标题： 从WMAP三年数据对中微子质量的限制 显示英文标题

标题： Limit on the Neutrino Mass from the WMAP Three Year Data

摘要： 我们通过采用基于多参数空间网格搜索的确定性最小化方法，仅从WMAP三年数据中推导出中微子质量的上限。 假设具有功率律绝热扰动的平坦LCDM模型，我们发现m_nu的和小于2.0 eV，这与WMAP团队的结果一致。 这一结果与WMAP第一年数据得到的限制几乎相同，这意味着从宇宙微波背景单独获得的基本中微子质量限制已经接近达成，这与之前的分析预期一致。 我们还明确了极化数据在推导中微子质量限制中的作用。 显示英文摘要

摘要： We derive an upper limit on the neutrino mass from the WMAP three-year data alone by employing a deterministic minimisation method based on a grid search in multi-parameter space. Assuming the flat LCDM model with power-law adiabatic perturbations, we find the sum of m_nu < 2.0 eV in agreement with the result of the WMAP team. This result, the limit being nearly the same as that from the WMAP first-year data, means that the fundamental limit on the neutrino mass obtainable from the cosmic microwave background alone is already nearly met, as anticipated from the previous analysis. We also clarify the role of the polarisation data in deriving the limit on the neutrino mass.