Enhanced photon production from quark-gluon plasma : Finite-lifetime effect

機構典藏 > College of Sciences > Graduate Institute & Department of Physics > Journal Article > Item 987654321/72633

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/72633

Title:	Enhanced photon production from quark-gluon plasma : Finite-lifetime effect
Authors:	Wang, Shang-Yung;Boyanovsky, Daniel
Contributors:	淡江大學物理學系
Date:	2001-01
Issue Date:	2013-07-09 15:07:22 (UTC+8)
Publisher:	College Park: American Physical Society
Abstract:	Photon production from a thermalized quark-gluon plasma of finite lifetime is studied directly in real time with a nonequilibrium formulation that includes off-shell (energy nonconserving) effects. To lowest order we find that production of direct photons form a quark-gluon plasma of temperature T ~ 200 MeV and lifetime t ~ 10-20 fm/c is strongly enhanced by off-shell (anti)quark bremsstrahlung q(\bar{q})->q(\bar{q})\gamma. The yield from this nonequilibrium finite-lifetime effect dominates over those obtained from higher order equilibrium rate calculations in the range of energy E > 2 GeV and falls off with a power law for E >> T.
Relation:	Physical Review D (Particles and Fields) 63(5), 051702(5 pages)
DOI:	10.1103/PhysRevD.63.051702
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

Files in This Item:

File	Description	Size	Format
Enhanced photon production from quark-gluon plasma Finite-lifetime effect.pdf		160Kb	Adobe PDF	1	View/Open
index.html		0Kb	HTML	260	View/Open