Disentanglement of hard and soft QCD processes using two-particle correlation functions Article Swipe
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· 2023
· Open Access
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· DOI: https://doi.org/10.1088/1742-6596/2586/1/012009
Transverse spherocity ( S 0 ) has evolved as a powerful method to distinguish between soft and hard contributions in an event in small collision systems. We used the two-particle differential-number correlation functions ( R 2 ) and transverse momentum correlation functions ( P 2 ) of charged particles produced in pp collisions at TeV with the PYTHIA8 model to explore this phenomena. The Δ φ projections of these correlation functions in different multiplicity and S 0 classes are discussed. We find that these correlation functions show different shapes and sizes in both near- and away-side with multiplicity and S 0 classes. We observe a strong correlation in the near- and away-side of these correlation functions for jetty-like (hard QCD processes), which become weaker for isotropic (soft QCD processes) in spherocity classes as compared to multiplicity classes. Finally, it is observed that S 0 should be a good observable as compared to multiplicity to disentangle hard and soft QCD processes in a small collision system.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1088/1742-6596/2586/1/012009
- OA Status
- diamond
- References
- 4
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4387013101