标题： 标准大爆炸核合成和普朗克之后原始CNO丰度 显示英文标题

标题： Standard big bang nucleosynthesis and primordial CNO Abundances after Planck

摘要： 原初或大爆炸核合成（BBN）是支持大爆炸模型的三个历史强证据之一。 普朗克卫星任务的最新结果相比之前的WMAP分析，略微改变了重子密度的估计。 本文使用普朗克确定的宇宙学参数，以及核网络的改进和新的光谱观测，更新了轻元素的BBN预测。 原初Li/H丰度略有降低，然而，这一锂值仍然通常比银河系晕星中的观测光谱丰度大三倍。 根据这一“锂问题”的重要性，我们追踪了由于重子密度、中子寿命和网络更新后其BBN计算丰度的小变化。 此外，我们首次提供了6Li、9Be、11B和CNO的产生置信限，这是基于我们扩展网络的广泛蒙特卡洛计算的结果。 特别关注CNO的原初生成。 考虑到CNO形成周围的核反应率的不确定性，我们得到CNO/H\approx (5-30) x 10^{-15}。 我们通过分析产率与反应率之间的相关性并识别新的有影响的反应率，进一步改进了这一估计。 这些不确定的反应率，如果同时变化，可能导致CNO生成显著增加：CNO/H \sim 10^{-13}。 这一结果对于研究黑暗时代中第三星族恒星的形成具有重要意义。 显示英文摘要

摘要： Primordial or big bang nucleosynthesis (BBN) is one of the three historical strong evidences for the big bang model. The recent results by the Planck satellite mission have slightly changed the estimate of the baryonic density compared to the previous WMAP analysis. This article updates the BBN predictions for the light elements using the cosmological parameters determined by Planck, as well as an improvement of the nuclear network and new spectroscopic observations. There is a slight lowering of the primordial Li/H abundance, however, this lithium value still remains typically 3 times larger than its observed spectroscopic abundance in halo stars of the Galaxy. According to the importance of this "lithium problem", we trace the small changes in its BBN calculated abundance following updates of the baryonic density, neutron lifetime and networks. In addition, for the first time, we provide confidence limits for the production of 6Li, 9Be, 11B and CNO, resulting from our extensive Monte Carlo calculation with our extended network. A specific focus is cast on CNO primordial production. Considering uncertainties on the nuclear rates around the CNO formation, we obtain CNO/H \approx (5-30) x 10^{-15}. We further improve this estimate by analyzing correlations between yields and reaction rates and identified new influential reaction rates. These uncertain rates, if simultaneously varied could lead to a significant increase of CNO production: CNO/H \sim 10^{-13}. This result is important for the study of population III star formation during the dark ages.