Poincare covariant particle dynamics. II. Fragmentation for ultrarelativistic reactions

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.3266· OSTI ID:7050045

Behrens, D; Peter, G; Noack, C C ^[1]

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1. Institut fuer Theoretische Physik, Universitaet Bremen, D-28334 Bremen (Germany)

We present a Poincare covariant model for ultrarelativistic particle reactions without any field degrees of freedom. A relativistic two-particle interaction is made possible by an enlargement of phase space and a distinction between physical and canonical particle coordinates. A Hamiltonian formalism with a mass-like quasipotential defines the dynamics of the system. Then interaction at a distance causes a change of effective particle masses instead of energy. Particle production is incorporated by a phenomenological decay procedure for the constituents (partons) in a manner analogous to a string fragmentation mechanism. This pure particle picture for Poincare covariant collision dynamics (PCD model) is compared to other microscopic models and tested by simulations of [ital e][sup +][ital e][sup [minus]] jet events. Before application to more complex scenarios like ultrarelativistic heavy ion collisions, hard gluonic effects should be included. In the PCD model, this can be done by introduction of massive gluons as particles.

• OSTI ID: 7050045
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 49:6; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
HEAVY ION REACTIONS
FRAGMENTATION
POINCARE GROUPS
DEGREES OF FREEDOM
ELECTRON-POSITRON INTERACTIONS
HAMILTONIANS
PARTICLE PRODUCTION
PHASE SPACE
RELATIVISTIC RANGE
CHARGED-PARTICLE REACTIONS
ENERGY RANGE
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LIE GROUPS
MATHEMATICAL OPERATORS
MATHEMATICAL SPACE
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
QUANTUM OPERATORS
SPACE
SYMMETRY GROUPS
663450* - Heavy-Ion-Induced Reactions & Scattering- (1992-)
661100 - Classical & Quantum Mechanics- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)
662310 - Weak & Electromagnetic Interactions of Leptons- (1992-)