Anchordoqui Luis A, Feng Jonathan L, Goldberg Haim
Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
Phys Rev Lett. 2006 Jan 20;96(2):021101. doi: 10.1103/PhysRevLett.96.021101. Epub 2006 Jan 19.
Ultrahigh energy cosmic rays and neutrinos probe energies far above the weak scale. Their usefulness might appear to be limited by astrophysical uncertainties; however, by simultaneously considering up- and down-going events, one may disentangle particle physics from astrophysics. We show that present data from the AMANDA experiment in the South Pole ice already imply an upper bound on neutrino cross sections at energy scales that will likely never be probed at man-made accelerators. The existing data also place an upper limit on the neutrino flux valid for any neutrino cross section. In the future, similar analyses of IceCube data will constrain neutrino properties and fluxes at the theta(10%) level.
超高能宇宙射线和中微子所探测的能量远高于弱电标度。它们的用途似乎受到天体物理不确定性的限制；然而，通过同时考虑向上和向下传播的事件，可以将粒子物理学与天体物理学区分开来。我们表明，南极冰层中阿曼达实验的现有数据已经暗示了在人造加速器可能永远无法探测到的能量尺度下中微子截面的上限。现有数据还对适用于任何中微子截面的中微子通量设定了上限。未来，对冰立方实验数据的类似分析将把中微子性质和通量限制在10%的水平。
