Phase Space Description of the Quark and Gluon Production from a Space-Time Dependent Chromofield
نویسندگان
چکیده
We derive source terms for the production of quarks and gluons from the QCD vacuum in the presence of a space-time dependent external chromofield Acl. We found that the source terms for the parton production processes Acl → qq̄, gg also include the annihilation processes qq̄, gg → Acl. These source terms for the parton production from the space-time dependent chromofield are necessary to study the production and equilibration of the quark-gluon plasma in ultrarelativistic heavy-ion collisions at RHIC and LHC. PACS: 12.38.Mh; 11.15.-q; 12.38.Aw; 11.15.Kc Typeset using REVTEX 1
منابع مشابه
Phase Space Description of the Leading Order Quark and Gluon Production from a Space-Time Dependent Chromofield
We derive source terms for the production of quarks and gluons from the QCD vacuum in the presence of a space-time dependent external chromofield Acl to the order of S (1). We found that the source terms for the parton production processes Acl → qq̄ and Acl, AclAcl → gg also include the annihilation processes qq̄ → Acl and gg → Acl, AclAcl. The source terms we derive are applicable for the descri...
متن کاملLeading-Order Gluon-Pair Production from a Space-Time Dependent Chromofield
We describe gluon-pair production from a space-time dependent chromofield via vacuum polarization within the framework of the background field method of QCD. The processes we consider are first order in the action. We derive the corresponding source terms for gluon pair production for situations that can be described by a 1+1 dimensional approach. Especially, we observe that within the range of...
متن کاملGluon Pair Production from a Space-Time Dependent Classical Chromofield via Vacuum Polarization
We investigate the production of gluon pairs from a space-time dependent classical chromofield via vacuum polarization within the framework of the background field method of QCD. The investigation of the production of gluon pairs is important in the study of the evolution of the quark-gluon plasma in ultra-relativistic heavy-ion collisions at RHIC and LHC.
متن کاملGluon Pair Production From Space-Time dependent Chromofield
We study the production of gluon pairs from the QCD vacuum in the presence of a space-time dependent external chromofield by using background field method. This pair production is computed to the lowest order in coupling consatnt αs. It is shown that the gluon pair prodcution is much higher than the qq̄ pair production from the space-time dependent chromofield. Parton productions from this backg...
متن کاملPhoton emission from a parton gas at chemical nonequilibrium.
We compute the hard photon production rate of a chemically non-equilibrated quark-gluon plasma. We assume that the plasma is already thermally equili-brated, i. e. describable by a temperature, but with a phase-space distribution that deviates from the Fermi/Bose distribution by a time dependent factor (fugacity). The photon spectrum is obtained by integrating the photon rate over the space-tim...
متن کامل