通过长寿命轻子束缚态效应解决大爆炸核合成中的锂问题
高能物理 - 唯象学
2014-08-13 v2 宇宙学与河外天体物理
摘要
我们表明,在次最小超对称标准模型(NMSSM)中,若作为次轻超对称粒子的轻子寿命极长,则可解决锂问题。这种长寿命轻子会在大爆炸核合成中诱发奇异核反应,并通过束缚态形成破坏和产生Li 和Li 核。我们研究了最轻超对称粒子为类单态微子(singlino-like neutralino)和类双态微子(bino-like neutralino)的情形,给出了与暗物质观测及希格斯质量一致的参数空间允许区域。
引用
@article{arxiv.1403.1561,
title = {Big-bang nucleosynthesis through bound-state effects with a long-lived slepton in the NMSSM},
author = {Kazunori Kohri and Masafumi Koike and Yasufumi Konishi and Shingo Ohta and Joe Sato and Takashi Shimomura and Kenichi Sugai and Masato Yamanaka},
journal= {arXiv preprint arXiv:1403.1561},
year = {2014}
}
备注
23 pages, 36 figures; corrected typos and added report numbers, acknowledgments and references