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arXiv 0910.0586nucl-th
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热QCD介质中1 p夸克偶素态的离解

Dissociation of 1 p quarkonium states in a hot QCD medium

Vineet Agotiya, Vinod Chandra, B. K. Patra

摘要:

我们扩展了最近的工作(Phys. Rev. { \bf C 80},025210(2009))的分析,研究了热QCD介质中粲偶素和底偶素谱($χ_c$和$χ_b$)的1 p态的解离现象.本研究采用了一种介质修正重夸克势,它是通过将介电函数中编码的微扰和非微扰介质效应结合到全康奈尔势中而获得的。与德拜屏蔽的通常图像相比,介质修正势具有完全不同的形式(除了通常的汤川项之外还有长程库仑尾)。我们进一步研究的味道依赖的结合能和解离温度,采用微扰,非微扰,和晶格参数化形式的德拜质量。这些结果与目前理论工作的预测是一致的。

英文摘要:

We extend the analysis of a very recent work (Phys. Rev. {\bf C 80}, 025210 (2009)) to study the dissociation phenomenon of 1p states of the charmonium and bottomonium spectra ($χ_c$ and $χ_b$) in a hot QCD medium. This study employed a medium modified heavy quark potential which is obtained by incorporating both perturbative and non-perturbative medium effects encoded in the dielectric function to the full Cornell potential. The medium modified potential has a quite different form (a long range Coulomb tail in addition to the usual Yukawa term) compared to the usual picture of Debye screening. We further study the flavor dependence of their binding energies and dissociation temperatures by employing the perturbative, non-perturbative, and the lattice parametrized form of the Debye masses. These results are consistent with the predictions of the current theoretical works.

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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