K*0 production in Cu + Cu and Au + Au collisions at √sNN√=62.4 GeV and 200 GeV

Scientific paper - Original scientific paper

• Author: M. M. Aggarwal
• Author: ...
• Author: Mirko Planinić
• Author: ...
• Author: Nikola Poljak
• Author: ...
• Author: Y. Zoulkarneeva
• Collaboration: STAR Collaboration
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

We report on K*0 production at midrapidity in Au + Au and Cu + Cu collisions at √sNN=62.4 and 200 GeV collected by the Solenoid Tracker at the Relativistic Heavy Ion Collider detector. The K*0 is reconstructed via the hadronic decays K*0→K+π− and K*0̅ →K−π+. 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*0)/N(K) and N(φ)/N(K*0) ratios favor the dominance of rescattering of decay daughters of K*0 over the hadronic regeneration for the K*0 production. In the intermediate pT region (2.0 <pT<4.0 GeV/c), the elliptic flow parameter, v2, and the nuclear modification factor, RCP, agree with the expectations from the quark coalescence model of particle production.

• Keywords (english): STAR; 200GeV; K
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review C - Nuclear Physics
• Numbering: vol. 84, no. 3, 034909
• p-ISSN: 0556-2813
• e-ISSN: 1089-490X
• DOI: https://doi.org/10.1103/PhysRevC.84.034909
• URN:NBN: urn:nbn:hr:217:306211
• Publication: 2011
• Project: Number: 119-0982887-1006; Title (croatian): Istraživanje hadronskih sustava upotrebom relativističkih projektila; Leader: Mirko Planinić; Jurisdiction: Croatia; Funding stream: ZP
• Document URL: http://link.aps.org/doi/10.1103/PhysRevC.84.034909
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (2011) by the American Physical Society. Received 11 June 2010; revised manuscript received 13 January 2011; published 20 September 2011.
• Created on: 2019-11-15 16:04:21