Extracting baryon-antibaryon strong-interaction potentials from pΛ ̄ femtoscopic correlation functions
Extracting baryon-antibaryon strong-interaction potentials from pΛ ̄ femtoscopic correlation functions
复制标题
从 pΛ ̄ 飞视相关函数中提取重子-反重子强相互作用势
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
M. Szymanski
中科院分区：
文献类型：
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作者：
A. Kisiel;H. Zbroszczyk;M. Szymanski
The STAR experiment has measured $p\Lambda$, $\bar{p}\bar{\Lambda}$, $\bar{p}\Lambda$, and $p\bar{\Lambda}$ femtoscopic correlation functions in central Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV. The system size extracted for $p\Lambda$ and $\bar{p}\bar{\Lambda}$ is consistent with model expectations and results for other pair types, while for $p\bar{\Lambda}$ and $\bar{p}\Lambda$ it is not consistent with the other two and significantly lower. In addition an attempt was made to extract the unknown parameters of the strong interaction potential for this baryon-antibaryon ($B\bar{B}$) pair. In this work we reanalyze the STAR data, taking into account residual femtoscopic correlations from heavier $B\bar{B}$ pairs. We obtain new estimates for the system size, consistent with the results for $p\Lambda$ and $\bar{p}\bar{\Lambda}$ pairs and with model expectations. We give new estimates for the strong interaction potential parameters for $p\bar{\Lambda}$ and show that similar constraints can be given for parameters for other, heavier $B\bar{B}$ pairs.
The STAR experiment has measured $p\Lambda$, $\bar{p}\bar{\Lambda}$, $\bar{p}\Lambda$, and $p\bar{\Lambda}$ femtoscopic correlation functions in central Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV. The system size extracted for $p\Lambda$ and $\bar{p}\bar{\Lambda}$ is consistent with model expectations and results for other pair types, while for $p\bar{\Lambda}$ and $\bar{p}\Lambda$ it is not consistent with the other two and significantly lower. In addition an attempt was made to extract the unknown parameters of the strong interaction potential for this baryon-antibaryon ($B\bar{B}$) pair. In this work we reanalyze the STAR data, taking into account residual femtoscopic correlations from heavier $B\bar{B}$ pairs. We obtain new estimates for the system size, consistent with the results for $p\Lambda$ and $\bar{p}\bar{\Lambda}$ pairs and with model expectations. We give new estimates for the strong interaction potential parameters for $p\bar{\Lambda}$ and show that similar constraints can be given for parameters for other, heavier $B\bar{B}$ pairs.