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arXiv 1402.6236hep-phhep-ex
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强子对撞机上X(3872)底类似物和自旋伴体的产生

Production of the bottom analogues and the spin partner of the X(3872) at hadron colliders

Feng-Kun Guo, Ulf-G. Meißner, Wei Wang, Zhi Yang

摘要:

利用Monte Carlo事件发生器Pythia和Herwig,模拟了质子-质子/反质子碰撞中强子对撞机底/粲介子和反介子对的产生.有了这些结果,我们得到了一个数量级的估计的生产率的底部类似物和自旋伙伴的$X(3872)$强子分子在大型强子对撞机和Tevatron实验。我们发现,这些过程的截面是在铌水平,因此,当前和未来的数据集从Tevatron和LHC实验提供了一个显着的发现潜力。我们进一步指出,$X_b/X_{b2}$应在$γΥ(nS) (n=1,2,3)$、$Υ(1S)π^+π^-π^0$或$χ_{bJ}π^+π^-$中重建,而不是在$Υ(nS)π^+π^-$最终状态中重建。

英文摘要:

Using the Monte Carlo event generator tools Pythia and Herwig, we simulate the production of bottom/charm meson and antimeson pairs at hadron colliders in proton-proton/antiproton collisions. With these results, we derive an order-of-magnitude estimate for the production rates of the bottom analogues and the spin partner of the $X(3872)$ as hadronic molecules at the LHC and Tevatron experiments. We find that the cross sections for these processes are at the nb level, so that the current and future data sets from the Tevatron and LHC experiments offer a significant discovery potential. We further point out that the $X_b/X_{b2}$ should be reconstructed in the $γΥ(nS) (n=1,2,3)$, $Υ(1S)π^+π^-π^0$, or $χ_{bJ}π^+π^-$ instead of the $Υ(nS)π^+π^-$ final states.

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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