K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.034909· OSTI ID:21596778

Aggarwal, M M; Bhati, A K; Pruthi, N K ^[1]; Ahammed, Z; Dong, X; Grebenyuk, O; Hjort, E; Jacobs, P; Kikola, D P; Kiryluk, J; Klein, S R; Masui, H; Matis, H S; Odyniec, G; Olson, D; Ploskon, M A; Poskanzer, A M; Powell, C B; Ritter, H G; Rose, A ^[2]

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1. Panjab University, Chandigarh 160014 (India)
2. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

We report on K*{sup 0} production at midrapidity in Au + Au and Cu + Cu collisions at {radical}(s{sub NN})=62.4 and 200 GeV collected by the Solenoid Tracker at the Relativistic Heavy Ion Collider detector. The K*{sup 0} is reconstructed via the hadronic decays K*{sup 0}{yields}K{sup +}{pi}{sup -} and K*{sup 0}{yields}K{sup -}{pi}{sup +}. Transverse momentum, p{sub T}, spectra are measured over a range of p{sub T} 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, <p{sub T}>, are presented. The measured N(K*{sup 0})/N(K) and N({phi})/N(K*{sup 0}) ratios favor the dominance of rescattering of decay daughters of K*{sup 0} over the hadronic regeneration for the K*{sup 0} production. In the intermediate p{sub T} region (2.0<p{sub T}<4.0 GeV/c), the elliptic flow parameter, v{sub 2}, and the nuclear modification factor, R{sub CP}, agree with the expectations from the quark coalescence model of particle production.

• OSTI ID: 21596778
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 3; Other Information: DOI: 10.1103/PhysRevC.84.034909; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
BROOKHAVEN RHIC
CENTER-OF-MASS SYSTEM
COLLISIONS
COPPER
GEV RANGE
GOLD
HADRONIC PARTICLE DECAY
KAONS MINUS
KAONS PLUS
PARTICLE PRODUCTION
PARTICLE RAPIDITY
QUARKS
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TRANSVERSE MOMENTUM
ACCELERATORS
ATOM COLLISIONS
BOSONS
DECAY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
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HEAVY ION ACCELERATORS
KAONS
LINEAR MOMENTUM
MESONS
METALS
PARTICLE DECAY
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
SCATTERING
STORAGE RINGS
STRANGE MESONS
STRANGE PARTICLES
TRANSITION ELEMENTS