Color Screening and Quark-Quark Interactions in Finite Temperature QCD

Döring M, Hübner KA, Kaczmarek O, Karsch F (2007)
Phys.Rev. 75(5): 054504.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We analyze the screening of static diquark sources in 2-flavor QCD and compare results with the screening of static quark-antiquark pairs. We show that a two quark system in a fixed color representations is screened at short distances like a single quark source in the same color representation whereas at large distances the two quarks are screened independently. At high temperatures we observe that the relative strength of the interaction in diquark and quark-antiquark systems, respectively, obeys Casimir scaling. We use this result to examine the possible existence of heavy quark-quark bound states in the high temperature phase of QCD. We find support for the existence of $bb$ states up to about $2T_c$ while $cc$ states are unlikely to be formed above $T_c$.
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Phys.Rev.
Band
75
Zeitschriftennummer
5
Artikelnummer
054504
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Döring M, Hübner KA, Kaczmarek O, Karsch F. Color Screening and Quark-Quark Interactions in Finite Temperature QCD. Phys.Rev. 2007;75(5): 054504.
Döring, M., Hübner, K. A., Kaczmarek, O., & Karsch, F. (2007). Color Screening and Quark-Quark Interactions in Finite Temperature QCD. Phys.Rev., 75(5), 054504. doi:10.1103/PhysRevD.75.054504
Döring, M., Hübner, K. A., Kaczmarek, O., and Karsch, F. (2007). Color Screening and Quark-Quark Interactions in Finite Temperature QCD. Phys.Rev. 75:054504.
Döring, M., et al., 2007. Color Screening and Quark-Quark Interactions in Finite Temperature QCD. Phys.Rev., 75(5): 054504.
M. Döring, et al., “Color Screening and Quark-Quark Interactions in Finite Temperature QCD”, Phys.Rev., vol. 75, 2007, : 054504.
Döring, M., Hübner, K.A., Kaczmarek, O., Karsch, F.: Color Screening and Quark-Quark Interactions in Finite Temperature QCD. Phys.Rev. 75, : 054504 (2007).
Döring, Matthias, Hübner, Kay A., Kaczmarek, Olaf, and Karsch, Frithjof. “Color Screening and Quark-Quark Interactions in Finite Temperature QCD”. Phys.Rev. 75.5 (2007): 054504.

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arXiv: hep-lat/0702009

Inspire: 743990

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