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arXiv 2502.09409hep-phhep-exhep-lat
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全重味$QQQQ'\bar{Q}$五夸克候选体的研究

Investigation of full heavy $ QQQQ'\bar{Q}$ pentaquark candidates

K. Azizi, Y. Sarac, H. Sundu

AI总结:

针对粒子物理中奇特态研究趋势,本研究分析含$cccb\bar{c}$和$bbbc\bar{b}$夸克的自旋宇称为$\frac{1}{2}^-$的五夸克候选体,计算其质量及与真空的流耦合常数。

摘要:

粒子物理学领域近期的研究与实验突破已识别出大量奇特态。每一项新发现不仅激发对未来成果的期待,还推动对更多未知态的探索兴趣。受此视角及近期含更多重夸克的标准与奇特强子识别成果的启发,本研究对自旋宇称为$\frac{1}{2}^-$、夸克含量为$cccb\bar{c}$和$bbbc\bar{b}$的可能五夸克候选体进行能谱分析,通过考虑相关洛伦兹结构(包括$\slashed{p}$和$\mathbbm{1}$)计算其质量:$P_{(4cb)}$态质量分别为$11388.30\pm107.79$ MeV和$11368.30\pm112.68$ MeV,$P_{(4bc)}$态质量分别为$20998.30\pm121.52$ MeV和$20990.50\pm125.87$ MeV;此外,本研究还提供了这些态与真空的流耦合常数,这对分析其潜在衰变模式至关重要。

英文摘要:

Recent breakthroughs in research and experimentation have led to the identification of numerous exotic states in particle physics. Each new discovery not only sparks excitement for future findings but also fuels interest in uncovering additional unknown states. Motivated by this perspective and the recent identification of both standard and exotic hadrons with an increasing number of heavy quarks, this study conducts a spectroscopic analysis of possible pentaquark candidates with spin-parity $\frac{1}{2}^-$, and quark content of $cccb\bar{c}$ and $bbbc\bar{b}$. The masses of these states are calculated by considering the relevant Lorentz structures, including $\slashed{p}$ and $\mathbbm{1}$, yielding the following results, respectively: for the $P_{(4cb)}$ state, $m_{P_{(4cb)}} = 11388.30 \pm 107.79$~MeV and $m_{P_{(4cb)}} = 11368.30 \pm 112.68$~MeV, and for the $P_{(4bc)}$ state, $m_{P_{(4bc)}} = 20998.30 \pm 121.52$~MeV and $m_{P_{(4bc)}} = 20990.50 \pm 125.87$~MeV. Additionally, the current coupling constants of these states to the vacuum, which are essential for analyzing their potential decay modes, are also provided in this study.

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。

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