AN INDIRECT SEARCH FOR WEAKLY INTERACTING MASSIVE PARTICLES IN THE SUN USING 3109.6 DAYS OF UPWARD-GOING MUONS IN SUPER-KAMIOKANDE
AN INDIRECT SEARCH FOR WEAKLY INTERACTING MASSIVE PARTICLES IN THE SUN USING 3109.6 DAYS OF UPWARD-GOING MUONS IN SUPER-KAMIOKANDE
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DOI：
10.1088/0004-637x/742/2/78
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发表时间：
2011-08
期刊：
影响因子：
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通讯作者：
Tetsuya S. Tanaka;K. Abe;K. Abe;Y. Hayato;Y. Hayato;T. Iida;J. Kameda;J. Kameda;Y. Koshio-
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文献类型：
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作者：
Tetsuya S. Tanaka;K. Abe;K. Abe;Y. Hayato;Y. Hayato;T. Iida;J. Kameda;J. Kameda;Y. Koshio-
我们提出了在超级神冈用向上的μ子（upmu）事件间接搜索太阳弱相互作用大质量粒子（WIMP）湮灭的高能中微子的结果。使用SKI-SKIII（3109.6天）数据集进行分析。与预期的大气中微子背景相比，我们在三个upmu类别中寻找来自太阳的中微子信号过量：停止，非淋浴和淋浴。没有观察到明显的过量。在软湮灭通道和硬湮灭通道中，100 GeV c-2的wimp诱导的upmu通量90% c.l上限分别为6.4 × 10−15 cm−2 s−1和4.0 × 10−15 cm−2 s−1。这些极限对应于自旋相关wimp -核子在软湮灭通道和硬湮灭通道中散射截面的上限分别为4.5 × 10−39 cm−2和2.7 × 10−40 cm−2。
We present the result of an indirect search for high energy neutrinos from Weakly Interacting Massive Particle (WIMP) annihilation in the Sun using upward-going muon (upmu) events at Super-Kamiokande. Data sets from SKI-SKIII (3109.6 days) were used for the analysis. We looked for an excess of neutrino signal from the Sun as compared with the expected atmospheric neutrino background in three upmu categories: stopping, non-showering, and showering. No significant excess was observed. The 90% C.L. upper limits of upmu flux induced by WIMPs of 100 GeV c–2 were 6.4 × 10−15 cm−2 s−1 and 4.0 × 10−15 cm−2 s−1 for the soft and hard annihilation channels, respectively. These limits correspond to upper limits of 4.5 × 10−39 cm−2 and 2.7 × 10−40 cm−2 for spin-dependent WIMP-nucleon scattering cross sections in the soft and hard annihilation channels, respectively.