Speaker
Description
Electron-positron pairs are a unique experimental tool to investigate the hot and dense medium created in ultra-relativistic heavy-ion collisions. Such pairs are produced during all stages of the collision and do not interact strongly. Therefore, they carry information about the medium properties and the whole space-time evolution of the system.
Measurements of dielectron production in minimum-bias proton-proton collisions provide an important vacuum reference for any modifications observed in heavy-ion collisions. Moreover, the measurement of e$^{+}$e$^{-}$ pairs from semi-leptonic decays of correlated heavy-flavour hadrons in the intermediate-mass region (1.2 < mee < 2.9 GeV/$c^{2}$) allow further studies and understandings of the primordial heavy-flavour production. Finally, recent studies of proton-proton collisions with high charged-particle multiplicities showed interesting results similar to the observations previously done in heavy-ion collisions. Measurements of low-mass dielectrons could provide further insight into the underlying physics processes.
In this poster we present the latest results of the dielectron analysis with ALICE in pp collisions at $ \sqrt{s}=13 $ TeV. A particular focus of the discussion is put on the modification of dielectron spectrum in pp collisions collected with a trigger on high charged-particle multiplicities compared to the minimum-bias events.
| Content type | Experiment |
|---|---|
| Collaboration | ALICE |
| Centralised submission by Collaboration | Presenter name already specified |
