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

Abstract

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.

Authors:
; ;  [1]
  1. (STAR Collaboration)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) Relativistic Heavy Ion Collider
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1043982
Report Number(s):
BNL-96601-2011-JA
Journal ID: ISSN 0556-2813; PRVCAN; R&D Project: PO-003; KB0202012; TRN: US1203303
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Physical Review, C (Nuclear Physics)
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Aggarwal M. M., Dunlop J., and et al. K*0 production in Cu+Cu and Au+Au collisions at sqrt sNN = 62.4 GeV and 200 GeV. United States: N. p., 2011. Web.
Aggarwal M. M., Dunlop J., & et al. K*0 production in Cu+Cu and Au+Au collisions at sqrt sNN = 62.4 GeV and 200 GeV. United States.
Aggarwal M. M., Dunlop J., and et al. Tue . "K*0 production in Cu+Cu and Au+Au collisions at sqrt sNN = 62.4 GeV and 200 GeV". United States.
@article{osti_1043982,
title = {K*0 production in Cu+Cu and Au+Au collisions at sqrt sNN = 62.4 GeV and 200 GeV},
author = {Aggarwal M. M. and Dunlop J. and et al.},
abstractNote = {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.},
doi = {},
journal = {Physical Review, C (Nuclear Physics)},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}