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Título

Screened potential and quarkonia properties at high temperatures

AutorVijande, Javier ; Krein, G.; Valcarce, A.
Fecha de publicación15-mar-2009
EditorSpringer
CitaciónEuropean Physical Journal A: 40, 89–97 (2009)
ResumenWe perform a quark model calculation of the quarkonia b (b) over bar and c (c) over bar spectra using smooth and sudden string breaking potentials. The screening parameter is scale dependent and can be related to an effective running gluon mass that has a finite infrared fixed point. A temperature dependence for the screening mass is motivated by lattice QCD simulations at finite temperature. Qualitatively different results are obtained for quarkonia properties close to a critical value of the deconfining temperature when a smooth or a sudden string breaking potential is used. In particular, with a sudden string breaking potential quarkonia radii remain almost independent of the temperature up to the critical point, only well above the critical point the radii increase significantly. Such a behavior will impact the phenomenology of quarkonia interactions in medium, in particular for scattering dissociation processes.
Versión del editorhttp://dx.doi.org/10.1140/epja/i2008-10736-9
URIhttp://hdl.handle.net/10261/16668
DOI10.1140/epja/i2008-10736-9
ISSN1434-6001
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