The bottomonium spectrum at finite temperature from Nf=2+1 lattice QCD

被引：52

作者：

Aarts, G. ^{[1
]}

Allton, C. ^{[1
]}

Harris, T. ^{[2
]}

Kim, S. ^{[3
]}

Lombardo, M. P. ^{[4
]}

Ryan, S. M. ^{[2
]}

Skullerud, J. -I ^{[5
]}

机构：

[1] Swansea Univ, Coll Sci, Dept Phys, Swansea, W Glam, Wales

[2] Univ Dublin Trinity Coll, Sch Math, Dublin 2, Ireland

[3] Sejong Univ, Dept Phys, Seoul 143747, South Korea

[4] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, RM, Italy

[5] Natl Univ Ireland Maynooth, Dept Math Phys, Maynooth, Kildare, Ireland

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2014年 / 07期

基金：

爱尔兰科学基金会; 新加坡国家研究基金会;

关键词：

Lattice QCD; Thermal Field Theory; QUARK-GLUON PLASMA; HEAVY;

D O I：

10.1007/JHEP07(2014)097

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present results on the bottomonium spectrum at temperatures above and below the deconfinement crossover temperature, T-c, from dynamical lattice QCD simulations. The heavy quark is treated with a non-relativistic effective field theory on the lattice and serves as a probe of the hot medium. Ensembles with a finer spatial lattice spacing and a greater range of temperatures below T c than those previously employed by this collaboration are used. In addition, there are N-f = 2 + 1 flavours of Wilson clover quark in the sea with M-pi approximate to 400 MeV and we perform a more careful tuning of the bottom quark mass in this work. We calculate the spectral functions of S and P wave bottomonium states using the maximum entropy method and confirm earlier findings on the survival of the ground state S wave states up to at least 2T(c) and the immediate dissociation of the P wave states above T-c

引用

页数：19

共 47 条

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