K[superscript *0] production in Cu + Cu and Au + Au collisions at √s[subscript NN]=62.4 GeV and 200 GeV
Author(s)
Balewski, Jan T.; Betancourt, Michael Joseph; Corliss, Ross Cameron; Hays-Wehle, James Prewitt; Jones, Christopher LaDon; Kocoloski, Adam Philip; Leight, William Axel; Sakuma, Tai; Seele, Joseph Patrick; Surrow, Bernd; Hoffman, Alan Michael; Milner, Richard G; Redwine, Robert P; van Nieuwenhuizen, Gerrit J; Walker, Matthew H; ... Show more Show less
DownloadAgarwal-2011-K∗0 production in Cu + Cu and.pdf (1.242Mb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Terms of use
Metadata
Show full item recordAbstract
We report on K[superscript *0] production at midrapidity in Au + Au and Cu + Cu collisions at √s[subscript NN]=62.4 and 200 GeV collected by the Solenoid Tracker at the Relativistic Heavy Ion Collider detector. The K[superscript *0] is reconstructed via the hadronic decays K[superscript *0]→K+π− and K[superscript *0̅] →K[superscript −]π[superscript +]. Transverse momentum, pT, spectra are measured over a range of pT extending from 0.2 GeV/c up to 5 GeV/c. The center-of-mass energy and system size dependence of the rapidity density, dN/dy, and the average transverse momentum, 〈pT〉, are presented. The measured N(K[superscript *0])/N(K) and N(φ)/N(K[superscript *0]) ratios favor the dominance of rescattering of decay daughters of K*0 over the hadronic regeneration for the K[superscript *0] production. In the intermediate pT region (2.0<pT<4.0 GeV/c), the elliptic flow parameter, v[subscript 2], and the nuclear modification factor, RCP, agree with the expectations from the quark coalescence model of particle production.
Date issued
2011-09Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review C
Publisher
American Physical Society
Citation
Aggarwal, M. M. et al. "K*0 production in Cu + Cu and Au + Au collisions at √sNN=62.4 GeV and 200 GeV." Physical Review C 84, 034909 (2011). ©2011 American Physical Society
Version: Final published version
ISSN
0556-2813
1089-490X