Lattice NRQCD study of in-medium bottomonium states using $N_f = 2+1, 48^3 \times 12$ HotQCD configurations
Lattice NRQCD study of in-medium bottomonium states using $N_f = 2+1, 48^3 \times 12$ HotQCD configurations
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DOI：
10.22323/1.187.0169
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发表时间：
2013-10
期刊：
影响因子：
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通讯作者：
Seyong Kim;P. Petreczky;A. Rothkopf
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文献类型：
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作者：
Seyong Kim;P. Petreczky;A. Rothkopf
用格子NRQCD方法研究了非零温度，140.4(β=6.664)≤T≤221(β=7.280)(MeV)(跃迁温度为154(9)(MeV))下，光动力学Nf=2+1(u，S/ms=7.280)交错夸克作用组态下，底单态相关器的行为。为了了解夸克子态的有限温度效应，比较了32个⁴(β=6.664，6.800和6.950个晶格和48？×(β=7.280)晶格的零温行为。我们发现温度对S波底相态的影响很小，但在转变温度以上，P波底相态表现出明显的温度依赖性。
The behavior of bottomonium state correlators at non-zero temperature, 140.4(β = 6.664) ≤ T ≤ 221(β = 7.280) (MeV), where the transition temperature is 154(9) (MeV), is studied, using lattice NRQCD on 48³ ×12 HotQCD HiSQ action configurations with light dynamical Nf = 2+1 (mu,s/ms = 0.05) staggered quarks. In order to understand finite temperature effects on quarkonium states, zero temperature behavior of bottomonium correlators is compared based on 32⁴ (β = 6.664,6.800 and 6.950) and 48³ ×64 (β = 7.280) lattices. We find that temperature effects on S-wave bottomoniumstates are small but P-wave bottomoniumstates show a noticeable temperature dependence above the transition temperature.