skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=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 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]; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [2]
  1. Panjab University, Chandigarh 160014 (India)
  2. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
21596778
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034909; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
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; RESCATTERING; TRANSVERSE MOMENTUM; ACCELERATORS; ATOM COLLISIONS; BOSONS; DECAY; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FERMIONS; HADRONS; HEAVY ION ACCELERATORS; KAONS; LINEAR MOMENTUM; MESONS; METALS; PARTICLE DECAY; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; SCATTERING; STORAGE RINGS; STRANGE MESONS; STRANGE PARTICLES; TRANSITION ELEMENTS

Citation Formats

Aggarwal, M M, Bhati, A K, Pruthi, N K, 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, and Rose, A. K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034909.
Aggarwal, M M, Bhati, A K, Pruthi, N K, 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. K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV. United States. https://doi.org/10.1103/PHYSREVC.84.034909
Aggarwal, M M, Bhati, A K, Pruthi, N K, 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, and Rose, A. 2011. "K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV". United States. https://doi.org/10.1103/PHYSREVC.84.034909.
@article{osti_21596778,
title = {K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV},
author = {Aggarwal, M M and Bhati, A K and Pruthi, N K and Ahammed, Z and Dong, X and Grebenyuk, O and Hjort, E and Jacobs, P and Kikola, D P and Kiryluk, J and Klein, S R and Masui, H and Matis, H S and Odyniec, G and Olson, D and Ploskon, M A and Poskanzer, A M and Powell, C B and Ritter, H G and Rose, A},
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 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 = {10.1103/PHYSREVC.84.034909},
url = {https://www.osti.gov/biblio/21596778}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}