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

Journal Article · Tue Sep 20 00:00:00 EDT 2011 · Physical Review, C (Nuclear Physics)

OSTI ID:1043982

M, Aggarwal M; Dunlop, J

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 {ovr 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.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1043982
• Report Number(s): BNL-96601-2011-JA; PRVCAN; R&D Project: PO-003; KB0202012; TRN: US1203303
• Journal Information: Physical Review, C (Nuclear Physics), Vol. 84, Issue 3; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
COALESCENCE
DECAY
HEAVY IONS
MODIFICATIONS
PARTICLE PRODUCTION
PARTICLE RAPIDITY
PRODUCTION
QUARKS
REGENERATION
RESCATTERING
SOLENOIDS
SPECTRA
TRANSVERSE MOMENTUM
relativistic heavy ion collider