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- W2952636824 abstract "We report on dilepton measurements for central Pb on Au collisions at the top CERN SPS energy with the upgraded CERES experiment. The dilepton mass spectrum of 2000 data with improved mass resolution shows an enhancement over the expectation from hadron decays that is well described by a model including a strong broadening of the $rho$ spectral function. The measured excess yield excludes the dropping mass scenario. We also report on the $phi$ meson measured simultaneously both in the $K^+K^-$ and in the dilepton decay channel for the first time in high energy heavy-ion collisions. An excellent agreement is found between the rapidity densities and the shape of the measured tranverse momentum spectrum. The data rule out a possible enhancement of the $phi$ yield in the leptonic over hadronic channel by a factor larger than 1.6 at 95% CL. CERES results are in agreement with NA49 results." @default.
- W2952636824 created "2019-06-27" @default.
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- W2952636824 date "2008-02-19" @default.
- W2952636824 modified "2023-10-18" @default.
- W2952636824 title "Dilepton measurements with CERES" @default.
- W2952636824 hasPublicationYear "2008" @default.
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