Spectra of identified high-pT pi± and p(p[over-bar]) in Cu+Cu collisions at [sqrt]sNN=200 GeV
Author(s)Balewski, Jan T.; Surrow, Bernd; Betancourt, Michael Joseph; Corliss, Ross Cameron; Hays-Wehle, James Prewitt; Hoffman, A. M.; Jones, Christopher LaDon; Kocoloski, Adam Philip; Leight, William Axel; Milner, Richard G.; Redwine, Robert P.; Sakuma, Tai; Seele, Joseph Patrick; van Nieuwenhuizen, Gerrit Jan; Walker, Matthew H.; ... Show more Show less
Spectra of identified high-pT π± and p(p¯) in Cu+Cu collisions at √sNN=200 GeV
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We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3<pT<10 GeV/c) from Cu+Cu collisions at [sqrt]sNN=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-pT and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow for a detailed exploration of the onset of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Physical Review C
American Physical Society
STAR Collaboration et al. “Spectra of identified high-pT pi[superscript ±] and p(p-bar) in Cu+Cu collisions at [sqrt]sNN=200 GeV.” Physical Review C 81.5 (2010): 054907. © 2010 American Physical Society.
Final published version