منابع مشابه
Photon production by a quark-gluon plasma
Photon or dilepton production by a hot plasma is expected to reflect rather cleanly the state of the system. Indeed, in the collision of two heavy nuclei, the typical size of the system is much smaller than the mean free path of particles that feel only the electromagnetic interactions, which enables photons and leptons to escape freely. However, it has been realized recently that those rates a...
متن کاملPhoton production from a quark-gluon plasma.
In-medium interactions of a particle in a hot plasma are considered in the framework of thermal field theory. The formalism to calculate gauge invariant rates for photon and dilepton production from the medium is given. In the application to a QED plasma, astrophysical consequences are pointed out. The photon production rate from strongly interacting quarks in the quark–gluon plasma, which migh...
متن کاملEnhanced photon production near the light – cone by a hot plasma ∗ †
1.1. Hard thermal loop resummation In this talk, we study the production of soft photons by a hot quark gluon plasma. Indeed, this is a good way of testing our understanding of the infrared and collinear behavior of thermal gauge theories. Intuitively, these difficulties are increased with respect to the T = 0 case, because of the presence in the Feynman rules of Bose-Einstein factors nB(k0) = ...
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...
متن کاملElectron and Photon Production From Relativistic Laser-Plasma Interactions
The interaction of short and intense laser pulses with plasmas is a very efficient source of relativistic electrons with tunable properties. In low density plasmas, we observed bunches of electrons up to 200 MeV, accelerated in the wake field of the laser pulse. Less energetic electrons (tens of MeV) have been obtained, albeit with a higher efficiency, during the interaction with a solid target...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2002
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(01)01398-7