Lattice calculation of dilepton production in peripheral relativistic heavy-ion collisions
In this talk, I will concentrate on electromagnetic dilepton production in peripheral heavy-ion collisions at relativistic energies. For very heavy systems such as Au + Au,U + U the effective coupling constant Z/alpha/ /approx/ 0.5, thus casting doubt on the applicability of perturbation theory. We shall therefore utilize a nonperturbative lattice approach. The main problem to be solved is the Dirac equation for leptons in the presence of strong transient EM fields (E/sub max/ = 10/sup 25/V/m for U + U at RHIC energies). There are several motivations for these studies: We will be able to probe nonperturbative QED in an entirely new energy regime. The hadronic (Drell-Yan) production of dileptons has been widely discussed as a signature of the quark-gluon plasma phase transition. The dominant background will be the coherent EM pair production by the heavy ions in relativistic motion. Lepton pair production with capture of the negatively charged lepton by one of the ions is one of the most serious beam-loss mechanisms for relativistic heavy-ion colliders. 7 refs., 2 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5762047
- Report Number(s):
- CONF-8905143-8; ON: DE89015369
- Resource Relation:
- Conference: NATO international advanced courses on the nuclear equation of state, Peniscola, Spain, 12 May - 3 Jun 1989; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
LEPTONS
PAIR PRODUCTION
CALCULATION METHODS
COUPLING CONSTANTS
DIRAC EQUATION
EQUATIONS OF STATE
GOLD 197 REACTIONS
GOLD 197 TARGET
HAMILTONIANS
HEAVY ION REACTIONS
NUMERICAL SOLUTION
PERTURBATION THEORY
QUARK-GLUON INTERACTIONS
SERIES EXPANSION
WAVE FUNCTIONS
CHARGED-PARTICLE REACTIONS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FUNCTIONS
INTERACTIONS
MATHEMATICAL OPERATORS
NUCLEAR REACTIONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE INTERACTIONS
QUANTUM OPERATORS
TARGETS
WAVE EQUATIONS
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties
653003 - Nuclear Theory- Nuclear Reactions & Scattering