Generalization of the Breit-Wigner formula to nonzero temperature and density

Journal Article · Mon Nov 15 04:00:00 EST 1993 · Annals of Physics (New York); (United States)

DOI:https://doi.org/10.1006/aphy.1993.1087· OSTI ID:5121221

Weldon, H A ^[1]

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1. West Virginia Univ., Morgantown, WV (United States)

A formula is derived for the production rate of unstable particles that are produced in a thermalized region but whose decay products interact so weakly that they escape without thermalizing. The Bose-Einstein or Fermi-Dirac distribution is found to apply to unstable particles but modified by a Breit-Wigner distribution in the invariant mass. 14 refs.

• OSTI ID: 5121221
• Journal Information: Annals of Physics (New York); (United States), Journal Name: Annals of Physics (New York); (United States) Vol. 228:1; ISSN APNYA6; ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

662300 -- Specific Interactions
Decays & Processes-- (1992-)
663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSE-EINSTEIN STATISTICS
BREIT-WIGNER FORMULA
CHARGED-PARTICLE REACTIONS
DECAY
FERMI STATISTICS
HADRONIC PARTICLE DECAY
HEAVY ION REACTIONS
MECHANICS
NUCLEAR REACTIONS
PARTICLE DECAY
SLOWING-DOWN
STATISTICAL MECHANICS
THERMALIZATION