Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2008-10-17
PoS LATTICE2008:203,2008
Physics
High Energy Physics
High Energy Physics - Lattice
7 Pages, 2 figures, talk presented at the XXVI International Symposium on Lattice Field Theory, July 14-19, 2008, Williamsburg
Scientific paper
Charmonium dissociation temperatures are studied in a quenched anisotropic lattice QCD with standard plaquette gauge action and O(a) improved Wilson fermion action. Simulations are carried out at temperatures in the range 0.88T_c to 2.3T_c. From the meson correlators, we first subtract the contribution of constant mode, which was reported to mislead the analysis of, in particular, P wave signals. We then calculate effective masses and Bethe-Salpeter wave functions for ground (1S, 1P) and excited states (2S, 2P) using the multi-state variational analysis. To distinguish between bound states and scattering states, we apply two methods: First, we compare effective masses for charmonium correlation functions with finite spatial momenta under different spatial boundary conditions. Since the scattering state energies are sensitive to the boundary conditions, we expect finite volume effects when the charmonium dissociates. Second, we study the Bethe-Salpeter wave function, which should become broad when the charmonium bound state turns into a scattering state. With both methods, we have fond no clear evidences of dissociation for the ground and exited charmonium states up to 2.3T_c so far.
Kanaya Kazuyuki
Ohno Hiroshi
Umeda Takashi
No associations
LandOfFree
Search for the Charmonium Dissociation Temperature with Variational Analysis in Lattice QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Search for the Charmonium Dissociation Temperature with Variational Analysis in Lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search for the Charmonium Dissociation Temperature with Variational Analysis in Lattice QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-351954