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arXiv 0901.2713astro-ph.CO
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DAMA/LIBRA暗物质探测与根据新的银河系旋转速度测量的其他搜索的兼容性

Compatibility of DAMA/LIBRA dark matter detection with other searches in light of new Galactic rotation velocity measurements

Christopher Savage, Katherine Freese, Paolo Gondolo, Douglas Spolyar

摘要:

DAMA/NaI和DAMA/LIBRA的年调制数据,这可能被解释为弱相互作用暗物质(WIMPs)的存在,在我们的星系晕的信号,重新检查的本地速度相对于星系晕的新测量。在太阳附近,银盘的速度估计为250 km/s,而不是220 km/s。我们的分析是进行与不包括沟道效应。DAMA数据的最佳拟合区域显示为移动到稍低的WIMP质量。DAMA数据与其他实验(CDMS,XENON 10和CRESST I)的零结果的兼容性进行了研究,给出了这些新的速度。7-8 GeV WIMP质量的自旋无关(弹性)散射的一个小区域保持在3 $σ$。质子的自旋相关散射对于5-15 GeV的WIMP质量的直接探测实验是可行的(但其他人认为由于在太阳中的湮灭而受到超级神冈的进一步限制)。

英文摘要:

The DAMA/NaI and DAMA/LIBRA annual modulation data, which may be interpreted as a signal for the existence of weakly interacting dark matter (WIMPs) in our galactic halo, are re-examined in light of new measurements of the local velocity relative to the galactic halo. In the vicinity of the Sun, the velocity of the Galactic disk has been estimated to be 250 km/s rather than 220 km/s. Our analysis is performed both with and without the channeling effect included. The best fit regions to the DAMA data are shown to move to slightly lower WIMP masses. Compatibility of DAMA data with null results from other experiments (CDMS, XENON10, and CRESST I) is investigated given these new velocities. A small region of spin-independent (elastic) scattering for 7-8 GeV WIMP masses remains at 3$σ$. Spin-dependent scattering off of protons is viable for 5-15 GeV WIMP masses for direct detection experiments (but has been argued by others to be further constrained by Super-Kamiokande due to annihilation in the Sun).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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