Resonance production at SPS energies

• Verfasst von: Busch, Oliver [VerfasserIn]
• Titel: Resonance production at SPS energies
• Titelzusatz: CERES and NA49
• Verf.angabe: O. Busch for the CERES collaboration
• E-Jahr: 2012
• Jahr: 29 November 2012
• Umfang: 8 S.
• Fussnoten: Gesehen am 05.06.2018
• Titel Quelle: Enthalten in: Resonance Workshop at UT Austin
• Ort Quelle: Red Hook, NY : Curran, 2012
• Jahr Quelle: 2012
• Band/Heft Quelle: (2012) Artikel-Nummer 00005, 8 Seiten
• DOI: doi:10.1051/epjconf/20123600005
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1576020444

Abstract

We present results on resonance production by the NA49 and CERES collaborations. The measurement of the differential yields and spectral distributions of the <i>K<i/>*(892), <i>Δ<i/>(1232), <i>ρ<i/>, <i>ϕ<i/> and <i>Λ<i/>(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 <i>K<i/>*(892)<sup>0<sup/>, a strong system size dependence of the yield relative to kaon production is found. The production of the <i>Δ<i/>(1232) resonance is consistent with thermal model expectations. <i>ϕ<i/> meson spectra and yields reconstructed in the leptonic and hadronic decay channels are in agreement. Low-mass dilepton spectra indicate significant regeneration of the <i>ρ<i/> meson and a strong modification of the <i>ρ<i/> spectral function.