Relativistic Description of J/ψ Dissociation in Hot Matter(cq6346)
نویسندگان
چکیده
The mass spectra and binding radii of heavy quark bound states are studied on the basis of the reduced Bethe-Salpeter equation. The critical values of screening masses for cc̄ and bb̄ bound states at a finite temperature are obtained and compared with the previous results given by non-relativistic models. PACS number(s): 13.85.Ni, 25.75.Dw, 12.38.Mh
منابع مشابه
Quark exchange model for charmonium dissociation in hot hadronic matter.
A diagrammatic approach to quark exchange processes in meson-meson scattering is applied to the case of inelastic reactions of the type (Q ¯ Q) + (q¯ q) → (Q¯ q)+(q ¯ Q), where Q and q refer to heavy and light quarks, respectively. This string-flip process is discussed as a microscopic mechanism for charmonium dissociation (absorption) in hadronic matter. The cross section for the reaction J/ψ ...
متن کاملHeavy Quarkonium Dissociation Cross Sections in Relativistic Heavy-Ion Collisions
Many of the hadron-hadron cross sections required for the study of the dynamics of matter produced in relativistic heavy-ion collisions can be calculated using the quark-interchange model. Here we evaluate the low-energy dissociation cross sections of J/ψ, ψ′, χ, Υ, and Υ′ in collision with π, ρ, and K, which are important for the interpretation of heavy-quarkonium suppression as a signature fo...
متن کاملar X iv : n uc l - th / 0 41 00 65 v 2 1 0 Fe b 20 06 D mesons and charmonium states in hot pion matter
We calculate the in-medium D meson self-energies in a hot pion gas induced by resonance interactions with pions. The appropriate resonances in the s, p and d waves of the D meson-pion pair are represented by low lying scalar, vector and tensor D∗ mesons. At temperatures around 200 MeV the D-meson mass drops by 30 MeV and the scattering width grows up to 60 MeV. Similar medium effects are found ...
متن کاملar X iv : n uc l - th / 9 90 40 15 v 2 2 4 M ay 2 00 0 1 Novel features of J / Ψ dissociation in matter
We make a detailed study of the effect that the recently predicted modification of the in-medium masses of charmed mesons would have on J/Ψ dissociation on pion and ρ-meson comovers in relativistic heavy ion collisions. We find a substantial dependence of the J/Ψ absorption rates on the density and temperature of the nuclear matter. This suggests that a quantitative analysis of J/Ψ dissociation...
متن کاملCharmonium chemistry in A+A collisions at relativistic energies
Charmonium production and suppression in heavy-ion collisions at relativistic energies is investigated within different models, i.e. the comover absorption model, the threshold suppression model, the statistical coalescence model and the HSD transport approach. In HSD the charmonium dissociation cross sections with mesons are described by a simple phase-space parametrization including an effect...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999