Comparison of the space-time extent of the emission source in <i>d</i> plus Au and Au plus Au collisions at √<SUP>S</SUP>NN=200 GeV
NUCLEAR PHYSICS A, cilt.931, ss.1082-1087, 2014 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 931
- Basım Tarihi: 2014
- Doi Numarası: 10.1016/j.nuclphysa.2014.08.054
- Dergi Adı: NUCLEAR PHYSICS A
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1082-1087
- Yıldız Teknik Üniversitesi Adresli: Hayır
Özet
Two-pion interferometry measurements in d + Au and Au + Au collisions at root(NN)-N-S = 200 GeV are used to extract and compare the Gaussian source radii R-out, R-side and R-long, which characterize the space time extent of the emission sources. The comparisons, which are performed as a function of collision centrality and the mean transverse momentum for pion pairs, indicate strikingly similar patterns for the d + Au and Au + Au systems. They also indicate a linear dependence of Rside on the initial transverse geometric size (R) over bar, as well as a smaller freeze-out size for the d + Au system. These patterns point to the important role of final-state re-scattering effects in the reaction dynamics of d + Au collisions. (C) 2014 Elsevier B.V. All rights reserved.