标题： 地下实验中遗迹重稳定中微子的标志特性 显示英文标题

标题： Signature of relic heavy stable neutrinos in underground experiments

摘要： 考虑第四代重稳定中微子，我们计算了此类中微子在宇宙中的遗迹密度。考虑到银河系中重中微子的凝聚，并将计算结果应用于地下寻找WIMP（弱相互作用大质量粒子）的弹性中性流核散射实验数据，我们找到了一个中微子质量的排除区域：60 GeV < m < 290 GeV。当前地下实验得到的限制虽然证实了从宇宙射线谱分析得出的先前限制，但这些新的限制更为可靠。我们还讨论了DAMA实验中由WIMP诱导的弹性散射的第一个迹象，发现了一个非常窄的中微子质量窗口：45 GeV < m < 50 GeV，该窗口与探测器中的可能信号率相兼容。 显示英文摘要

摘要： Considering heavy stable neutrinos of 4th generation we calculate the relic density of such neutrinos in the Universe. Taking into account the condensation of heavy neutrinos in the Galaxy and applying the results of calculations to experimental data from underground experiments on search for WIMPs in elastic neutral current scattering on nuclei we found an exclusion region of neutrino mass 60 GeV < m < 290 GeV. The bounds obtained from present underground experiments while confirming the previous bounds derived from analysis of cosmic ray spectra are more relible ones. We discuss also the first indication of elastic scattering induced by WIMP in DAMA experiment finding a very narrow window of neutrino mass 45 GeV < m < 50 GeV compatible with the possible signal rate in the detector.