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arXiv 1007.4585hep-phnucl-th
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重子-介子比的动力学涨落

Dynamical Fluctuations in Baryon--Meson Ratios

A. Tawfik

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6 pages (revtex4-style), 2 figures with 4 eps graphs and 1 table
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摘要：

本文研究了核子-核子碰撞$\sqrt{s}$中K介子-质子和质子-π介子比随事件的动力学涨落。根据在大$\sqrt{s}$下强子到夸克-胶子等离子体相变所引起的相空间体积的变化，对单粒子分布函数$f$作了较大的修正.在巨正则配分函数中，特别是在$\sqrt{s}>17$ GeV处，实现了$f$和相空间体积的变化，使得强子共振气体模型在考虑实验接受度${\cal A}$和夸克相空间占据因子$γ$时，能够再现$(K^++K^-)/(p+\overline{p})$和$(p+\overline{p})/(π^++π^-)$比值在整个$\sqrt{s}$范围内的动力学涨落.

英文摘要：

The event-by-event dynamical fluctuations in kaon-to-proton and proton-to-pion ratios have been studied in dependence on center--of--mass energies of nucleon--nucleon collisions $\sqrt{s}$. Based on changing phase space volume which apparently is the consequence of phase transition from hadrons to quark--gluon plasma at large $\sqrt{s}$, the single--particle distribution function $f$ is assumed to be rather modified. Varying $f$ and phase space volume are implemented in the grand--canonical partition function, especially at $\sqrt{s}>17$ GeV, so that hadron resonance gas model, when taking into account the experimental acceptance ${\cal A}$ and quark phase space occupation factor $γ$, turns to be able to reproduce the dynamical fluctuations in $(K^++K^-)/(p+\overline{p})$ and $(p+\overline{p})/(π^++π^-)$ ratios over the entire range of $\sqrt{s}$.

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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