CERN Accelerating science

The ratio $\eta/\pi^0$ as a function of \pt, measured in pp and p--A collisions at different center-of-mass energies~\cite{CERES_eta,ALICE_etaPP,ALICE_etaPP8,ALICE_etaPA}. Also shown is the parametrization used for the construction of the hadronic cocktail (solid line), its uncertainty (dotted line), and the expectation from $m_{\rm{T}}$-scaling (dashed line).

The ratio $\eta/\pi^0$ as a function of \pt, measured in pp and p--A collisions at different center-of-mass energies~\cite{CERES_eta,ALICE_etaPP,ALICE_etaPP8,ALICE_etaPA}. Also shown is the parametrization used for the construction of the hadronic cocktail (solid line), its uncertainty (dotted line), and the expectation from $m_{\rm{T}}$-scaling (dashed line).

Differential dielectron cross sections as a function of \mee (left) and \pTee (right). The different components of the hadronic cocktail are shown as solid lines. The error bars and boxes indicate the statistical and systematic uncertainties of the data points. The cocktail uncertainties are shown as gray bands. In the bottom panels, the ratios of data and cocktail are shown.

Differential dielectron cross sections as a function of \mee (left) and \pTee (right). The different components of the hadronic cocktail are shown as solid lines. The error bars and boxes indicate the statistical and systematic uncertainties of the data points. The cocktail uncertainties are shown as gray bands. In the bottom panels, the ratios of data and cocktail are shown.

Differential dielectron cross sections as a function of \mee (left) and \pTee (right). The different components of the hadronic cocktail are shown as solid lines. The error bars and boxes indicate the statistical and systematic uncertainties of the data points. The cocktail uncertainties are shown as gray bands. In the bottom panels, the ratios of data and cocktail are shown.

Differential dielectron cross sections as a function of \mee (left) and \pTee (right). The different components of the hadronic cocktail are shown as solid lines. The error bars and boxes indicate the statistical and systematic uncertainties of the data points. The cocktail uncertainties are shown as gray bands. In the bottom panels, the ratios of data and cocktail are shown.

Differential dielectron cross sections as a function of \mee (left) and \pTee (right). The different components of the hadronic cocktail are shown as solid lines. The error bars and boxes indicate the statistical and systematic uncertainties of the data points. The cocktail uncertainties are shown as gray bands. In the bottom panels, the ratios of data and cocktail are shown.

Differential dielectron cross sections as a function of \mee (left) and \pTee (right). The different components of the hadronic cocktail are shown as solid lines. The error bars and boxes indicate the statistical and systematic uncertainties of the data points. The cocktail uncertainties are shown as gray bands. In the bottom panels, the ratios of data and cocktail are shown.

Upper panel: Dielectron yield per event in the excess region as a function of the event multiplicity compared with the hadronic cocktail. Lower panel: Enhancement factor data/cocktail in three different kinematic regions. Error bars and boxes show the statistical and systematic uncertainties of the data points. The cocktail uncertainties are indicated as vertical bars around 1 in the lower panel.

Upper panel: Dielectron yield per event in the excess region as a function of the event multiplicity compared with the hadronic cocktail. Lower panel: Enhancement factor data/cocktail in three different kinematic regions. Error bars and boxes show the statistical and systematic uncertainties of the data points. The cocktail uncertainties are indicated as vertical bars around 1 in the lower panel.

Upper panel: Dielectron yield per event in the excess region as a function of the event multiplicity compared with the hadronic cocktail. Lower panel: Enhancement factor data/cocktail in three different kinematic regions. Error bars and boxes show the statistical and systematic uncertainties of the data points. The cocktail uncertainties are indicated as vertical bars around 1 in the lower panel.

Dielectron excess spectra as a function of \mee (left) and \pTee(right) after subtraction of the hadronic decay cocktail. The error bars and boxes represent statistical and combined systematic uncertainties from data and cocktail. Arrows indicate upper limits at 90\% confidence level. Also shown as lines are calculations of bremsstrahlung from initial- and final-state hadrons~\cite{Brems_Dielectron}, and thermal dielectron production~\cite{Rapp1,Rapp2,Rapp3}.

Dielectron excess spectra as a function of \mee (left) and \pTee(right) after subtraction of the hadronic decay cocktail. The error bars and boxes represent statistical and combined systematic uncertainties from data and cocktail. Arrows indicate upper limits at 90\% confidence level. Also shown as lines are calculations of bremsstrahlung from initial- and final-state hadrons~\cite{Brems_Dielectron}, and thermal dielectron production~\cite{Rapp1,Rapp2,Rapp3}.

Dielectron excess spectra as a function of \mee (left) and \pTee(right) after subtraction of the hadronic decay cocktail. The error bars and boxes represent statistical and combined systematic uncertainties from data and cocktail. Arrows indicate upper limits at 90\% confidence level. Also shown as lines are calculations of bremsstrahlung from initial- and final-state hadrons~\cite{Brems_Dielectron}, and thermal dielectron production~\cite{Rapp1,Rapp2,Rapp3}.