Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-01-24
Phys.Rev.D83:105019,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 9 figures; v4: subtraction of V_infinity corrected to only subtract Re[V_infinity]
Scientific paper
10.1103/PhysRevD.83.105019
We calculate quarkonium binding energies using a realistic complex-valued potential for both an isotropic and anisotropic quark-gluon plasma. We determine the disassociation temperatures of the ground and first excited states considering both the real and imaginary parts of the binding energy. We show that the effect of momentum-space anisotropy is smaller on the imaginary part of the binding energy than on the real part of the binding energy. In the case that one assumes an isotropic plasma, we find disassociation temperatures for the J/psi, Upsilon and chi_b of 1.6 T_c, 2.8 T_c, and 1.5 T_c, respectively. We find that a finite oblate momentum-space anisotropy increases the disassociation temperature for all states considered and results in a splitting of the p-wave states associated with the chi_b first excited state of bottomonium.
Margotta Matthew
McCarty Kyle
McGahan Christina
Strickland Michael
Yager-Elorriaga David
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