Abstract:Experimental evidence from RHIC indicates that matter having an energy density far in excess of the value required for the creation of a deconfined phase is produced in ultrarelativistic Au+Au collisions at √ s NN =200 GeV. This matter thermalizes rapidly, is strongly interacting, and displays hydrodynamic properties akin to a fluid with very low viscosity. Studies of the interaction of hard scattered partons with this matter provide an important probe of its properties. In fact, studies of the suppression of … Show more
“…Lajoie presented the latest data from Phenix concerning this energy loss [28]. One has a good phenomenological understanding of jet energy loss for light quarks, but a detailed quantitative theory is difficult [4].…”
“…Lajoie presented the latest data from Phenix concerning this energy loss [28]. One has a good phenomenological understanding of jet energy loss for light quarks, but a detailed quantitative theory is difficult [4].…”
“…Quarks and gluons condense to create a gas of nucleons and light mesons, the latter decay subsequently. Jet quenching for light mesons at RHIC is well explained by radiative energy loss calculations [10,11]. As a result, probing the variations of hadronic parameters depending on temperature can provide us valuable information on the new phase of matter, i.e.…”
We have computed the masses and decay constants of isotriplet π 2 (1670), the isoscalar η 2 (1645) and η 2 (1870) states as the ground-state nonet of 1 1 D 2 case within the Thermal QCD sum rules framework. This method is applied to the spectral changes of pseudotensor mesons at high temperatures including quark, gluon, and mixed condensates up to the five dimensions. We found that their masses and decay constants are insensitive to temperature in low-temperature region. At the near critical temperature, we observed an exponential decrease of the masses of π 2 , η 2 (1645), and η 2 (1870), but while the decay constant of π 2 is fallen, that of η 2 (1645) and η 2 (1870) is increased as a function of temperature. The modification of condensates at T = 0 is crucial to the change of considered mesons properties in hot medium. We discuss and interpret the implications of the physical meaning of our results.
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