#1
#1 out of 1
1d ago
Observation of deuteron and antideuteron formation from resonance-decay nucleons - Nature
- ALICE analyzes π±–d correlations in pp collisions to study deuteron formation mechanisms.
- Researchers find that deuteron formation proceeds after Δ resonance decays rather than direct emission.
- Approximately 88.9% of (anti)deuterons originate from resonance binding, per the analysis.
- A true fraction around 69% is estimated after correcting for pion efficiency and acceptance.
- Δ resonance shapes are extracted from π–p correlations to model π–d spectra.
- The study uses the CATS framework to model interactions in the π–d system.
- Measured Δ peak shifts to lower mass values due to rescattering effects.
- EPOS 3 and ThermalFIST are used to compare resonance production with data.
- The analysis covers high-multiplicity pp collisions at 13 TeV, focusing on Δ contributions to deuteron yields.
- The researchers quantify the resonance fraction and discuss implications for cosmic ray modelling.
Vote 0