Naslov
System Size Dependence of Transverse Momentum Correlations at RHIC

Autori
Adamczyk, L. ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Zyzak, M.

Izvornik
Physical Review C (0556-2813) 87 (2013); 64902-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
system size; transverse; correlation; STAR

Sažetak
We present a study of the average transverse momentum (pt) fluctuations and pt correlations for charged particles produced in Cu+Cu collisions at midrapidity for sNN‾‾‾‾√= 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 pt correlation results have been studied as functions of the collision centralities, the ranges in pt, the pseudorapidity η, and the azimuthal angle ϕ. The square root of the measured pt correlations when scaled by mean pt 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
STAR Collaboration.

POVEZANOST RADA