Resonance production at SPS energies: CERES and NA49
We present results on resonance production by the NA49 and CERES collaborations. The measurement of the differential yields and spectral distributions of the K*(892), Δ(1232), ρ, ϕ and Λ(1520) resonances from their leptonic and hadronic decay channels at different C.M.S. energies and for various col...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2012-11-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20123600005 |
| _version_ | 1818871599612297216 |
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| author | Busch O. |
| author_facet | Busch O. |
| author_sort | Busch O. |
| collection | DOAJ |
| description | We present results on resonance production by the NA49 and CERES collaborations. The measurement of the differential yields and spectral distributions of the K*(892), Δ(1232), ρ, ϕ and Λ(1520) resonances from their leptonic and hadronic decay channels at different C.M.S. energies and for various colliding systems allows us to study in-medium modifications of the resonance mass, width and yield and constrains the properties of the hadronic phase. For K*(892)0, a strong system size dependence of the yield relative to kaon production is found. The production of the Δ(1232) resonance is consistent with thermal model expectations. ϕ meson spectra and yields reconstructed in the leptonic and hadronic decay channels are in agreement. Low-mass dilepton spectra indicate significant regeneration of the ρ meson and a strong modification of the ρ spectral function. |
| first_indexed | 2024-12-19T12:25:29Z |
| format | Article |
| id | doaj.art-5763fdcb24e44648b4aed95161042fe3 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T12:25:29Z |
| publishDate | 2012-11-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-5763fdcb24e44648b4aed95161042fe32022-12-21T20:21:34ZengEDP SciencesEPJ Web of Conferences2100-014X2012-11-01360000510.1051/epjconf/20123600005Resonance production at SPS energies: CERES and NA49Busch O.We present results on resonance production by the NA49 and CERES collaborations. The measurement of the differential yields and spectral distributions of the K*(892), Δ(1232), ρ, ϕ and Λ(1520) resonances from their leptonic and hadronic decay channels at different C.M.S. energies and for various colliding systems allows us to study in-medium modifications of the resonance mass, width and yield and constrains the properties of the hadronic phase. For K*(892)0, a strong system size dependence of the yield relative to kaon production is found. The production of the Δ(1232) resonance is consistent with thermal model expectations. ϕ meson spectra and yields reconstructed in the leptonic and hadronic decay channels are in agreement. Low-mass dilepton spectra indicate significant regeneration of the ρ meson and a strong modification of the ρ spectral function.http://dx.doi.org/10.1051/epjconf/20123600005 |
| spellingShingle | Busch O. Resonance production at SPS energies: CERES and NA49 EPJ Web of Conferences |
| title | Resonance production at SPS energies: CERES and NA49 |
| title_full | Resonance production at SPS energies: CERES and NA49 |
| title_fullStr | Resonance production at SPS energies: CERES and NA49 |
| title_full_unstemmed | Resonance production at SPS energies: CERES and NA49 |
| title_short | Resonance production at SPS energies: CERES and NA49 |
| title_sort | resonance production at sps energies ceres and na49 |
| url | http://dx.doi.org/10.1051/epjconf/20123600005 |
| work_keys_str_mv | AT buscho resonanceproductionatspsenergiesceresandna49 |