-1 at 90% confidence level in the velocity range from 0.04c to 0.5c.展开更多
An effort to search for Kolar-like events within the data set of the L3＋C experiment is reported. From a total of 0.89×10^10 triggered events there are no reliable two-prong Kolar-like events observed. The corre...An effort to search for Kolar-like events within the data set of the L3＋C experiment is reported. From a total of 0.89×10^10 triggered events there are no reliable two-prong Kolar-like events observed. The corresponding event flux upper limit 7.1 × 10^-13 cm^-2. s^-1 . sr^-1 at 90% confidence level is deduced based on some reasonable assumptions.展开更多
基金Project supported in part by the National Natural Science Foundation of China.
文摘The six exotic events, recorded during 1965- 1975 at the underground laboratory in Kolar gold mine field, known as the Kolar events, are re-discussed and compared to Yunnan event. An interesting similarity between these two different results is discussed.
基金Project supported in part by the National Natural Science Foundation of China.
文摘The unusual event with double cores reported by KGF in 1979 cannot be, as suggested by the authors, produced by either neutrinos or muons, but is rather likely to be produced by a heavy and neutral particle C" from the cosmic rays.
基金Supported by Chinese Academy of SciencesNational Natural Science Foundation of China and Ministry of Science andTechnology of China
文摘The L3＋C experiment, taking advantage of the L3 muon magnetic spectrometer, measured the spatial tracks of charged cosmic ray particles to obtain rigidity as well as velocity. One possible low velocity exotic particle is observed. The existing uncertainties are discussed, and the flux upper limit of the low velocity exotic particles from this observation is deduced based on the assumption of a null observation. The result is 6.2×10^-10 cm^-2·s^-1·sr^-1 at 90% confidence level in the velocity range from 0.04c to 0.5c.
基金Supported by National Natural Science Foundation of China,Ministry of Science and Technology of China and Bureau of International Cooperation,Chinese Academy of Science
文摘An effort to search for Kolar-like events within the data set of the L3＋C experiment is reported. From a total of 0.89×10^10 triggered events there are no reliable two-prong Kolar-like events observed. The corresponding event flux upper limit 7.1 × 10^-13 cm^-2. s^-1 . sr^-1 at 90% confidence level is deduced based on some reasonable assumptions.
