Search for dark matter annihilations in the sun with the 79-string IceCube detector.
Search for dark matter annihilations in the sun with the 79-string IceCube detector.
复制标题
DOI：
10.1103/physrevlett.110.131302
复制
发表时间：
2012-12
影响因子：
8.6
通讯作者：
M. Aartsen;R. Abbasi;Y. Abdou;M. Ackermann;J. Adams;J. Aguilar;M. Ahlers;D. Altmann;J. Auffenbe
中科院分区：
文献类型：
--
作者：
M. Aartsen;R. Abbasi;Y. Abdou;M. Ackermann;J. Adams;J. Aguilar;M. Ahlers;D. Altmann;J. Auffenbe
我们用冰立方中微子望远镜的79弦配置对太阳中心暗物质湮灭产生的μ子中微子进行了搜索。DeepCore子阵列首次被纳入分析，降低了能量阈值，并将搜索范围扩展到南方夏季。在2010年6月至2011年5月期间收集的317天的数据与预期的大气μ子和中微子背景一致。对于质量在20-5000 GeV/c2范围内的弱相互作用大质量粒子（WIMP），暗物质湮灭率的上限被设定为自旋依赖和自旋独立的质子散射截面的上限。对于大多数WIMP模型来说，这是迄今为止最严格的依赖自旋的质子横截面限制，超过35gev /c2。
We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore subarray is included in the analysis, lowering the energy threshold and extending the search to the austral summer. The 317 days of data collected between June 2010 and May 2011 are consistent with the expected background from atmospheric muons and neutrinos. Upper limits are set on the dark matter annihilation rate, with conversions to limits on spin-dependent and spin-independent scattering cross sections of weakly interacting massive particles (WIMPs) on protons, for WIMP masses in the range 20-5000 GeV/c2. These are the most stringent spin-dependent WIMP-proton cross section limits to date above 35 GeV/c2 for most WIMP models.