Direct Photons At Rhic
Download Direct Photons At Rhic full books in PDF, epub, and Kindle. Read online free Direct Photons At Rhic ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2008 |
| Genre | : |
| ISBN | : |
Download Direct Photons at RHIC. Book in PDF, Epub and Kindle
Direct photons are ideal tools to investigate kinematical and thermodynamical conditions of heavy ion collisions since they are emitted from all stages of the collision and once produced they leave the interaction region without further modification by the medium. The PHENIX experiment at RHIC has measured direct photon production in p+p and Au+Au collisions at 200 GeV over a wide transverse momentum (p{sub T}) range. The p+p measurements allow a fundamental test of QCD, and serve as a baseline when we try to disentangle more complex mechanisms producing high p{sub T} direct photons in Au+Au. As for thermal photons in Au+Au we overcome the difficulties due to the large background from hadronic decays by measuring 'almost real' virtual photons which appear as low invariant mass ee− pairs: a significant excess of direct photons is measured above the above next-to-leading order perturbative quantum chromodynamics calculations. Additional insights on the origin of direct photons can be gained with the study of the azimuthal anisotropy which benefits from the increased statistics and reaction plane resolution achieved in RHIC Year-7 data.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2008 |
| Genre | : |
| ISBN | : |
Download Direct Photon Production of D+A and A+A Collisions at RHIC. Book in PDF, Epub and Kindle
Direct photon productions in minimum bias d+Cu and d+Au and central Cu+Cu and Au+Au at center of mass energies √s = 62.4 GeV and 200GeV at RHIC are investigated systematically by taking into account jet quenching effect, medium-induced photon bremsstrahlung and jet-photon conversion in the hot QGP as well as known cold nuclear matter effects such as the isospin effect, the Cronin effect, shadowing effect, EMC effect and cold nuclear matter energy loss. It is shown that at high p{sub T} the nuclear modification factor for direct photon R{sub AA}(p{sub T}) is suppressed and dominated by cold nuclear matter effects, and there is no large enhancement due to medium-induced photon bremsstrahlung and jet-photon conversion in the hot QGP. Comparison of numerical simulations with experimental data rules out large Cronin enhancement and incoherent photon emission in medium, though large error bars in currently experimental data can not provide tight constraints on other nuclear matter effects.
| Author | : |
| Publisher | : |
| Total Pages | : 4 |
| Release | : 2005 |
| Genre | : |
| ISBN | : |
Download DIRECT PHOTON MEASUREMENT AT RHIC-PHENIX. Book in PDF, Epub and Kindle
| Author | : Thomas Peitzmann |
| Publisher | : |
| Total Pages | : 72 |
| Release | : 2002 |
| Genre | : |
| ISBN | : |
Download Direct Photons from Relativistic Heavy-ion Collisions Book in PDF, Epub and Kindle
| Author | : Björn Bäuchle |
| Publisher | : |
| Total Pages | : 164 |
| Release | : 2010 |
| Genre | : |
| ISBN | : |
Download Direct Photons in Heavy-ion Collisions Book in PDF, Epub and Kindle
| Author | : Guoji Lin |
| Publisher | : |
| Total Pages | : 324 |
| Release | : 2009 |
| Genre | : |
| ISBN | : |
Download Electro-magnetic Physics Studies at RHIC Book in PDF, Epub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 15 |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Download Photon and Dilepton Production in High Energy Heavy Ion Collisions Book in PDF, Epub and Kindle
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.
| Author | : Timothy James Hester |
| Publisher | : |
| Total Pages | : 112 |
| Release | : 2012 |
| Genre | : Quantum chromodynamics |
| ISBN | : |
Download Measurement of Neutral Pions and Direct Photons in Copper + Copper Collisions at 62.4 GeV Center of Mass Energy Book in PDF, Epub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2008 |
| Genre | : |
| ISBN | : |
Download Pion and Photon Production in Heavy Ion Collisions Book in PDF, Epub and Kindle
Measurement of neutral pions and direct photons are closely connected experimentally, on the other hand they probe quite different aspects of relativistic heavy ion collisions. In this short review of the [pi]° results from the PHENIX experiment at RHIC our focus is on the [phi]-integrated nuclear modification factor, its energy and system size dependence, and the impact of these results on parton energy loss models. We also discuss the current status of high p{sub T} and thermal direct photon measurements both in p+p and Au+Au collisions. Recognizing the advantages of measuring not only the 'signal', but also all the 'references' needed for proper interpretation in the same experiments (with same or similar systematics) we argue that RHIC should regularly include d+A and even d+d collisions into its system size and energy scan.
| Author | : Antonino Zichichi |
| Publisher | : World Scientific |
| Total Pages | : 530 |
| Release | : 2012 |
| Genre | : Science |
| ISBN | : 9814374113 |
Download The Most Unexpected at LHC and the Status of High Energy Frontier Book in PDF, Epub and Kindle
Hot Theoretical Topics: Ultraviolet Behavior of N=8 Supergravity (L J Dixon); Is the Best Superstring Model NP Complete? (M R Douglas); Erice Lecture on Microscopic Gravity (G Dvali); Supergravity: Foundations and Applications (S Ferrara); Orienfold String Vacua and Strings at the LHC (D Luest); Seminar on Specialized Topics: Status of Dark Matter and Neutrino Physics (A Bettini); Experimental Evidence for Pointlike Baryons at q2 = 4MB2 (S Pacetti); Neutrino Masses, Dark Matter, Baryon Asymmetry and Inflation can be Explained at Once (M Shaposhnikov); Results from RHIC with Implications for LHC (M J Tannenbaum); Quantum Gravity without Space-Time Singularities or Horizons (G 't Hooft); Diffraction in Deep Inelastic Electron Proton Scattering at HERA (G Wolf); The Lesson Needed for the Future (A Zichichi); Highlights from Laboratories: Highlights from RHIC (P R Sorensen); The LHC and Beyond — The Energy Frontier (R D Heuer); Highlights from the Gran Sasso Underground Laboratory (E Coccia); Highlights from Fermilab (S J Parke); Special Sessions for New Talents: Radiation Damage Studies for Silicon Sensors for the XFEL (H Perrey); Notes on Chern–Simons Theory in the Temporal Gauge (A Smirnov); Dark Matter via Many Copies of the Standard Model (A Vikman).
