信用利差与债券市场流动性的动态关系分析

本文利用我国交易所和银行间两个国债市场流动性差异提取我国债券市场的流动性溢酬,首先运用多元线性回归模型验证了流动性溢酬是影响信用利差的系统性因子,然后运用VAR模型和Granger因果检验探讨流动性溢酬与信用利差之间的动态关系,并进一步引入带马尔可夫机制转换的VAR模型,分析在正常机制和危机机制下流动性溢酬对信用利差的不同影响。实证结果表明：前一期流动性溢酬对当期信用利差有显著为正的影响,危机机制下的影响要显著高于正常机制,而且危机机制下流动性溢酬对低等级债信用利差的冲击程度要大于对高等级债信用利差的冲击程度,但冲击效应的持续时间则少于高等级债。国家自然科学基金青年项目“限价指令簿的信息内涵研究：基于市场微观结构的视角”（71301137

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies