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 04:00:00 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, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 84; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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