Back to Search
Start Over
Implication of two-baryon azimuthal correlations in pp collisions at LHC energies on the QGP.
- Source :
-
Physics Letters B . Jun2022, Vol. 829, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- The near-side depression in two-proton or two-antiproton azimuthal correlations in pp collisions at s = 7 TeV has been observed experimentally and then qualitatively reproduced in our earlier studies with a multi-phase transport model. In this study, we further investigate the origin of the depression feature in two-baryon correlations in small collision systems. We find that the initial parton-level spatial correlation, a finite expansion in the parton stage, and quark coalescence are important ingredients leading to the near-side depression. In particular, we find that a finite expansion of the parton system leads to a finite space-momentum correlation at hadronization, which then converts the near-side depression in the coordinate space to that in the momentum space. These results suggest that a partonic matter with a finite lifetime is formed in the pp collisions. Further studies are needed to determine whether the partonic matter is near local equilibrium and can thus be called a QGP or far away from local equilibrium. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MOMENTUM space
*PARTONS
*FINITE, The
*QUARKS
Subjects
Details
- Language :
- English
- ISSN :
- 03702693
- Volume :
- 829
- Database :
- Academic Search Index
- Journal :
- Physics Letters B
- Publication Type :
- Academic Journal
- Accession number :
- 156843796
- Full Text :
- https://doi.org/10.1016/j.physletb.2022.137063