Published 2002
| Version v1
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Pion broadening and low-mass dilepton production
Creators
- 1. Sezione INFN, Dipartimento di Fisica, Universita di Catania, Catania (Italy)
- 2. Fachbereich Physik, Universitaet Rostock, Rostock (Germany)
Description
Mass and transverse momentum spectra of dileptons produced in Pb + Au (158 GeV/u) collisions within a pion annihilation model are determined. A fit to the data requires simultaneous mass reduction and broadening of the in-medium rho propagator. The introduction of a finite pion width, as required within self-consistent approaches to the interacting pion gas, further improves the agreement with the data
Availability note (English)
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Additional details
Publishing Information
- Imprint Pagination
- 15 p.
- Report number
- JINR-E--2-2002-225
INIS
- Country of Publication
- Joint Institute for Nuclear Research (JINR)
- Country of Input or Organization
- Joint Institute for Nuclear Research (JINR)
- INIS RN
- 34060954
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANNIHILATION; ELECTRON PAIRS; FORM FACTORS; GEV RANGE 100-1000; GOLD 197 TARGET; LEAD 208 REACTIONS; LEPTON NUMBER; MASS SPECTRA; PAIR PRODUCTION; PHASE SPACE; PIONS; TRANSVERSE MOMENTUM
- Descriptors DEC
- BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; HEAVY ION REACTIONS; INTERACTIONS; LINEAR MOMENTUM; MATHEMATICAL SPACE; MESONS; NUCLEAR REACTIONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; SPACE; SPECTRA; TARGETS
Optional Information
- Notes
- 20 refs., 5 figs. Submitted to the journal, Physical Review. C, Nuclear Physics