Bibliographic Details
| Title: |
The energy dependence of ptangular correlations inferred from mean-ptfluctuation scale dependence in heavy ion collisions at the SPS and RHIC. |
| Authors: |
STAR Collaboration, J Adams, M M Aggarwal, Z Ahammed, J Amonett, B D Anderson, M Anderson, D Arkhipkin, G S Averichev, Y Bai, J Balewski, O Barannikova, L S Barnby, J Baudot, S Bekele, V V Belaga, A Bellingeri, R Bellwied, B I Bezverkhny, S Bhardwaj |
| Source: |
Journal of Physics G: Nuclear & Particle Physics. Mar2007, Vol. 34 Issue 3, p451-465. 15p. |
| Subjects: |
Heavy ion collisions, Collisions (Nuclear physics), Particles (Nuclear physics), Deep inelastic collisions |
| Abstract: |
We present the first study of the energy dependence of ptangular correlations inferred from event-wise mean transverse momentum ?pt? fluctuations in heavy ion collisions. We compare our large-acceptance measurements at CM energies , 62.4, 130 and 200 GeV to SPS measurements at 12.3 and 17.3 GeV. ptangular correlation structure suggests that the principal source of ptcorrelations and fluctuations is minijets (minimum-bias parton fragments). We observe a dramatic increase in correlations and fluctuations from SPS to RHIC energies, increasing linearly with from the onset of observable jet-related ?pt? fluctuations near 10 GeV. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
