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arXiv 1708.02547hep-phhep-ex
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具有双重重子的nuclear fusion的夸克级模拟

Quark-level analogue of nuclear fusion with doubly-heavy baryons

Marek Karliner, Jonathan L. Rosner

摘要:

LHCb最近发现了第一个双粲重子$Ξ_{cc}^{++} = ccu$,其能量为$3621.40 \pm 0.78$ MeV,这意味着两个$c$夸克之间有很大的结合能$\sim 130$ MeV。这种强结合使得夸克重排放热反应$\,Λ_c Λ_c \to Ξ_{cc}^{++}\,n\,$与$Q=12$ MeV成为可能,这是氘-氚核聚变反应$DT\to {}^4{\rm He}\,n$的夸克级类似物。由于两个$b$夸克$\sim 280$ MeV之间的结合能大得多,与$b$夸克的类似反应$\,Λ_b Λ_b \to Ξ_{bb}\,N\,$预期具有显著更大的$Q$值$138\pm 12$ MeV。

英文摘要:

The recent discovery by LHCb of the first doubly-charmed baryon $Ξ_{cc}^{++} = ccu$ at $3621.40 \pm 0.78$ MeV implies a large binding energy $\sim 130$ MeV between the two $c$ quarks. This strong binding enables a quark-rearrangement exothermic reaction $\,Λ_c Λ_c \to Ξ_{cc}^{++}\,n\,$ with $Q=12$ MeV, which is a quark-level analogue of deuterium-tritium nuclear fusion reaction $DT\to {}^4{\rm He}\,n$. Due to much larger binding energy between two $b$ quarks $\sim 280$ MeV, the analogous reaction with $b$ quarks, $\,Λ_b Λ_b \to Ξ_{bb}\,N\,$ is expected to have a dramatically larger $Q$-value, $138\pm 12$ MeV.

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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