Impact of initial fluctuations and nuclear deformations in isobar collisions |
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| Affiliation: | 1.Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China;School of Science,Huzhou University,Huzhou 313000,China;2.School of Science,Huzhou University,Huzhou 313000,China;Strong-Coupling Physics International Research Laboratory(SPiRL),Huzhou University,Huzhou 313000,China;3.School of Science,Huzhou University,Huzhou 313000,China;Strong-Coupling Physics International Research Laboratory(SPiRL),Huzhou University,Huzhou 313000,China;Department of Physics and Astronomy,Purdue University,West Lafayette,IN 47907,USA |
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| Abstract: | Relativistic isobar(9644Ru+9644Ru and 9640Zr+9640Zr)collisions have revealed intricate differences in their nuclear size and shape,inspiring unconventional studies of nuclear structure using relativistic heavy ion collisions.In this study,we investigate the relative differences in the mean multiplicity(R)and the second-(Rε2)and third-order eccentricity(Rε3)between isobar collisions using initial state Glauber models.It is found that initial fluctuations and nuclear deformations have negligible effects on Rin most central collisions,while both are important for the Rε2and Rε3,the degree of which is sensitive to the underlying nucleonic or sub-nucleonic degree of freedom.These features,compared to real data,may probe the particle production mechanism and the physics underlying nuclear structure. |
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| Keywords: | Relativistic isobar collisions Initial fluctuations Nuclear deformation |
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