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

ID: 544635.0, MPI für Physik / MPI für Physik
Azimuthal di-hadron correlations in d+Au and Au+Au collisions at \sqrt{s_{NN}}=200 GeV measured at the STAR detector
Authors:
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Physical Review C
Journal Abbrev.:Phys.Rev.C
Issue / Number:82
Start Page:024912
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Yields, correlation shapes, and mean transverse momenta \pt{} of charged particles associated with intermediate to high-\pt{} trigger particles ($2.5 < \pt < 10$ \GeVc) in d+Au and Au+Au collisions at $\snn=200$ GeV are presented. For associated particles at higher $\pt \gtrsim 2.5$ \GeVc, narrow correlation peaks are seen in d+Au and Au+Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle $\pt < 2$ \GeVc, a large enhancement of the near- ($\dphi \sim 0$) and away-side ($\dphi \sim \pi$) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au+Au collisions compared to d+Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at $\dphi \sim \pi$ in central Au+Au collisions.
Classification / Thesaurus:STAR
Comment of the Author/Creator:16 pages, 11 figures, updated after journal review
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:
Identifiers:
 Full Text: You have privileges to view the following file(s): arxiv:1004.2377.pdf  [716,00 Kb] [Comment:file from upload service]
 The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.