Measurement of Neutrino Masses from Relative Velocities
文献类型：期刊论文
| 作者 | Zhu, Hong-Ming1 ; Pen, Ue-Li2,3; Chen, Xuelei1,4; Inman, Derek2; Yu, Yu5
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| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2014-09-24 |
| 卷号 | 113期号:13 |
| 英文摘要 | We present a new technique to measure neutrino masses using their flow field relative to dark matter. Present day streaming motions of neutrinos relative to dark matter and baryons are several hundred km/s, comparable with their thermal velocity dispersion. This results in a unique dipole anisotropic distortion of the matter-neutrino cross power spectrum, which is observable through the dipole distortion in the cross correlation of different galaxy populations. Such a dipole vanishes if not for this relative velocity and so it is a clean signature for neutrino mass. We estimate the size of this effect and find that current and future galaxy surveys may be sensitive to these signature distortions. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000342154100004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6565]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Beijing 100012, Peoples R China 2.Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada 3.Canadian Inst Adv Res, CIFAR Program Gravitat & Cosmol, Toronto, ON M5G 1Z8, Canada 4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 5.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Hong-Ming,Pen, Ue-Li,Chen, Xuelei,et al. Measurement of Neutrino Masses from Relative Velocities[J]. PHYSICAL REVIEW LETTERS,2014,113(13). |
| APA | Zhu, Hong-Ming,Pen, Ue-Li,Chen, Xuelei,Inman, Derek,&Yu, Yu.(2014).Measurement of Neutrino Masses from Relative Velocities.PHYSICAL REVIEW LETTERS,113(13). |
| MLA | Zhu, Hong-Ming,et al."Measurement of Neutrino Masses from Relative Velocities".PHYSICAL REVIEW LETTERS 113.13(2014). |
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来源：国家天文台
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