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arXiv 1005.1209hep-lathep-phnucl-th
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格点量子色动力学中粲偶素谱函数的动量依赖性

Momentum-dependence of charmonium spectral functions from lattice QCD

M. B. Oktay, J. I. Skullerud

摘要:

本文计算了Nf=2的各向异性晶格上非零动量J/psi和eta_c介子的动量因子和谱函数。我们没有发现证据表明,在目前的精度水平的重大动量依赖。在赝标沟道中,基态在T~ 450 MeV或2.1Tc处仍能存在。在矢量通道中,介质修饰可以在较低温度下发生。

英文摘要:

We compute correlators and spectral functions for J/psi and eta_c mesons at nonzero momentum on anisotropic lattices with Nf=2. We find no evidence of significant momentum dependence at the current level of precision. In the pseudoscalar channel, the ground state appears to survive up to T~450MeV or 2.1T_c. In the vector channel, medium modifications may occur at lower temperatures.

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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