2000/11/07 by B. Kämpfer, B. Kampfer, O. P. Pavlenko +1 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1007/s100500170149
published as Eur.Phys.J.A10:101-107,2001 · 11 pages with figs. (style changed to RevTeX)
arxiv created 2000/11/07 · openalex publication_date 2001/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The double differential dilepton spectrum dN/ (dM_⊥2 dM2) at fixed transverse mass M_⊥ allows a direct access to the vector meson spectral functions. Within a fireball model the sensitivity of dN/ (dM_⊥2 dM2) against variations of both the in-medium properties of mesons and the dynamics of the fireball is investigated. In contrast to the integrated invariant-mass spectrum dN/dM2, in the spectrum dN/dM2 dM_⊥2 with fixed M_⊥ the ω signal is clearly seen as bump riding on the ρ background even in case of strong in-medium modifications.