کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8193981 | 1528889 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
System size dependence of associated yields in hadron-triggered jets
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present results on the system size dependence of high transverse momentum di-hadron correlations at sNN=200GeV as measured by STAR at RHIC. Measurements in d+Au, Cu+Cu and Au+Au collisions reveal similar jet-like near-side correlation yields (correlations at small angular separation - ÎÏâ¼0, Îηâ¼0) for all systems and centralities. Previous measurements have shown that the away-side (ÎÏâ¼Ï) yield is suppressed in heavy-ion collisions. We present measurements of the away-side suppression as a function of transverse momentum and centrality in Cu+Cu and Au+Au collisions. The suppression is found to be similar in Cu+Cu and Au+Au 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 683, Issues 2â3, 18 January 2010, Pages 123-128
Journal: Physics Letters B - Volume 683, Issues 2â3, 18 January 2010, Pages 123-128
نویسندگان
STAR Collaboration STAR Collaboration, B.I. Abelev, M.M. Aggarwal, Z. Ahammed, B.D. Anderson, D. Arkhipkin, G.S. Averichev, J. Balewski, O. Barannikova, L.S. Barnby, J. Baudot, S. Baumgart, D.R. Beavis, R. Bellwied, F. Benedosso, M.J. Betancourt,