Rapidity distribution of photons from an anisotropic quark-gluon plasma
نویسندگان
چکیده
منابع مشابه
Se p 20 08 Photons from anisotropic Quark - Gluon - Plasma
We calculate medium photons due to Compton and annihilation processes in an anisotropic media. The effects of time-dependent momentum-space anisotropy of Quark-Gluon-Plasma (QGP) on the medium photon production are discussed. Such an anisotropy can results from the initial rapid longitudinal expansion of the matter, created in relativistic heavy ion collisions. A phenomenological model for the ...
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Given the present knowledge about strong interaction, one has to assume that in collisions of heavy nuclei with sufficiently high kinetic energy, a high-energy-density region can be formed in which the hadrons dissolve into their constituents, i.e., into quark-gluon Several estimates2 lead to 0.5-2 ~ e ~ / f m ~ or the critical energy density. The quark-gluon plasma represents a new physical ph...
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It has been predicted that dilepton production may be used as a quark-gluon plasma probe. We calculate the rapidity distributions of thermal dileptons produced by an evolving quark-gluon plasma assuming a longitudinal scaling expansion with initial conditions locally determined from the hadronic rapidity density. These distributions are compared with Drell-Yan production and semileptonic charm ...
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We calculate leading-order dilepton yields from a quark-gluon plasma which has a timedependent anisotropy in momentum space. Such anisotropies can arise during the earliest stages of quark-gluon plasma evolution due to the rapid longitudinal expansion of the created matter. A phenomenological model for the proper time dependence of the parton hard momentum scale, phard , and the plasma anisotro...
متن کاملPhoton production from an anisotropic quark-gluon plasma
We calculate photon production from a quark-gluon plasma which is anisotropic in momentum space including the Compton scattering, q(q̄) g → q(q̄) γ, and annihilation, q q̄ → g γ, processes. We show that for a quark-gluon plasma which has an oblate momentum-space anisotropy, 〈p2L〉 < 〈p 2 T 〉, the photon production rate has an angular dependence which is peaked transverse to the beam line. We propos...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2010
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.81.054904