New Ceres Results
A. Marin (for the CERES Collaboration)
TL;DR
The CERES experiment's upgraded TPC collected data from Pb+Au collisions at 40 AGeV, revealing di-electron spectrum enhancements and providing new insights into medium modifications and hadronic observables.
Contribution
This study presents new di-electron spectra at 40 AGeV with an upgraded TPC, enabling detailed analysis of medium effects and hadronic yields in heavy-ion collisions.
Findings
Observed di-electron enhancement similar to higher energies
Compared results with models including medium modifications
Analyzed Lambda yields and AntiLambda/Lambda ratios
Abstract
During 1999 the CERES experiment upgraded by the new TPC was taking data from semicentral Pb+Au collisions at 40 AGeV. The analysis of the di-electron spectra shows an enhancement in the low mass region of at least the same magnitude as previously observed at full SPS energy. The results are compared to model calculations with and without medium modifications of the vector mesons. The addition of the radial TPC gives more possibilities to study hadronic observables. The results obtained for the midrapidity Lambda yield and the AntiLambda/Lambda ratio are compared to the existing systematics
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Taxonomy
TopicsAstro and Planetary Science · Gamma-ray bursts and supernovae