arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.2426hep-ph
收藏

从最近的实验看低能轻子CP破坏与轻子发生的关系

Correlations between low energy leptonic CP violation and leptogenesis in the light of recent experiments

H. Zeen Devi

摘要:

轻子生成是产生所观测到的宇宙重子不对称性(BAU)的最有利的机制,BAU意味着高能尺度下的CP破坏。低能轻子CP破坏可望在中微子振荡和$0ν2 β$衰变实验中观测到。通常,不可能将两个CP破坏联系起来。在这里,我们重新审视的问题,连接两个有味道的leptogenesis的情况下,在I型跷跷板在最近的中微子振荡和{ \it普朗克}的数据。通过最近对$θ_{13}$和BAU的精确测量,我们发现了在$10^9$到$10^{12}$ GeV的温度范围内,当轻生发生时,重中微子对CP破坏没有贡献时,低能和高能CP破坏相之间的新的关联。

英文摘要:

Leptogenesis is the most favourable mechanism for generating the observed baryon asymmetry of the Universe (BAU) which implies CP violation in the high energy scale. The low energy leptonic CP violation is expected to be observed in the neutrino oscillations and $0ν2 β$ decay experiments. Generally it is not possible to connect both the CP violations. Here we revisit the issue of connecting the two in flavoured leptogenesis scenario within the Type I seesaw in the light of recent neutrino oscillation and {\it Planck} data. With the recent precise measurements of $θ_{13}$ and BAU we are able to find new correlations between the low and high energy CP violating phases when leptogenesis occurs at temperature between $10^9$ to $10^{12}$ GeV and there is no contribution to CP violation from the heavy neutrino sector.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑