Evolution of collectivity as a signal of quark gluon plasma formation in heavy ion collisions

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.024903· OSTI ID:21596684

Mohanty, Payal; Alam, Jan-e; Mohanty, Bedangadas ^[1]

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1. Variable Energy Cyclotron Centre, Kolkata 700064 (India)

A measurement for studying the mass dependence of dilepton interferometry in relativistic heavy-ion collision experiments as a tool to characterize the quark gluon phase is proposed. In calculations involving dileptons, we show that the mass dependence of radii extracted from the virtual photon (dilepton) interferometry provide access to the development of collective flow with time. It is argued that the nonmonotonic variation of Hanbury Brown-Twiss radii with invariant mass of the lepton pairs signals the formation of quark gluon plasma in heavy ion collisions. Our proposal of experimentally measuring the ratio, R{sub out}/R{sub side} for dileptons can be used to estimate the average lifetimes of the partonic as well as the hadronic phases.

• OSTI ID: 21596684
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 84; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVOLUTION
FERMIONS
GLUONS
HADRONS
HEAVY ION REACTIONS
INTERFEROMETRY
LEPTONS
LIFETIME
MASS
MASSLESS PARTICLES
MATTER
NUCLEAR REACTIONS
PHOTONS
QUARK MATTER
QUARKS
RELATIVISTIC RANGE