Projections for charm balance functions in heavy-ion collisions

Detta är en Kandidat-uppsats från Lunds universitet/Partikelfysik; Lunds universitet/Fysiska institutionen

Sammanfattning: In this thesis, pp collisions were simulated using PYTHIA. D+ D- and D0 D0bar balance functions were created in order to contribute with a reference point for future balance functions measured in real data from Pb-Pb collisions. Charm balance functions are important since the charm quark can act as a probe of the QGP, probing the first instances after a collision. The balance functions were created under varying conditions: (i) minimum bias with only events with 2 charms, (ii) forcing charm production and (iii) forcing charm production with only events with 4 charms. The results were mainly in line with expectations. The main deviation from expectations was that no away-side peak was found in minimum bias collisions, indicating that the distributions are dominated by NLO processes. This was not in line with real data from pp collisions from LHCb.

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