System-size dependence of transverse momentum correlations at √s[subscript NN]=62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider
We present a study of the average transverse momentum (p[subscript t]) fluctuations and p[subscript t] correlations for charged particles produced in Cu+Cu collisions at midrapidity for √s[subscript NN]= 62.4 and 200 GeV. These results are compared with those published for Au+Au collisions at the sa...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/80309 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0002-0816-200X https://orcid.org/0000-0002-9107-6312 |
| Summary: | We present a study of the average transverse momentum (p[subscript t]) fluctuations and p[subscript t] correlations for charged particles produced in Cu+Cu collisions at midrapidity for √s[subscript NN]= 62.4 and 200 GeV. These results are compared with those published for Au+Au collisions at the same energies, to explore the system size dependence. In addition to the collision energy and system size dependence, the p[subscript t] correlation results have been studied as functions of the collision centralities, the ranges in p[subscript t], the pseudorapidity η, and the azimuthal angle ϕ. The square root of the measured p[subscript t] correlations when scaled by mean p[subscript t] is found to be independent of both colliding beam energy and system size studied. Transport-based model calculations are found to have a better quantitative agreement with the measurements compared to models which incorporate only jetlike correlations. |
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