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arXiv 1302.0655hep-phnucl-th
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在$\sqrt{s_{NN}}=7\,$ TeV上质子-质子高多重数碰撞中抑制$J/Ψ$的可能性

Possibility for $J/Ψ$ suppression in high multiplicity proton-proton collisions at $\sqrt{s_{NN}}=7\,$TeV

Thomas Lang, Marcus Bleicher

摘要:

我们研究了$\sqrt {s_{NN}}=7\,$ TeV的高多重数质子-质子碰撞中$J/Ψ$的吸收。我们预测修改的$J/Ψ$产量内UrQMD运输方法,其中明确的相互作用的$J/Ψ$与周围的comovers和一个前强子阶段调整截面和$J/Ψ$熔化包括在内。我们提出了在不同的带电粒子多重数pp碰撞的核修改因子的模拟。结果表明,在LHC能区pp碰撞中,$J/Ψ$-介子可能被抑制到更高的粒子多重性。

英文摘要:

We study $J/Ψ$ absorption in high multiplicity proton-proton (pp) collisions at $\sqrt {s_{NN}}=7\,$TeV. We predict a modification of the $J/Ψ$-yield within the UrQMD transport approach, where explicit interactions of the $J/Ψ$ with the surrounding comovers and a prehadronic phase with adjusted cross sections and $J/Ψ$ melting is included. We present the analog of the nuclear modification factor in pp collisions at various charged particle multiplicities. It turns out that $J/Ψ$-Mesons may be suppressed towards higher particle multiplicities in pp collisions at LHC energies.

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