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 Institute: MPI für Physik     Collection: MPI für Physik     Display Documents

ID: 544662.0, MPI für Physik / MPI für Physik
Spectra of identified high-p_{T} pi^{\pm} and p(\bar{p} in Cu+Cu collisions at \sqrt{s_{NN}}=200 GeV
Authors:
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Physical Review C
Journal Abbrev.:Phys.Rev.C
Issue / Number:81
Start Page:054907
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3<$p_{T}$<10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=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-$p_{T}$ 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 the detailed exploration for the on-set 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.
Classification / Thesaurus:STAR
Comment of the Author/Creator:Submitted to Phys. Rev. C, 9 pages, 5 figures
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:
Identifiers:
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