Form factor effects in the direct detection of isospin-violating dark matter
文献类型：期刊论文
| 作者 | Zheng, Hao1,2; Zhang, Zhen1,2; Chen, Lie-Wen1,2,3 |
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2014-08-01 |
| ISSN号 | 1475-7516 |
| 关键词 | Dark Matter Detectors Dark Matter Simulations Dark Matter Experiments |
| DOI | 10.1088/1475-7516/2014/08/011 |
| 文献子类 | Article |
| 英文摘要 | Isospin-violating dark matter (IVDM) provides a possible mechanism to ameliorate the tension among recent direct detection experiments. For IVDM, we demonstrate that the results of direct detection experiments based on neutron-rich target nuclei may depend strongly on the density dependence of the symmetry energy which is presently largely unknown and controls the neutron skin thickness that reflects the relative difference of neutron and proton form factors in the neutron-rich nuclei. In particular, using the neutron and proton form factors obtained from Skyrme-Hartee-Fock calculations by varying the symmetry energy within the uncertainty region set by the latest model-independent measurement of the neutron skin thickness of Pb-208 from PREX experiment at JLab, we find that, for IVDM with neutron-to-proton coupling ratio fixed to f(n)/f(p) = -0.7, the form factor effect may enhance the sensitivity of Xe-based detectors (e.g., XENON100 and LUX) to the DM-proton cross section by a factor of 3 in the DM mass region constrained by CMDS-II(Si) and even by more than an order of magnitude for heavy DM with mass larger than 80 GeV, compared with the results using the empirical Helm form factor. Our results further indicate that the form factor effect can significantly modify the recoil spectrum of Xe-based detectors for heavy IVDM with f(n)/f(p) = -0.7. |
| WOS关键词 | ELECTRON-SCATTERING ; SYMMETRY ENERGY ; PARAMETRIZATION ; DENSITIES ; NUCLEI ; PB-208 ; RADIUS ; STATE |
| 资助项目 | Science and Technology Commission of Shanghai Municipality[11DZ2260700] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000341848800011 |
| 源URL | [http://119.78.100.186/handle/113462/49995]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Zheng, Hao |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China 2.Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China 3.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Hao,Zhang, Zhen,Chen, Lie-Wen. Form factor effects in the direct detection of isospin-violating dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014. |
| APA | Zheng, Hao,Zhang, Zhen,&Chen, Lie-Wen.(2014).Form factor effects in the direct detection of isospin-violating dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. |
| MLA | Zheng, Hao,et al."Form factor effects in the direct detection of isospin-violating dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2014). |
入库方式： OAI收割
来源：近代物理研究所
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