Bibliographic Details
| Title: |
System size dependence of associated yields in hadron-triggered jets |
| Authors: |
Abelev, B.I.1, Aggarwal, M.M.2, Ahammed, Z.3, Anderson, B.D.4, Arkhipkin, D.5, Averichev, G.S.6, Balewski, J.7, Barannikova, O.1, Barnby, L.S.8, Baudot, J.9, Baumgart, S.10, Beavis, D.R.11, Bellwied, R.12, Benedosso, F.13, Betancourt, M.J.7, Betts, R.R.1, Bhasin, A.14, Bhati, A.K.2, Bichsel, H.15, Bielcik, J.16 |
| Source: |
Physics Letters B. Jan2010, Vol. 683 Issue 2/3, p123-128. 6p. |
| Subject Terms: |
*JETS (Nuclear physics), *PARTICLE range (Nuclear physics), *HEAVY ion collisions, *RELATIVITY (Physics), *NUCLEAR fragmentation, *ANGULAR momentum (Nuclear physics), *ANGULAR correlations (Nuclear physics), *CONSTRAINTS (Physics) |
| Abstract: |
Abstract: We present results on the system size dependence of high transverse momentum di-hadron correlations at as measured by STAR at RHIC. Measurements in , and collisions reveal similar jet-like near-side correlation yields (correlations at small angular separation –, ) for all systems and centralities. Previous measurements have shown that the away-side () yield is suppressed in heavy-ion collisions. We present measurements of the away-side suppression as a function of transverse momentum and centrality in and collisions. The suppression is found to be similar in and collisions at a similar number of participants. The results are compared to theoretical calculations based on the parton quenching model and the modified fragmentation model. The observed differences between data and theory indicate that the correlated yields presented here will further constrain dynamic energy loss models and provide information about the dynamic density profile in heavy-ion collisions. [Copyright &y& Elsevier] |
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| Database: |
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