Author: PijllPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Production of Direct Photons in Lead-Lead Collisions
Author: PijllDirect Photon Production in Pb-Pb Collisions at T √sNN
Author: Jaroslav AdamProduction of Photons in Relativistic Heavy-ion Collisions
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In this work it is shown that the use of a hydrodynamical model of heavy-ion collisions which incorporates recent developments, together with updated photon emission rates, greatly improves agreement with both ALICE and PHENIX measurements of direct photons, supporting the idea that thermal photons are the dominant source of direct photon momentum anisotropy. The event-by-event hydrodynamical model uses the impact parameter dependent Glasma model (IP-Glasma) initial states and includes, for the first time, both shear and bulk viscosities, along with second-order couplings between the two viscosities. Furthermore, the effect of both shear and bulk viscosities on the photon rates is studied, and those transport coefficients are shown to have measurable consequences on the photon momentum anisotropy.
Direct photon production in high energy hadron collisions
Author: P.H. HansenDirect Photons in Heavy-ion Collisions
Author: Björn BäuchleProduction of Direct Photons and Neutral Pions in Relativistic Au+Au Collisions
Author: Tadaaki IsobePublisher:
ISBN:
Category : Heavy ion collisions
Languages : en
Pages : 216
Book Description
Photon and Dilepton Production in High Energy Heavy Ion Collisions
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
The recent results on direct photons and dileptons in high energy heavy ion collisions, obtained particularly at RHIC and LHC are reviewed. The results are new not only in terms of the probes, but also in terms of the precision. We shall discuss the physics learned from the results.
Direct Photons from Relativistic Heavy-ion Collisions
Author: Thomas PeitzmannDirect Photon Production in Polarized Pp Collisions
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
We argue that inclusive direct photon production at large transverse momentum in proton-proton interactions with longitudinally polarized beam and target is an incisive probe of the polarized gluon distribution in a proton. We provide predictions of cross sections of range of reasonable choices of the polarized gluon distribution. At current fixed target energies, the cross sections are small but measurable. At collider energies, such as the SSC energy, isolated direct photon production should be considered in order to minimize the nonperturbative contribution due to fragmentation. 9 refs., 3 figs.
Author: R. Ansari